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device operating temperature range package semiconductor technical data dual conversion am receiver ordering information MC13030DW t a = 40 to +85 c soic28 dw suffix plastic package case 751f 28 1 (top view) pin connections order this document by mc13030/d 1 2 3 4 5 6 7 8 9 10 11 12 13 14 28 27 26 25 24 23 22 21 20 19 18 17 16 15 mix1 in mix1 in rf gnd fet rf agc rf agc2 rf agc adj mix1 rf agc adj sd level if gnd sd if out s level out if agc in af out v cc vco out vco vco ref mix1 out mix1 out v ref mix2 in mix2 out mix2 out xtal osc e xtal osc b if in det v ref det in 1 motorola analog ic device data

the mc13030 is a dual conversion am receiver designed for car radio applications. it includes a high dynamic range first mixer, local oscillator, second mixer and second oscillator, and a high gain agc'd if and detector. also included is a signal strength output, two delayed rf agc outputs for a cascode fet/bipolar rf amplifier and diode attenuator, a buffered if output stage and a first local oscillator output buffer for driving a synthesizer. frequency range of the first mixer and oscillator is 100 khz to 50 mhz. applications include single band and multiband car radio receivers, and shortwave receivers. ? operation from 7.5 to 9.0 vdc ? first mixer, 3rd order intercept = 20 dbm ? buffered first oscillator output ? second mixer, 3rd order intercept = +5.0 dbm ? no internal beats between 1st and 2nd oscillator harmonics ? signal strength output ? limited 2nd if output for frequency counter station detector ? adjustable if output station detector level ? adjustable rf agc threshold for both mixer inputs ? two delayed agc outputs for cascode rf stage and diode attenuator representative block diagram this device contains 335 active transistors. 14 13 12 11 10 9 8 7 6 5 4 3 2 1 15 16 17 18 19 20 21 22 23 24 25 26 27 28 v cc vco 5.1 v 6.5 v mix1 mix2 xtal osc 4.1 v 3.0 ma if amp agc 6.6 ma ? motorola, inc. 1996 rev 1
mc13030 2 motorola analog ic device data maximum ratings (t a = 25 c, unless otherwise noted.) rating symbol value unit power supply v cc 10 v operating temperature t a 40 to +85 c storage temperature t stg 65 to +150 c junction temperature t j 150 c note: esd data available upon request. electrical characteristics (t a = 25 c, v cc = 8.0 v, unless otherwise noted.) characteristic condition/pin symbol min typ max unit power supply voltage v cc 7.5 8.0 9.0 v power supply current v cc = 8.0 v i cc 26 32 44 ma detector output level v in = 1.0 mv, 30% mod. v13 160 200 240 mvrms audio s/n ratio v in = 1.0 mv, 30% mod. s/n 48 52 db audio thd v in = 1.0 mv, 30% mod. v 1 0 v 80% m d thd 0.3 03 1.0 10 % v in = 1.0 mv, 80% mod. v 2 0 v 80% m d 0.3 04 1.0 15 v in = 2.0 mv, 80% mod. 0.4 1.5 signal strength output v in = 0 to 2.0 v v11 0 5.2 v vco buffer output v28 178 224 282 mv sd output level v in = 1.0 mv, v11 > v8 v10 2.3 2.7 3.3 vpp mixer1 input resistance 1 or 2 to gnd 10 k w third order intercept point 1 or 2 ip3 127 db m v conversion transconductance 1 or 2 to 24 + 25 g c 2.2 ms total collector current 24 + 25 i c 4.6 ma input if rejection 1 or 2 45 db mixer2 input resistance 22 2.4 k w third order intercept point 22 ip3 112 db m v conversion transconductance 22 to 20 + 21 g c 4.6 ms total collector current 20 + 21 i c 3.0 ma vco minimum oscillator coil parallel impedance 27 to 26 r p 3.0 k w buffer output level 28 v o 224 mvrms stray capacitance 27 c s 7.0 pf if amplifier input resistance 17 r in 2.0 k w transconductance 17 to 15 g m 28 ms maximum input level 17 v in 125 mvrms minimum detector coil parallel impedance 17 to 15 r l 15 k w rf output level 15, v in = 1.0 mv 2.0 vpp audio output impedance 13 r out 120 w audio output level 13 @ 30% mod. v out 200 mvrms
mc13030 3 motorola analog ic device data notes: 1. the transformers used for at the output of the mixers are wideband 1:4 impedance ratio. the secondary load is the 50 w input of the spectrum analyzer, so the impedance across the collectors of the mixer output is 200 w . 2. since the vco frequency is not critical for this measurement, a fixed tuned oscillator tuned to 11.7 mhz is used. this gives an input frequency of 1.0 mhz. 3. the detector coil is loaded with a 10 k resistor to reduce the tuned circuit q and to present a 10 k w load to the if output for determination of if transconductance. 4. the rf agc current, s output current and pin 6 current are measured by connecting a current measuring meter to these pins, so they are effectively shorted to ground. 5. sd adjust is adjusted by connecting a power supply or potentiometer and voltmeter to pin 8. figure 1. test circuit 15 16 17 18 19 20 21 22 23 24 25 26 27 28 vco out vco vco ref mix1 out mix1 out rf v ref mix2 in mix2 out mix2 out xtal osc e xtal osc b if in det v ref det in mix1 in mix1 in rf gnd fet rf agc rf agc2 rf agc adj mix1 rf agc adj sd level if gnd sd if out s level out if agc in af out v cc mixer1 out mixer2 out 8.0 v mixer2 in osc out mixer1 input f o = 1.0 mhz fet rf agc voltage rf agc current pin 6 current sd adjust if signal out s output current audio out if output/ det input if input adj to 11.7 mhz 2.2 m h 82 pf 680 m h 47 m f 8.0 v 10 k 10 k + + 22 0.1 0.1 10.245 47 0.1 1.0 m f + 0.1 0.01 47 47 1:4 1:4 10 k 180 pf 0.1 0.1 r7 0.1 4.7 m f + 14 13 12 11 10 9 8 7 6 5 4 3 2 1 functional description the mc13030 contains all the necessary active circuits for an am car radio or shortwave receiver. the first mixer is a multiplier with emitter resistors in the lower, signal input transistors to give a high dynamic range. it is internally connected to the first oscillator (vco). the input pins are 1 and 2. the input can be to either pins 1 or 2, or balanced. these pins are internally biased, so a dc path between them is allowable but not necessary. the mixer outputs are open collectors on pins 25 and 26. they are normally connected to a tuned transformer. the first oscillator on pin 27 is a negative resistance type with automatic level control. the level is low so the signal does not modulate the tuning diode capacitance and cause distortion. pin 26 is the reference voltage for the oscillator coil. this reference is also the supply for the mixer circuits. the upper bases of the mixer are 0.7 v below this reference. the second mixer is similar to the first, but it is single ended input on pin 22. its outputs are open collectors on pins 20 and 21 which are connected to a tuned transformer. the dynamic range of this mixer is less than the first. it is also connected internally to an oscillator which is normally crystal controlled. the oscillator is a standard colpitts type with the emitter on pin 19 and the base on pin 18. the if amplifier input is pin 17. the agc operates on the input stage to obtain maximum dynamic range and minimum distortion. the if output, pin 15, is a current source.
mc13030 4 motorola analog ic device data therefore, its gain is determined by the load impedance connected between pins 15 and 16. pin 16 is a voltage reference for the output. the output is internally connected to the am detector, and pin 13 is the detector output. this detector also provides the agc signal for the if amplifier. an rc filter from pin 13 to 12 removes the audio, leaving a dc level proportional to the carrier level for agc. pin 11 provides a current proportional to signal strength. it is a current source so a resistor must be connected from pin 11 to ground to select the desired dc voltage range. the current is proportional to the signal level at pin 17, the if amplifier input. a highgain limiting amplifier is used to derive the station detect (sd) signal output on pin 10; this output is present only if it is turned on by the voltage on pin 8. if the voltage on pin 8 is less than the voltage on pin 11, the output on pin 10 is aono. the station detector if output on pin 10 is used with synthesizers which have a frequency counting signal detector. the rf agc outputs on pins 4 and 5 are controlled by the signal levels at mixer1 or mixer2. bypass capacitors are required on pins 6 and 4 to remove audio signals from the agc outputs. pin 4 is designed to control the npn transistor in series with the rf amplifier fet. the voltage on pin 4 is 5.1 v with no input signal and decreases with increasing input signal. pin 5 is designed to control an additional agc circuit at the antenna input. the voltage on pin 5 is at 0 v with no input signal and increases with increasing input signals. the voltage on pin 5 does not increase until the voltage on pin 4 has decreased to about 1.3 v. in most cases, pin 5 is used to drive a diode shunt. maximum output current is about 850 m a. the rf agc sensitivity is about 40 mvrms input to mixer1 or about 2.0 mvrms input to mixer2 at 1.0 mhz. the agc sensitivity for both mixers can be decreased by adding a resistor from pin 6 to ground. there is also an additional amplifier between mixer1 and its agc rectifier. the gain of this amplifier and agc sensitivity for mixer1 can be increased by adding a resistor from pin 7 to ground. therefore, the desired agc sensitivity for both mixers can be achieved by changing the resistors on pins 6 and 7. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 28 27 26 25 24 23 22 21 20 19 18 17 16 15 mix1 in mix1 in rf gnd fet rf agc rf agc2 rf agc adj mix1 rf agc adj sd level if gnd sd if out s level out if agc in af out v cc vco out vco vco ref mix1 out mix1 out v ref mix2 in mix2 out mix2 out xtal osc e xtal osc b if in det v ref det in figure 2. pin connections and dc voltages 5.1 v 5.1 v 5.1 v 7.8 v 7.8 v 6.5 v 3.7 v 7.9 v 7.9 v 4.4 v 5.0 v 4.8 v 4.1 v 4.1 v 3.3 v 3.3 v 0 v 5.1 to 0 v 0 to 850 m a 0 to 2.8 v 200 mv 43 mv 0 to 4.8 v 0 v 6.5 v 0 to 4.8 v 3.6 to 4.5 v 3.6 to 4.5 v 8.0 v s out versus if input: the s output current at pin 11 is provided by two collectors, one a pnp source and the other a sink to ground. the desired s output voltage can be selected using the curve of figure 3 and calculating the value of the required resistor. figure 3. s output current versus if input level if input level (db m v) 30 40 50 100 0 20 40 60 70 pin 11 current ( a) 60 70 80 90 m rf fet agc versus mixer1 and mixer2 input level: figures 4 and 5 are generated with no external resistance on pins 4 or 6, so they represent the minimum rf agc sensitivity of mixer1 and mixer2. figure 4. rf agc voltage versus mixer1 input 85 90 95 100 105 0 1.0 2.0 3.0 4.0 5.0 mixer1 input level (db m v) pin 4 voltage (v) figure 5. rf agc voltage versus mixer2 input mixer2 input level (db m v) 65 70 75 80 0 1.0 2.0 3.0 4.0 5.0 pin 4 voltage (v)
mc13030 5 motorola analog ic device data pin 6 current versus mixer1 and mixer2 input level: the internal resistance from pin 6 to ground is 39 k. the rf agc voltage on pin 4 is 2.0 v when the voltage on pin 6 is 1.2 v. therefore, the desired agc thresholds for either mixer can be set with these curves. the design steps are described in the design notes. figure 6. pin 6 current versus mixer1 input level mixer1 input level (db m v) 90 100 110 120 0 50 100 150 200 250 pin 6 current ( a) m pin 6 current ( a) m figure 7. pin 6 current versus mixer2 input level mixer2 input level (db m v) 80 90 120 0 50 100 150 200 100 110 250 mixer1 agc gain increase versus r7: adding a resistor from pin 7 to ground increases the agc sensitivity of mixer1. the range of increase in db can be found from this curve. this is useful after setting up the agc threshold of mixer2. figure 8. mixer1 agc gain increase versus r7 r7 100 10 k 0 5.0 6.0 7.0 8.0 increase in mixer1 agc sensitivity (db) 1.0 k 1.0 2.0 3.0 4.0 pin 5 current versus pin 4 voltage: all the curves give pin 4 agc voltage versus some other input level. this curve can be used to determine the auxiliary agc current from pin 5 at a given pin 4 voltage. figure 9. pin 5 current versus pin 4 voltage pin 5 current (ma) 0 0.4 0.8 1.2 0 1.0 2.0 3.0 4.0 5.0 pin 4 voltage
mc13030 6 motorola analog ic device data pin function description pin no. internal equivalent circuit description 1, 2 12 10 k 10 k 3.3 v 6.6 ma 150 150 mixer1 input pins 1 and 2 are equivalent. in the application circuit, 2 is grounded with a capacitor and 1 is the input. if a load resistor is needed for the input filter, it can be placed across pins 1 and 2. input impedance for each pin is 10 k. ip3 (third order intercept) at the input is 20 dbm (127 db m ). to guarantee 50 db im3, the input level should not be greater than 3.5 dbm (103 db m ) (150 mvrms). 3 3 rf ground this should be connected to the ground used for the rf circuits. 4 4 5 10 k 5.1 v 4.0 v 3.4 k fet rf agc output this is the agc for the cascode transistor connected to the rf amplifier fet. the nosignal voltage is 5.1 v. the voltage decreases with increasing input signals. a bypass capacitor and electrolytic capacitor must be added to filter out rf signals on the transistor and audio signals in the agc signal. see figures 4 and 5. 5 5 100 22 k v cc 330 rf agc2 output the voltage on this pin starts at 0 and increases with increasing input signals. it is normally used to turn on diodes or a transistor connected across the antenna input and is agc delayed until pin 6 reaches 2.7 v. if the voltage on pin 5 decreases below 2.0 v, the voltage on this pin will decrease from 3.1 down to about 1.5 v. the maximum output current is about 850 m a. 6 6 330 agc 1.0 k 39 k 3.3 k rf agc adjust an electrolytic capacitor of 1.0 m f must be connected to prevent audio modulation of the agc circuits. if there is no resistor on this pin, the rf agc starts at an input level to mixer1 40 mvrms or mixer2 2.0 mvrms. connecting a resistor from pin 6 to ground increases rf levels required for agc to start. it should be used to set the desired agc level of mixer2. if a resistor is not connected to pin 6, unwanted rf signals will cause the agc to start at a very low level, and desired signals may be suppressed. 7 7 500 1.5 k mixer1 rf level adjust a resistor from pin 7 to ground will increase the gain of an amplifier from the input of mixer1 to the agc circuit. it can be used to set the rf agc level of mixer1. the minimum value of r7 is about 680 w . 8 8 510 3.3 k sd s station detector signal level adjust a voltage on pin 8 will set the desired signal strength at which the sd if out on pin 10 appears. the other input to this comparator is the s (signal strength) signal. if pin 8 is grounded, a square wave of the 2nd if (usually 450 of 455 khz) is present with very small input levels. this output could also be used to drive an fm detector if desired. 9 9 if ground pin 9 is the ground for the if section.
mc13030 7 motorola analog ic device data pin function description (continued) pin no. description internal equivalent circuit 10 if 10 10 k sd 510 station detector if output this output is aono when v11 > v8. the output is an amplified and limited 2nd if signal. the signal level is 250 mvpp when it is 100% aono. 11 11 510 1.0 k 1.0 k v cc s level output this is a dc current proportional to if input level. with a load resistor of 75 k, the dc voltage is 0 to 5.1 v. 12 12 1.0 k v cc if agc in the if gain is controlled by the dc voltage on this pin. it is normally connected to pin 13 through an rc network to filter out the audio signal on pin 13. the if gain is maximum when v13 3.6 v. when v13 increases, the if gain decreases. 13 100 13 v cc audio output the dc voltage on pin 13 is 3.6 v with no input signal and increases to 4.5 v at minimum if gain. a nonpolarized electrolytic capacitor may be required to couple to the audio circuits if the audio amplifier dc bias voltage is between these voltages. 14 v cc 14 supply voltage the nominal operating voltage is 8.0 v. 15 510 510 510 15 if amplifier output and detector input the detector coil must be connected between pin 15 and 16. the if amplifier output is a current source, the if amplifier is a transconductance amplifier; the gain is determined by the impedance between pins 15 and 16. the if amplifier g m 0.028 mho. if a wide bandwidth if is desired, the detector coil can be connected between pins 15 and 16 without a tap and then loaded with a resistor across the coil. 16 16 1.0 k 510 detector reference voltage one side of the detector coil is connected to this pin. it should be bypassed with a 0.1 m f capacitor.
mc13030 8 motorola analog ic device data pin function description (continued) pin no. description internal equivalent circuit 17 2.0 k 4.8 v 17 to s d circuit if input the if input impedance is 2.0 k to match most ceramic 455 or 450 khz filters. for a ceramic filter requiring a 1.5 k load, a 5.6 k resistor in series with a 0.01 m f capacitor should be connected from pin 17 to ground. 18 19 18 5.1 k 500 crystal oscillator base the crystal oscillator is a simple colpitts type, operating at a low current. the crystal should operate at 10.250 mhz for 450 khz if or 10.245 mhz for 455 khz if with a 20 pf load capacitance. the oscillator signal to the second mixer is coupled from pin 18 through an emitter follower. if a synthesizer such as the motorola mc145170 with a 15 bit programmable r counter is used, the 10.245 mhz crystal can be connected to the synthesizer, and a 200 m vpp osc illator signal from the synthesizer can be capacitively coupled to pin 18, so only one crystal is needed. 19 crystal oscillator emitter the capacitive divider from pin 18 is connected as shown in the application circuits of figures 10, 11, 12. 20, 21 20 21 51v mixer2 output the maximum ac collector voltage is about 5.8 vpp or 2.0 vrms. the mixer conversion transconductance g c = 0.0046 mho. the load impedance should be selected so the mixer output does not overload before the input. 22 5.1 v to agc circuit 2.4 k 22 51 51 3.0 ma 3.7 v mixer2 input the input impedance is 2.4 k. a series rc network from pin 22 to ground or a resistor from the filter to pin 22 can be used to properly match the filter. in most cases, a 10.7 mhz crystal filter can be connected to pin 22 directly without any additional components. ip3 (third order intercept) at the input is 5.0 dbm (112 db m ). to guarantee 50 db im3, the input level should not be greater than 20 dbm (87 db m ) (22.7 mvrms). 23 23 6.5 v v ref v ref this is the main reference voltage for most of the circuits in the ic and should be bypassed with a 1.0 m f capacitor. 24, 25 vco 24 5.1 v 25 mixer1 output the maximum collector voltage is about 5.8 vpp or 2.0 vrms. the mixer conversion transconductance g c = 0.0022. the load impedance should be selected so the mixer output does not overload before the input.
mc13030 9 motorola analog ic device data pin function description (continued) pin no. description internal equivalent circuit 26 v cc v ref 26 75 vco reference the first oscillator coil is connected from pin 26 to 27. pin 26 must be bypassed to ground with a capacitor which has a low impedance at the oscillator frequency. this capacitor also will reduce the phase noise of the vco. 27 7.5 k 27 to mixer1 vco the vco is a negative resistance type and has an internal level control circuit so a tapped coil or one with a secondary is not needed. the level is fixed at 0.8 vpp so the oscillator signal does not modulate the tuning diode, thus keeping the distortion low. the oscillator stray capacitance is 12 pf and the tuned circuit impedance should be greater than 3.0 k to guarantee oscillation. oscillator range is up to 45 mhz so it can be used for sw receivers. 28 100 28 vco out the output level is 240 mvrms (108 db m ), high enough to drive any cmos synthesizer. am car radio design notes the mc13030 am radio ic is intended for dual conversion am radios. in most cases, the 1st if frequency (f if1 ) is upconverted above the highest input frequency. the first oscillator (vco) is tuned by a synthesizer and operates at f in + f if1 . for the 530 to 1700 khz am band with a 10.7 mhz first if, the vco goes from 11.23 to 12.40 mhz. therefore, f max /f min for vco is only 1.104, so one lowcost tuning diode can be used. since the required tuning voltage range can be made less than 5.0 v, it may also be possible to drive the tuning diode directly or from the phase detector of the synthesizer ic, such as the motorola mc145170, operating from 5.0 v, without using a buffer amplifier or transistor. if the vco is above the incoming frequency, the image frequency of the first mixer is at f osc + f if1 . for the am broadcast receiver, it is around 22 mhz, so a simple lpf can be used between the rf stage and mixer1 input. however, if a lpf is used, an additional coil is still needed to supply the collector voltage of the rf amplifier. for this reason, a bpf filter was used in the application circuit instead, since it uses the same number of coils and gives better performance. it is simply a lowpass to bandpass conversion. the lowpass filter is designed to have a cutoff frequency equal to the desired bandwidth. in this case, it would be 1700 530 khz = 1170 khz. then, it is transformed to be resonant at 949 khz, the geometric mean of the end frequencies: 1700 x 530 = 949 khz. a balancedtounbalanced transformer is required at the output of both mixers. the first one is designed so that mixer1 has enough gain to overcome the loss of the 10.7 mhz filter and so that the output of the mixer will not overload before the input. the primary impedance of the transformer is relatively low, and it may be difficult to control with commonly available 7.0 mm transformers because the number of primary turns is quite small. it would also require a large tuning capacitance. a better solution is to tune the secondary with a small capacitance and then use a capacitive divider to match the tuned circuit to the filter. this allows one transformer to be used for either a ceramic or crystal filter. the capacitors can be adjusted to match the filter. the recommended coil is made this way. if the formula: p in = ip3 dr/2 is used, the maximum input level to the mixer can be calculated for a desired dynamic range. ip3 = 3rd order intercept level in db (dbm or db m ) dr = dynamic range in db between the desired signals and 3rd order intermodulation products p in = input level in dbm or db m the rf agc level can then be adjusted so that p in does not exceed this level. whether or not a narrow bandwidth crystal or wide bandwidth ceramic filter is used between the first and second mixers depends on the receiver requirements. it is possible to achieve about 50 db adjacent channel and im rejection with a ceramic filter because of the wide dynamic range of the mixers. if more than this is required, a crystal filter should be used. if a crystal filter is used, a lower cost cfu type of 455 khz second if filter can be used. if a ceramic filter is used, a cfw type filter should be used because there is no rf section selectivity in this type of radio. since the wideband agc system is quite sensitive, it can be set to eliminate all spurious responses present at the receiver output. however, the rf agc will sometimes eliminate or reduce the level of desired signals if there is a strong signal somewhere in the bandpass of the rf circuit. the second mixer is designed like the first and requires a balanced output. since its load impedance is higher, the transformer can be designed to be tuned on the primary or
mc13030 10 motorola analog ic device data secondary, but, like with the one for the first mixer, if the secondary is tuned, the tap can be adjusted for the impedance of the 455 khz filter. wideband filters usually have a higher terminating resistance than the narrowband ones. the recommended coil is made this way. the if amplifier is basically a transconductance amplifier because the output is a current source. the output is also internally connected to a high impedance am detector. g m for the if amplifier is 0.028 mho. the voltage gain will be the detector coil impedance x 0.028. this can be designed to give the desired audio output level for a given rf input level. if it is set too high, the receiver may oscillate with no input signal. the application circuit was designed for a relatively narrow bandwidth, so a tapped detector coil is used to get the desired gain. if a wide bandwidth receiver is desired, the detector coil can be untapped, and a resistor can be added across the coil to get the desired q. the detector output on pin 13 is a low impedance. it supplies the if agc signal to pin 12, so the audio must be filtered out. the time constant of this filter is up to the designer. the main requirement is usually the allowable audio distortion at 100 hz, 80% modulation. if the time constant is made too long, the audio level will be slow to correct when changing stations. the signal strength (s) output is dependent only on the if amplifier input level. its maximum voltage is about 5.0 v with a 75 k load resistor. the range can be reduced by using a lower value for the resistor on pin 11. the s signal will stop increasing when the rf agc circuits become active, so if the rf agc threshold is set too low, or there is too much loss from the mixer2 output to the if input, the maximum s signal will be reduced. the desired load resistor on pin 11 (r11) can be determined using the curve of pin 11 current versus if input. setting the rf agc threshold is probably the most difficult because a tradeoff between allowable interference and suppression of desired signals must be made. first select the values for both mixers: a. using the formula p in = ip3 dr/2 select the desired dynamic range and calculate the maximum input levels for both mixers. remember that all levels must be in db, db m v or dbm. let dr = 50 db. ip3 for mixer2 = 112 db m v. therefore, p inmax = 87 db m v. ip3 for mixer1 = 127 db m v. therefore, p inmax = 102 db m v. b. first, adjust the resistor from pin 6 to ground to give the desired maximum input level to mixer2. from the curve of pin 6 current versus mixer2 input level, r6 = 1.2/110 m a = 11 k. r int = 39 k, so r 6ext = 15 k. c. from the curve of pin 6 current versus mixer1 input level, determine how much more gain would be required in the mixer1 agc circuit to achieve the desired dynamic range for mixer1. from the curve of relative sensitivity versus r7 determine the value of r7. alternatively, r7 can be adjusted to give the desired maximum input level to mixer1. the resulting r7 may be too small to set the agc threshold of mixer1 as low as desired. also, if r7 is less than 680 w , the agc sensitivity for the mixer1 input falls off at higher frequencies, so in these cases, the resistor from pin 6 to ground must be reduced to achieve the desired level because the overload of mixer1 provides the most important spurious response rejection. however, if the agc level is set too high, the if in signal may become too large and the if amplifier can overload with strong signals. the values used in the application are more conservative. the gain from the antenna input to the point being measured are shown on the am radio application. these are helpful when calculating audio sensitivity and troubleshooting a new radio.
mc13030 11 motorola analog ic device data fl1 t3 figure 10. 2 8.0 v a1 l6 c30 t1 0.01 cfu455h2 crystal filter ceramic filter 8.0 v 8.0 v 10.5 x tuning voltage d1 c26 10.245 + r17 c12 r5 r12 56 pf 34 in 5 1 88 x 28 27 26 25 24 23 22 21 20 19 18 17 16 15 123456 7891011121314 af out 0 to 4.8 v if output to rf in 47 1.07.0 v mv209 c4 c20 0.1 c8 1.0 f m 9.8 h m 19335 t2 12704 c29 330 pf 47 c27 2200 pf 270 pf c14 47 pf x1 cfw455h out gnd gnd gnd 130 x c13 22 pf 10m7a 180 k 0.1 sk107m5ae10a sfe10.7mhy 123 123 c19 22 pf c25 0.01 r13 33 k c2 0.1 r3 1.0 k c16 120 pf l2 220 h m l4 220 h m c17 120 pf 4.5 x r4 1.0 k l3 220 h m c18 120 pf c15 0.1 r8 47 + c7 1.0 f m r6 33 k r7 1.0 k r14 56 k r v1 100 k r10 68 k c23 0.01 signal detector c22 0.1 d2 1n4148 c21 0.01 + c5 m c3 0.01 c1 0.1 l1 1.5 mh r1 1.0 k l5 33 h m r2 180 signal strength + c9 + c10 r9 10 k r11 10 k r15 2.7 k + c6 c11 0.1 b1 bead c28 0.01 r16 390 r18 1.5 k ic1 mc13030 v cc 47 f 6.5 x m 4.7 f m 47 f af if agci s out if out if gnd sd adj m1 agcl rf agcl rf agc2 fet agc rf gnd m1 in m1 in osc out osc osc vr m1 out m1 out rf vr m2 in m2 out m2 out xtal e xtal b if in if vr det in d3 1n4148 q1 j309 q2 2n4401 figure 10. am radio application 12705 c24 27 nf c31 0.01 fl2 m 4.7 f
mc13030 12 motorola analog ic device data sw radio design notes the shortwave receiver was designed to cover from 5.0 to 10 mhz. this mc13030 radio has better performance than most receivers because of the high dynamic range and spurious rejection of the mixers. the rf stage bandpass filter for this radio is the same type as the one used for the car radio, but the series tuned section was scaled down in impedance to reduce the inductance of the coil. since most sw receivers include an ssb and cw mode, the detector coil could have a secondary winding to supply the second if signal to this section. the capacitors c10 and c23 have been reduced from those in the am radio so that the agc system can follow variations in signal level due to fading. cb radio design notes the rf stage bandpass filter for this radio consists of a tuned input and a double tuned interstage filter. for lower cost radios, a single tuned interstage filter could be used. the schematic also shows a crystal 10.7 mhz 1st if filter, but a ceramic or coil filter could also be used. an intermodulation rejection of 50 db can be obtained with a ceramic 1st if filter. a bipolar transistor is shown for the rf stage. a dual gate cmos fet could also be used with g2 connected to the agc voltage on pin 4. a pin diode is recommended for d2. coil data t1 toko a119ans19335uh t2 toko a7mns12704uh t3 toko a7mcs12705y
mc13030 13 motorola analog ic device data figure 11. 2 8.0 v a1 l6 c26 t1 0.01 crystal filter 8.0 v tuning d1 c27 10.245 + c12 r5 r13 56 pf 34 in 5 1 28 27 26 25 24 23 22 21 20 19 18 17 16 15 1 2 3 4 5 6 7 8 9 10 11 12 13 14 am af out 0 to 4.8 v if output to rf in 47 mv209 c4 c20 0.1 c8 1.0 f m 2.7 h m 19335 t2 12704 c25 330 pf 47 c28 2200 pf 330 pf c14 47 pf x1 cfw455ht out gnd gnd gnd fl2 c13 22 pf 10m7a 0.1 123 c19 100 pf r14 33 k c2 0.1 r3 1.0 k c32 68 pf l2 15 h m l4 15 h m c17 39 pf r4 1.0 k l3 15 h m c18 39 pf c15 0.1 r8 47 + c7 1.0 f m r6 33 k r7 1.0 k r10 75 k c9 0.01 fm detector c22 0.1 d2 1n4148 c21 0.01 + c5 m c3 0.01 c1 0.1 l1 1.5 mh r1 1.0 k l5 33 h m r2 180 signal strength + c23 + r9 10 k r11 10 k r12 2.7 k + c6 c11 0.1 b1 bead r15 1.5 k ic1 mc13030 v cc 47 f m 1.0 f m 47 f af if agci s out if out if gnd sd adj m1 agcl rf agcl rf agc2 fet agc rf gnd m1 in m1 in osc out osc osc vr m1 out m1 out rf vr m2 in m2 out m2 out xtal e xtal b if in if vr det in d3 1n4148 q1 j309 q2 2n4401 figure 11. 5 to 10 mhz radio application voltage c31 100 pf if output to ssb demodulator c30 0.01 t3 12705 c16 68 pf c10 m 1.0 f c24 27 nf c29 0.01 osc output to synthesizer
mc13030 14 motorola analog ic device data figure 12. 8.0 v a1 l5 c26 t1 0.01 cfu455h2 8.0 v 8.0 v tuning d1 c27 + r5 r12 56 pf 2 in 31 28 27 26 25 24 23 22 21 20 19 18 17 16 15 123456 7891011121314 af out 0 to 4.8 v if output to rf in 47 mv209 c4 c20 0.1 c8 1.0 f m 1.0 h m 19335 t2 12704 c25 330 pf 47 c28 2200 pf 270 pf c14 47 pf out gnd c13 22 pf c19 47 pf r13 33 k c2 0.1 c15 0.01 r7 47 + c7 1.0 f m r5 68 k r6 1.0 k r14 56 k r v1 100 k r9 75 k c23 0.01 signal detector c21 0.01 d2 ba243 l1 1.0 mh signal strength + c9 + c10 r8 10 k r10 10 k r15 2.7 k + c6 c11 0.1 ic1 mc13030 v cc m 4.7 f m 47 f af if agci s out if out if gnd sd adj m1 agcl rf agcl rf agc2 fet agc rf gnd m1 in m1 in osc out osc osc vr m1 out m1 out rf vr m2 in m2 out m2 out xtal e xtal b if in if vr det in figure 12. cb radio application c30 33 pf crystal filter 10m7a 123 r16 1.5 k c12 0.1 t3 12705 c16 47 pf + c5 m 47 f l3 330 nh l2 330 nh q1 mps9426 r3 10 k c1 0.01 r2 3.9 k c17 0.01 l4 1.0 h m r1 100 c3 100 pf c29 1.8 pf c18 120 pf c22 470 pf voltage osc out to synthesizer 16.265 to 16.705 mhz c 24 27 nf c31 0.01 m 4.7 f fl1 fl2 10.245 x1
mc13030 15 motorola analog ic device data r5 r13 c25 c19 r8 c30 c29 fl1 r16 r12 l6 t1 c28 c8 t2 c13 r17 c9 c12 c10 c24 c6 rv1 c7 c23 c5 r2 l1 l5 r1 c3 r3 c16 l2 l3 c17 c15 c20 c2 c4 r18 c26 c27 c14 x1 r9 r11 r15 r10 r14 c31 c22 r6 r7 c21 c1 r4 l4 c18 c11 t3 fl2 d1 d2 d3 j j af gnd +8.0 v if out s ant in gnd gnd vco v+ q2 q1 figure 13. printed circuit board (top view) 4.0 (bottom view) 4.0 3.0 3.0 note: j = jumper
mc13030 16 motorola analog ic device data dw suffix plastic package case 751f04 issue e outline dimensions notes: 1. dimensioning and tolerancing per ansi y14.5m, 1982. 2. controlling dimension: millimeter. 3. dimension a and b do not include mold protrusion. 4. maximum mold protrusion 0.15 (0.006) per side. 5. dimension d does not include dambar protrusion. allowable dambar protrusion shall be 0.13 (0.005) total in excess of d dimension at maximum material condition. j k f 1 15 14 28 a b 28x 14x d p s a m 0.010 (0.25) b s t m 0.010 (0.25) b m 26x g t seating plane c x 45 r m dim min max min max inches millimeters a 17.80 18.05 0.701 0.711 b 7.40 7.60 0.292 0.299 c 2.35 2.65 0.093 0.104 d 0.35 0.49 0.014 0.019 f 0.41 0.90 0.016 0.035 g 1.27 bsc 0.050 bsc j 0.23 0.32 0.009 0.013 k 0.13 0.29 0.005 0.011 m 0 8 0 8 p 10.01 10.55 0.395 0.415 r 0.25 0.75 0.010 0.029 motorola reserves the right to make changes without further notice to any products herein. motorola makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does motorola assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation consequential or incidental damages. atypicalo parameters which may be provided in motorola data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. all operating parameters, including atypicalso must be validated for each customer application by customer's technical experts. motorola does not convey any license under its patent rights nor the rights of others. motorola products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the motorola product could create a situation where personal injury or death may occur. should buyer purchase or use motorola products for any such unintended or unauthorized application, buyer shall indemnify and hold motorola and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that motorola was negligent regarding the design or manufacture of the part. motorola and are registered trademarks of motorola, inc. motorola, inc. is an equal opportunity/affirmative action employer. how to reach us: usa / europe / locations not listed : motorola literature distribution; japan : nippon motorola ltd.; tatsumispdjldc, 6f seibubutsuryucenter, p.o. box 20912; phoenix, arizona 85036. 18004412447 or 6023035454 3142 tatsumi kotoku, tokyo 135, japan. 038135218315 mfax : rmfax0@email.sps.mot.com touchtone 6 022446609 asia / pacific : motorola semiconductors h.k. ltd.; 8b tai ping industrial park, internet : http://designnet.com 51 ting kok r oad, tai po, n.t., hong kong. 85226629298 mc13030/d ?

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