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general description operating at 1.8v from a single power supply, the MAX9516 amplifies standard-definition video signals and only consumes 6mw quiescent power and 12mw average power. the MAX9516 leverages maxim? directdrive technology. combining directdrive with the external positive 1.8v supply, the MAX9516 is able to drive a 2v p-p video signal into a 150 ? load. the MAX9516 has the ability to detect and report the pres- ence of a video load and reduce power consumption when the load is not present. the MAX9516 can detect the presence of a video load and report a change in load through the load flag. this feature helps reduce overall system power con- sumption because the video encoder and the MAX9516 only need to be turned on when a video load is con- nected. if no load is connected, the MAX9516 is placed in an active-detect mode and only consumes 31?. maxim? directdrive technology eliminates large output- coupling capacitors and sets the output video black level near ground. directdrive requires an integrated charge pump and an internal linear regulator to create a clean negative power supply so that the amplifier can pull the sync below ground. the charge pump injects so little noise into the video output that the picture is visibly flawless. the MAX9516 features an internal reconstruction filter that smoothes the steps and reduces the spikes on the video signal from the video digital-to-analog converter (dac). the reconstruction filter typically has ?db passband flatness of 7.5mhz, and 46db (typ) attenua- tion at 27mhz. the input of the MAX9516 can be directly connected to the output of a video dac. the MAX9516 also features a transparent input sync-tip clamp, allowing ac-cou- pling of input signals with different dc biases. the MAX9516 has an internal fixed gain of 8. the input full-scale video signal is nominally 0.25v p-p , and the output full-scale video signal is nominally 2v p-p . applications digital still cameras (dsc) digital video cameras (dvc) mobile phones portable media players (pmp) security/cctv cameras automotive applications features 1.8v or 2.5v single-supply operation low power consumption (6mw quiescent, 12mw average) video load detect reconstruction filter with 5.5mhz passband directdrive sets video output black level near ground dc-coupled input/output transparent input sync-tip clamp MAX9516 1.8v, ultra-low-power, directdrive video filter amplifier with load detect ________________________________________________________________ maxim integrated products 1 block diagram ordering information 0v 2v p-p video MAX9516 a v = 8v/v linear regulator charge pump load sense transparent clamp out load in shdn 250mv p-p video lpf shutdown circuit 19-0995; rev 0; 9/07 for pricing, delivery, and ordering information, please contact maxim direct at 1-888-629-4642, or visit maxim? website at www.maxim-ic.com. note: this device operates over the -40? to +125? operating temperature range. + denotes lead-free package. t = tape and reel. pin configuration appears at end of data sheet. evaluation kit available part pin-package pkg code top mark MAX9516alb+t 10 ?fn-10 l1022+1 aan
MAX9516 1.8v, ultra-low-power, directdrive video filter amplifier with load detect 2 _______________________________________________________________________________________ absolute maximum ratings electrical characteristics (v dd = shdn = +1.8v, gnd = 0v, out has r l = 150 ? connected to gnd, c1 = c2 = 1?, t a = t min to t max , unless otherwise noted. typical values are at v dd = 1.8v, t a = +25?.) (note 1) stresses beyond those listed under ?bsolute maximum ratings?may cause permanent damage to the device. these are stress rating s only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specificatio ns is not implied. exposure to absolute maximum rating conditions for extended periods may affect device reliability. (voltages with respect to gnd.) v dd ...........................................................................-0.3v to +3v cpgnd..................................................................-0.1v to +0.1v in ................................................................-0.3v to (v dd + 0.3v) out .......................(the greater of v ss and -1v) to (v dd + 0.3v) shdn ........................................................................-0.3v to +4v c1p.............................................................-0.3v to (v dd + 0.3v) c1n .............................................................(v ss - 0.3v) to +0.3v v ss ............................................................................-3v to +0.3v duration of out short circuit to v dd , gnd, and v ss .........................................................continuous continuous current in, shdn , load .............................................................?0ma continuous power dissipation (t a = +70?) 10-pin ?fn (derate 5mw/? above +70?) ...............403mw operating temperature range ............................-40? to +125? junction temperature........................................................+150? storage temperature range .............................-65? to +150? lead temperature (soldering, 10s) .................................+300? parameter symbol conditions min typ max units supply voltage range v dd guaranteed by psrr 1.700 2.625 v full operation mode, v in = 0mv (note 2) 3.1 5.3 ma supply current i dd amplifier on, shdn = v dd active-detect mode, no load 3a shutdown supply current i shdn shdn = gnd 0.01 10 ? output load detect threshold r l to gnd 200 ? output level in = 80mv -85 +9 +85 mv dc-coupled input 1.7v v dd 2.625v 0 262.5 input voltage range guaranteed by output-voltage swing 2.375v v dd 2.625v 0 325 mv input current i b in = 130mv 2 3.5 ? input resistance r in 10mv in 250mv 295 k ? ac-coupled input sync-tip clamp level v clp c in = 0.1? -8 0 +11 mv 1.7v v dd 2.625v 252.5 input-voltage swing guaranteed by output-voltage swing 2.375v v dd 2.625v 325 mv p-p sync crush percentage reduction in sync pulse at output, r source = 37.5 ? , c in = 0.1? 1.3 % input clamping current in = 130mv 2 3.5 ? line time distortion c in = 0.1? 0.2 % minimum input source resistance 25 ?
MAX9516 1.8v, ultra-low-power, directdrive video filter amplifier with load detect _______________________________________________________________________________________ 3 parameter symbol conditions min typ max units dc characteristics dc voltage gain a v guaranteed by output-voltage swing (note 3) 7.84 8 8.16 v/v 0 v in 262.5mv, dc-coupled input 2.058 2.1 2.142 1.7v v dd 2.625v 0 v in 252.5mv p-p , ac-coupled input 1.979 2.02 2.061 output-voltage swing 2.375v v dd 2.625v 0 v in 325mv 2.548 2.6 2.652 v p-p power-supply rejection ratio 1.7v v dd 2.625v, measured between 75 ? load resistors 48 58 db shutdown input resistance 0v in v dd , shdn = gnd 2.5 m ? output resistance r out out = 0v, -5ma i load +5ma 0.02 ? shutdown output resistance 0v out v dd , shdn = gnd 10.0 m ? out leakage current shdn = gnd 1 a sourcing 81 output short-circuit current sinking 45 ma ac characteristics ?db passband flatness 7.5 mhz f = 5.5mhz -0.2 f = 8.5mhz -3.0 standard-definition reconstruction filter out = 2v p-p , reference frequency is 100khz f = 27mhz -48.7 db f = 3.58mhz 1.05 differential gain dg f = 4.43mhz 1.1 % f = 3.58mhz 0.4 differential phase dp f = 4.43mhz 0.45 degrees group-delay distortion 100khz f 5mhz, out = 2v p-p 16 ns peak signal to rms noise 100khz f 5mhz 64 db power-supply rejection ratio psrr f = 100khz, v ripple = 100mv p-p 54 db 2t pulse-to-bar k rating 2t = 200ns, bar time is 18?, the beginning 2.5% and the ending 2.5% of the bar time is ignored 0.1 k% 2t pulse response 2t = 200ns 0.3 k% 2t bar response 2t = 200ns, bar time is 18?, the beginning 2.5% and the ending 2.5% of the bar time is ignored 0.1 k% electrical characteristics (continued) (v dd = shdn = +1.8v, gnd = 0v, out has r l = 150 ? connected to gnd, c1 = c2 = 1?, t a = t min to t max , unless otherwise noted. typical values are at v dd = 1.8v, t a = +25?.) (note 1)
small-signal gain vs. frequency MAX9516 toc01 frequency (mhz) gain (db) 10 1 -80 -60 -40 -20 0 20 -100 0.1 100 v out = 100mv p-p small-signal gain flatness vs. frequency MAX9516 toc02 frequency (mhz) gain (db) 10 1 -2.5 -2.0 -1.5 -1.0 -0.5 0 0.5 1.0 -3.0 0.1 100 v out = 100mv p-p large-signal gain vs. frequency MAX9516 toc03 frequency (mhz) gain (db) 10 1 -80 -60 -40 -20 0 20 -100 0.1 100 v out = 2v p-p typical operating characteristics (v dd = shdn = 1.8v, gnd = 0v, video output has r l = 150 ? connected to gnd, t a = +25?, unless otherwise noted.) MAX9516 1.8v, ultra-low-power, directdrive video filter amplifier with load detect 4 _______________________________________________________________________________________ electrical characteristics (continued) (v dd = shdn = +1.8v, gnd = 0v, out has r l = 150 ? connected to gnd, c1 = c2 = 1?, t a = t min to t max , unless otherwise noted. typical values are at v dd = 1.8v, t a = +25?.) (note 1) parameter symbol conditions min typ max units nonlinearity 5-step staircase 0.2 % output impedance f = 5mhz, in = 80mv 7.5 ? v out -to-v in isolation shdn = gnd, f 5.5mhz -78 db v in -to-v out isolation shdn = gnd, f 5.5mhz -79 db charge pump switching frequency 325 625 1150 khz logic signals logic-low threshold v il shdn , v dd = 1.7v to 2.625v 0.5 v logic-high threshold v ih shdn , v dd = 1.7v to 2.625v 1.4 v logic input current i il , i ih shdn 10 ? output high voltage v oh load, i oh = 3ma v dd - 0.4 v output low voltage v ol load, i ol = 3ma 0.4 v note 1: all devices are 100% production tested at t a = +25?. specifications over temperature limits are guaranteed by design. note 2: supply current does not include current supplied to v out load. note 3: voltage gain (a v ) is a two-point measurement in which the output-voltage swing is divided by the input-voltage swing.
MAX9516 1.8v, ultra-low-power, directdrive video filter amplifier with load detect _______________________________________________________________________________________ 5 large-signal gain flatness vs. frequency MAX9516 toc04 frequency (mhz) gain (db) 10 1 -2.5 -2.0 -1.5 -1.0 -0.5 0 0.5 1.0 -3.0 0.1 100 v out = 2v p-p group delay vs. frequency MAX9516 toc05 frequency (mhz) delay (ns) 10 1 10 20 30 40 50 60 70 80 90 100 110 0 0.1 100 v out = 2v p-p power-supply rejection ratio vs. frequency MAX9516 toc06 frequency (mhz) pssr (db) 10 1 -80 -60 -40 -20 0 20 -100 0.1 100 v ripple = 100mv p-p quiescent supply current vs. temperature MAX9516 toc07 temperature ( c) quiescent supply current (ma) 100 75 50 25 0 -25 1.5 2.0 2.5 3.5 3.0 4.0 4.5 5.0 1.0 -50 125 voltage gain vs. temperature MAX9516 toc08 temperature ( c) voltage gain (v/v) 100 75 50 25 0 -25 7.85 7.90 7.95 8.05 8.00 8.10 8.15 8.20 7.80 -50 125 output voltage vs. input voltage MAX9516 toc09 input voltage (mv) output voltage (v) 350 300 250 200 150 100 50 0 -50 -1.0 -0.5 0 0.5 1.0 1.5 2.0 -1.5 -100 400 typical operating characteristics (continued) (v dd = shdn = 1.8v, gnd = 0v, video output has r l = 150 ? connected to gnd, t a = +25?, unless otherwise noted.)
MAX9516 1.8v, ultra-low-power, directdrive video filter amplifier with load detect 6 _______________________________________________________________________________________ differential gain and phase MAX9516 toc10 differential gain (%) differential phase (deg) 0.4 0.8 1.2 1.6 0 -0.4 0.8 0.4 0 -0.4 -0.8 -1.2 1.2 1 2 34567 1 2 34567 2t response MAX9516 toc11 100ns/div 50mv/div in out 400mv/div 0v 0v 12.5t response MAX9516 toc12 400ns/div 50mv/div 400mv/div in out 0v 0v typical operating characteristics (continued) (v dd = shdn = 1.8v, gnd = 0v, video output has r l = 150 ? connected to gnd, t a = +25?, unless otherwise noted.) ntc-7 video test signal MAX9516 toc13 10 s/div 100mv/div 800mv/div in out 0v 0v field square-wave (ac-coupled) MAX9516 toc14 2ms/div 100mv/div 800mv/div in out 0v 0v
MAX9516 1.8v, ultra-low-power, directdrive video filter amplifier with load detect _______________________________________________________________________________________ 7 pin description pin name function 1v ss charge-pump negative power supply. bypass with a 1? capacitor to gnd. 2 c1n charge-pump flying capacitor negative terminal. connect a 1? capacitor from c1p to c1n. 3 cpgnd charge-pump ground 4 c1p charge-pump flying capacitor positive terminal. connect a 1? capacitor from c1p to c1n. 5v dd positive power supply. bypass with a 0.1? capacitor to gnd. 6 load load-detect output. load goes high when an output video load is detected. 7 gnd ground 8 in video input 9 shdn active-low shutdown. connect to v dd for normal operation. 10 out video output detailed description the MAX9516 represents maxim? second-generation of directdrive video amplifiers, which meet the require- ments of current and future portable equipment: 1.8v operation. engineers want to eliminate the 3.3v supply in favor of lower supply voltages. lower power consumption. the MAX9516 reduces average power consumption by up to 75% com- pared to the 3.3v first-generation devices (max9503/ max9505). internal fixed gain of 8. as the supply voltages drop for system chips on deep submicron processes, the video dac can no longer create a 1v p-p signal at its output, and the gain of 2 found in the previous gen- eration of video filter amps is not enough. active-detect mode reduces power consumption. directdrive technology is necessary for a voltage-mode amplifier to output a 2v p-p video signal from a 1.8v supply. the integrated inverting charge pump creates a negative supply that increases the output range and gives the video amplifier enough headroom to drive a 2v p-p video signal with a 150 ? load. directdrive background integrated video filter amplifier circuits operate from a single supply. the positive power supply usually cre- ates video output signals that are level-shifted above ground to keep the signal within the linear range of the output amplifier. for applications where the positive dc level is not acceptable, a series capacitor can be inserted in the output connection in an attempt to elimi- nate the positive dc level shift. the series capacitor cannot truly level-shift a video signal because the aver- age level of the video varies with picture content. the series capacitor biases the video output signal around ground, but the actual level of the video signal can vary significantly depending upon the rc time constant and the picture content. the series capacitor creates a highpass filter. since the lowest frequency in video is the frame rate, which can be from 24hz to 30hz, the pole of the highpass filter should ideally be an order of magnitude lower in frequency than the frame rate. therefore, the series capacitor must be very large, typically from 220? to 3000?. for space- constrained equipment, the series capacitor is unac- ceptable. changing from a single-series capacitor to a sag network that requires two smaller capacitors only reduces space and cost slightly. the series capacitor in the usual output connection also prevents damage to the output amplifier if the con- nector is shorted to a supply or to ground. while the output connection of the MAX9516 does not have a series capacitor, the MAX9516 will not be damaged if the connector is shorted to a supply or to ground (see the short-circuit protection section). video amplifier if the full-scale video signal from a video dac is 250mv, the black level of the video signal created by the video dac is approximately 75mv. the MAX9516 shifts the black level to near ground at the output so that the active video is above ground and the sync is below ground. the amplifier needs a negative supply for its output stage to remain in its linear region when driving sync below ground.
MAX9516 1.8v, ultra-low-power, directdrive video filter amplifier with load detect 8 _______________________________________________________________________________________ the MAX9516 has an integrated charge pump and lin- ear regulator to create a low-noise negative supply from the positive supply voltage. the charge pump inverts the positive supply to create a raw negative volt- age that is then fed into the linear regulator, which fil- ters out the charge-pump noise. comparison between directdrive output and ac-coupled output the actual level of the video signal varies less with a directdrive output than an ac-coupled output. the average video signal level can change greatly depend- ing upon the picture content. with an ac-coupled out- put, the average level will change according to the time constant formed by the series capacitor and series resistance (usually 150 ? ). for example, figure 1 shows an ac-coupled video signal alternating between a completely black screen and a completely white screen. notice the excursion of the video signal as the screen changes. with the directdrive amplifier, the black level is held at ground. the video signal is constrained between -0.3v and +0.7v. figure 2 shows the video signal from a directdrive amplifier with the same input signal as the ac-coupled system. load detection the MAX9516 provides a video load detection feature. the device enters active-detect mode when it is enabled ( shdn = v dd ). every 128ms, the part checks for a load by connecting a 7.5k ? pullup resistor to the video output for 1ms. if the video output is pulled up during the test, then no load is present and load is low. if the video output stays low during the test, then a load is connected and load goes high. the state of load is latched during the sleep time between sense pulses. all load-detect changes are deglitched over a nominal 128ms period. the status of the video load must remain constant during this deglitch period for load to change state. if a load is detected, the part enters the full operation mode and the amplifier, filter, and sync-tip clamp turn on. the part then continually checks if the load is pre- sent by sensing the sinking load current. therefore, a black-burst signal (or output signal < 0v) is required to maintain the detected load status. if the load remains present, the load pin remains high. if the load is removed, load goes low and the part goes back to the active-detect mode in which power consumption is typically 31?. video reconstruction filter the MAX9516 includes an internal five-pole, butterworth lowpass filter to condition the video signal. the reconstruction filter smoothes the steps and reduces the spikes created whenever the dac output changes value. in the frequency domain, the steps and spikes cause images of the video signal to appear at multiples of the sampling clock frequency. the recon- struction filter typically has ?db passband flatness of 7.5mhz and 46db (typ) attenuation at 27mhz. transparent sync-tip input clamp the MAX9516 contains an integrated, transparent sync-tip clamp. when using a dc-coupled input, the sync-tip clamp does not affect the input signal, as long as it remains above ground. when using an ac-cou- input 500mv/div output 500mv/div 2ms/div figure 1. ac-coupled output input 500mv/div output 1v/div 2ms/div 0v 0v figure 2. directdrive output
MAX9516 1.8v, ultra-low-power, directdrive video filter amplifier with load detect _______________________________________________________________________________________ 9 pled input, the sync-tip clamp automatically clamps the input signal to ground, preventing it from going lower. a small current of 2? pulls down on the input to prevent an ac-coupled signal from drifting outside the input range of the part. using an ac-coupled input will result in some addition- al variation of the black level at the output. applying a voltage above ground to the input pin of the device always produces the same output voltage, regardless of whether the input is dc- or ac-coupled. however, since the sync-tip clamp level (v clp ) can vary over a small range, the video black level at the output of the device when using an ac-coupled input can vary by an additional amount equal to the v clp multiplied by the dc voltage gain (a v ). short-circuit protection in figure 7, the MAX9516 includes a 75 ? back-termina- tion resistor that limits short-circuit current if an external short is applied to the video output. the MAX9516 also features internal output short-circuit protection to prevent device damage in prototyping and applications where the amplifier output can be directly shorted. shutdown the MAX9516 features a low-power shutdown mode for battery-powered/portable applications. shutdown reduces the quiescent current to less than 10na. connecting shdn to ground (gnd) disables the output and places the MAX9516 into a low-power shutdown mode. in shutdown mode, the sync-tip clamp, filter, amplifier, charge pump, and linear regulator are turned off and the video output is high impedance. applications information power consumption the quiescent power consumption and average power consumption of the MAX9516 is remarkably low because of the 1.8v operation and the directdrive technology. quiescent power consumption (p q ) is the power consumed by the internal circuitry of the MAX9516. the formula for calculating pq is below. p q = p total - p load p total is the total power drawn from the supply volt- age, and p load is the power consumed by the load attached to out. for the MAX9516, the quiescent power consumption is typically 6mw. average power consumption, which is representative of the power consumed in a real application, is the total power drawn from the supply voltage for a MAX9516 driving a 150 ? load to ground with a 50% flat field. under such conditions, the average power consumption for the MAX9516 is 12mw. table 1 shows the power consumption with different video signals. the supply voltage is 1.8v. out drives a 150 ? load to ground. notice that the two extremes in power consumption occur with a video signal that is all black and a video signal that is all white. the power consumption with 75% color bars and a 50% flat field lies in between the extremes. interfacing to video dacs that produce video signals larger than 0.25v p-p devices designed to generate 1v p-p video signals at the output of the video dac can still work with the MAX9516. most video dacs source current into a ground-referenced resistor, which converts the current into a voltage. figure 3 shows a video dac that creates a video signal from 0 to 1v across a 150 ? resistor. the following video filter amplifier has a gain of 2v/v so that the output is 2v p-p . the MAX9516 expects input signals that are 0.25v p-p nominally. the same video dac can be made to work with the MAX9516 by scaling down the 150 ? resistor to a 37.5 ? resistor, as shown in figure 4. the 37.5 ? resis- tor is one-quarter of the 150 ? resistor, resulting in a video signal that is one-quarter the amplitude. video signal MAX9516 power consumption (mw) all black screen 6.7 all white screen 18.2 75% color bars 11.6 50% flat field 11.7 150 ? 0 to 1v lpf dac image processor asic 75 ? 2v/v figure 3. video dac generates a 1v p-p signal across a 150 ? resistor connected to ground. table 1. power consumption of MAX9516 with different video signals
MAX9516 1.8v, ultra-low-power, directdrive video filter amplifier with load detect 10 ______________________________________________________________________________________ anti-alias filter the MAX9516 provides anti-alias filtering with buffering before an analog-to-digital converter (adc), which is present in an ntsc/pal video decoder, for example. figure 5 shows an example application circuit. an exter- nal composite video signal is applied to vidin, which is terminated with a total of 74 ? (56 ? and 18 ? resistors) to ground. the signal is attenuated by four, and then ac-coupled to in. the normal 1v p-p video signal must be attenuated because with a 1.8v supply, the MAX9516 can handle only a video signal of approxi- mately 0.25v p-p at in. ac-couple the video signal to in because the dc level of an external video signal is usu- ally not well specified, although it is reasonable to expect that the signal is between -2v and +2v. the 10 ? series resistor increases the equivalent source resis- tance to about 25 ? , which is the minimum necessary for a video source to drive the internal sync-tip clamp. for external video signals larger than 1v p-p , operate the MAX9516 from a 2.5v supply so that in can accom- modate a 0.325v p-p video signal, which is equivalent to a 1.3v p-p video signal at vidin. 37.5 ? 0 to 0.25v lpf dac image processor asic MAX9516 75 ? 8v/v figure 4. video dac generates a 0.25v p-p signal across a 37.5 ? resistor connected to ground MAX9516 load sense v dd vidin video amplifier shutdown circuit shdn dc level shift clamp 1.8v v dd out 56 ? 18 ? 10 ? 75 ? 75 ? load video decoder charge pump linear regulator c1 1 f c2 1 f 0.1 f 0.1 f lpf gnd cpgnd c1p c1n v ss in figure 5. MAX9516 used as an anti-alias filter with buffer
MAX9516 1.8v, ultra-low-power, directdrive video filter amplifier with load detect ______________________________________________________________________________________ 11 video source with a positive dc bias in some applications, the video source generates a sig- nal with a positive dc voltage bias, i.e. , the sync tip of the signal is well above ground. figure 6 shows an example in which the outputs of the luma (y) dac and the chroma (c) dac are connected together. since the dacs are current mode, the output currents sum togeth- er into the resistor, which converts the resulting current into a voltage representing a composite video signal. if the chroma dac has an independent output resistor to ground, then the chroma signal, which is a carrier at 3.58mhz for ntsc or at 4.43mhz for pal, has a posi- tive dc bias to keep the signal above ground at all times. if the luma dac has an independent output resistor to ground, then the luma signal usually does not have a positive dc bias, and the sync tip is at approximately ground. when the chroma and luma sig- nals are added together, the resulting composite video signal still has a positive dc bias. therefore, the signal must be ac-coupled into the MAX9516 because the composite video signal is above the nominal, dc-cou- pled 0v to 0.25v input range. video signal routing minimize the length of the pcb trace between the out- put of the video dac and the input of the MAX9516 to reduce coupling of external noise into the video signal. if possible, shield the pcb trace. MAX9516 load sense v dd video amplifier luma (y) chroma (c) shdn in dc level shift clamp 1.8v v dd out 75 ? 75 ? load charge pump linear regulator c1 1 f c2 1 f 0.1 f 0.1 f lpf gnd cpgnd c1p c1n v ss dac dac video asic figure 6. luma (y) and chroma (c) signals added together to create composite video signal (which is ac-coupled into the MAX9516)
MAX9516 1.8v, ultra-low-power, directdrive video filter amplifier with load detect 12 ______________________________________________________________________________________ power-supply bypassing and ground management the MAX9516 operates from a 1.7v to 2.625v single supply and requires proper layout and bypassing. for the best performance, place the components as close to the device as possible. proper grounding improves performance and prevents any switching noise from coupling into the video signal. bypass the analog supply (v dd ) with a 0.1? capacitor to gnd, placed as close to the device as possible. bypass v ss with a 1? capacitor to gnd as close to the device as possible. the total system bypass capac- itance on v dd should be at least 10? or ten times the capacitance between c1p and c1n. using a digital supply the MAX9516 was designed to operate from noisy digi- tal supplies. the high psrr (54db at 100khz) allows the MAX9516 to reject the noise from the digital power supplies (see the typical operating characteristics ). if the digital power supply is very noisy and stripes appear on the television screen, increase the supply bypass capacitance. an additional, smaller capacitor in parallel with the main bypass capacitor can reduce digital supply noise because the smaller capacitor has lower equivalent series resistance (esr) and equivalent series inductance (esl). MAX9516 load sense v dd video amplifier shdn in dc level shift transparent clamp 1.8v v dd out load charge pump linear regulator c1 1 f c2 1 f 0.1 f lpf gnd cpgnd c1p c1n v ss dac video asic 75 ? 75 ? figure 7. dc-coupled input typical operating circuits
MAX9516 1.8v, ultra-low-power, directdrive video filter amplifier with load detect ______________________________________________________________________________________ 13 MAX9516 load sense v dd video amplifier shdn in dc level shift clamp 1.8v v dd out load charge pump linear regulator c1 1 f c2 1 f 0.1 f 0.1 f lpf gnd cpgnd c1p c1n v ss v dd dac video asic figure 8. ac-coupled input typical operating circuits (continued) chip information process: bicmos pin configuration 123 10 + 98 45 76 out in load shdn v ss v dd cpgnd c1n MAX9516 dfn top view gnd c1p
MAX9516 1.8v, ultra-low-power, directdrive video filter amplifier with load detect 14 ______________________________________________________________________________________ package information (the package drawing(s) in this data sheet may not reflect the most current specifications. for the latest package outline info rmation go to www.maxim-ic.com/packages .) 6, 8, 10l udfn.eps even terminal l c odd terminal l c l e l a e e d pin 1 index area b e a b n solder mask coverage a a 1 pin 1 0.10x45 l l1 (n/2 -1) x e) xxxx xxxx xxxx sample marking a1 a2 7 a 1 2 21-0164 package outline, 6, 8, 10l udfn, 2x2x0.80 mm -drawing not to scale-
MAX9516 1.8v, ultra-low-power, directdrive video filter amplifier with load detect maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a maxim product. no circu it patent licenses are implied. maxim reserves the right to change the circuitry and specifications without notice at any time. maxim integrated products, 120 san gabriel drive, sunnyvale, ca 94086 408-737-7600 ____________________ 15 2007 maxim integrated products is a registered trademark of maxim integrated products, inc. package information (continued) (the package drawing(s) in this data sheet may not reflect the most current specifications. for the latest package outline info rmation go to www.maxim-ic.com/packages .) common dimensions symbol min. nom. a 0.70 0.75 a1 d 1.95 2.00 e 1.95 2.00 l 0.30 0.40 pkg. code n e b package variations l1 6 l622-1 0.65 bsc 0.300.05 0.250.05 0.50 bsc 8 l822-1 0.200.03 0.40 bsc 10 l1022-1 2.05 0.80 max. 0.50 2.05 0.10 ref. (n/2 -1) x e 1.60 ref. 1.50 ref. 1.30 ref. a2 - -drawing not to scale- a 2 2 21-0164 package outline, 6, 8, 10l udfn, 2x2x0.80 mm 0.15 0.20 0.25 0.020 0.025 0.035

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