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device operating temperature range package semiconductor technical data 100 mhz video processor with osd interface ordering information MC13282AP t a = 0 to +70 c plastic dip p suffix plastic package case 724 24 1 order this document by mc13282a/d pin connections 124 23 22 21 20 19 18 17 2 3 4 5 6 7 8 (top view) r subcontrast r input g subcontrast b input gnd r osd blank video v cc 16 15 14 13 9 10 11 12 g osd osd contrast b osd contrast g input b subcontrast v cc clamp r emitter r clamp v5 g emitter g clamp fast commutate b clamp b emitter ndip24 1 motorola analog ic device data

the mc13282a is a three channel wideband amplifier designed for use as a video preamp in high resolution rgb color monitors. features: ? 4.0 vpp output with 100 mhz bandwidth ? 3.5 ns rise/fall time ? subcontrast control for each channel ? blanking and clamping inputs ? contrast control ? osd interface with 50 mhz bandwidth ? osd contrast control ? package: ndip24 absolute maximum ratings rating pin value unit power supply voltage v cc 9 0.5, 10 vdc power supply voltage video v cc 17 0.5, 10 vdc voltage at video amplifier inputs 2, 4, 6, 8, 10, 12 0.5, +5.0 vdc collectoremitter current (three channels) 17 120 ma storage temperature 65 to +150 c junction temperature 150 c notes: 1. devices should not be operated at these limits. refer to arecommended operating conditionso section for actual device operation. 2. esd data available upon request. recommended operating conditions characteristic pin min typ max unit power supply voltage 9, 17 7.6 8.0 8.4 vdc contrast control 13 0 5.0 vdc subcontrast control 1, 3, 5 0 5.0 vdc blanking input signal amplitude 24 0 5.0 v clamping input signal amplitude 23 0 5.0 v video signal amplitude (with 75 w termination) 2, 4, 6 0.7 1.0 vpp osd signal input 8, 10, 12 ttl v collectoremitter current (total for three channels) 17 0 50 ma clamping pulse width 23 500 ns operating ambient temperature 0 70 c this document contains information on a new product. specifications and information herein are subject to change without notice. ? motorola, inc. 1996 rev 0
mc13282a 2 motorola analog ic device data electrical characteristics (refer to test circuit figure 1, t a = 25 c, v cc = 8.0 vdc.) characteristic condition pin min typ max unit input impedance 2, 4, 6 100 k w internal dc bias voltage 2.4 vdc output signal amplitude v2, v4, v6 = 0.7 vpp v1 v3 v5 v13 = 5 0 v 15, 19, 22 3.6 4.0 vpp voltage gain v1 , v3 , v5 , v13 = 5 . 0 v v14 = 0 v 5.6 v/v contrast control v13 = 5.0 to 0 v v1, v3, v5 = 5.0 v 13 26 db subcontrast control v1, v3, v5 = 5.0 to 0 v v13 = 5.0 v 1, 3, 5 26 db emitter dc level 15, 19, 22 1.0 1.2 1.4 vdc blanking input threshold 24 1.25 v clamping input threshold 23 3.75 v video rise time v2, v4, v6 = 0.7 vpp v out =40vpp 15, 19, 22 3.5 ns video fall time v out = 4 . 0 v pp r l > 300 w , c l < 5.0 pf 3.5 video bandwidth v2, v4, v6 = 0.7 vpp v1, v3, v5, v13 = 5.0 v v14 = 0 v r l > 300 w , c l < 5.0 pf 15, 19, 22 100 mhz osd rise time v8, v10, v12 = ttl level v11 5 0 v v14 5 0 v 15, 19, 22 7.0 ns osd fall time v11 = 5.0 v, v14 = 5.0 v 7.0 osd bandwidth v8, v10, v12 = ttl level v11 = 5.0 v, v14 = 5.0 v 15, 19, 22 50 mhz osd propagation delay 17 ns power supply current v cc , video v cc = 8.0 v 9, 17 70 ma note: it is recommended to use a double sided pcb layout for high frequency measurement (e.g., rise/fall time, bandwidth).
mc13282a 3 motorola analog ic device data figure 1. internal block diagram 2 fast commutate 14 r input r osd r subcontrast contrast g input g osd g subcontrast osd contrast b input b osd b subcontrast r clamp video v cc r emitter g clamp g emitter blank clamp b clamp b emitter v cc v5 gnd v ref1 v ref1 v ref1 v ref2 v ref2 v ref2 r channel g channel b channel clamp blank decoder contrast and subcontrast control processor contrast and subcontrast control processor contrast and subcontrast control processor 8 1 13 4 10 3 11 6 12 5 21 17 22 18 19 24 23 16 15 9 20 7 this device contains 272 active transistors.
mc13282a 4 motorola analog ic device data pin function description pin name equivalent internal circuit description 1 r subcontrast control v cc these pin provides a maximum of 26 db attenuation to vary the gain of each video amplifier separately. input voltage is from 0 to 5.0 v. increasing the voltage 3 g subcontrast control 5.0 v 50 k input voltage is from 0 to 5 . 0 v . increasing the voltage will increase the contrast level. 5 b subcontrast control 2 r input 5.0 v v ref cl the input coupling capacitor is used for input clamping storage. the maximum source impedance is 100 w . i t l it f th id i l i iti 4 g input 5 . 0 v 10k 10 k clamp 75 w 0.1 input polarity of the video signal is positive. nominal 0.7 vpp input signal is recommended (maximum 1.0 vpp). 6 b input 1.0 k 10 k 75 w 7 ground ground pin. connect to a clean, solid ground. 8 r osd input v cc these inputs are standard ttl level. 10 g osd input 80 k 12 b osd input 60 k 9 v cc connect to 8.0 vdc supply, 5%. decoupling is required at this pin. 11 osd contrast 5.0 v v cc 3.5 k on screen display contrast control. input voltage is from 0 to 5.0 v. increasing the voltage will increase the contrast of the osd signal. 13 contrast 2.5 v 42 k 5.0 v 2.0 k overall contrast control for the three channels. the input range is 0 v to 5.0 v. an increase of voltage increases the contrast.
mc13282a 5 motorola analog ic device data pin function description (continued) pin description equivalent internal circuit name 14 fast commutate v cc 40 k 20 k this pin is used in conjunction with the rgb osd inputs. it is a high speed switch used for overlaying text on picture. a logic low selects pins 2, 4, 6. a logic high selects pins 8, 10, 12. 15 b emitter output v cc vid the video outputs are configured as emitterfollowers with a driving capability of about 15 ma each. the dc voltage at these three emitters is set to 1.2 v 19 g emitter output r e 330 video signal contrast the dc voltage at these three emitters is set to 1 . 2 v (black level). the dc current through the output stage is determined by the emitter resistors (typically 330 w ). 22 r emitter output r e = 330 typical c on t ras t by the emitter resistors (typically 330 w ). 16 b clamp capacitor 1.2 v video out a 100 nf capacitor is connected to each of these pins. the capacitor is used for video output dc restoration. 18 g clamp capacitor v cc 21 r clamp capacitor 17 video v cc connect to 8.0 v dc supply, 5%. this v cc is for the video output stage. it is internally connected to the collectors of the output transistors. 20 5.0 v ref (v5) v cc band gap regulator 5.0 v 10 m f 0.8 r r 5.0 v regulator. minimum 10 m f capacitor is required for noise filtering and compensation. it can source up to 20 ma but not sink current. output impedance is 10 w . recommended for use as a voltage reference only.
mc13282a 6 motorola analog ic device data pin function description (continued) pin description equivalent internal circuit name 23 clamp v ref1 10 k v cc 30 k 3.75 v v ref2 this pin is used for video clamping. the threshold clamping level is 3.75 v. 24 blank v ref1 10 k v cc 30 k 1.25 v v ref2 this pin is used for video blanking. the threshold blanking level is 1.25 v. functional description the mc13282a is composed of three video amplifiers, clamping and blanking circuitry with contrast and subcontrast controls and osd interface. each video amplifier is designed to have a 3.0 db bandwidth of 100 mhz with a gain of up to about 5.6 v/v, or 15 db. video input the video input stages are high impedance and designed to accept a maximum signal of 1.0 vpp with 75 w termination (typically) provided externally. during the clamping period, a current is provided to the input capacitor by the clamping circuit which brings the input to a proper dc level (nominal 2.0 v). the blanking and clamping signals are to be provided externally, with their thresholds sitting at 1.25 v and 3.75 v, respectively. video output the video output stages are configured as emitterfollowers, with a driving capability of about 15 ma for each channel. the dc voltage at these three emitters is set to 1.2 v (black level). the dc current through each output stage is determined by the emitter resistor (typically 330 w ). contrast control the contrast control varies the gain of three video amplifiers from a minimum of 0.3 v/v to a maximum of 5.6 v/v when all subcontrast levels are set to 5.0 v. subcontrast control each subcontrast control provides a maximum of 26 db attenuation on each video amplifier separately. osd interface the three osd inputs are ttl compatible and have a typical bandwidth of 50 mhz. a fast commutate pin is provided to select either the video or the osd inputs as the source for the outputs. osd contrast control is also provided to set the amount of gain required when osd inputs are selected. clamp pulse input the clamping pulse is provided externally, and the pulse width must be no less than 500 ns. blank pulse input the blanking pulse is used to blank the video signal during the horizontal sync period, or used as a control pin for video mute function. power supplies v cc and video v cc supplies are to be 8.0 v 5%.
mc13282a 7 motorola analog ic device data figure 2. test circuit 22 19 15 2 4 6 8 10 12 7 24 23 14 17 9 21 18 16 13 11 5 3 1 20 contrast subcontrast control g r input g input b input r osd g osd b osd gnd v5 blank clamp fast commutate osd contrast video v cc v cc r emitter g emitter b emitter r clamp g clamp b clamp mc13282a r1 75 r2 75 r3 75 clamp input osd select 8.0 v c15 0.1 r4 330 r5 330 r6 330 r output g output b output clamp capacitor c11 0.1 c12 0.1 c13 0.1 r input g input b input osd inputs c1 0.1 c2 0.1 c10 0.1 c9 0.1 c8 0.1 c7 0.1 c6 0.1 c14 47 m f blank input c4 0.1 c5 10 m f c3 0.1 video inputs 5.0 v 5.0 v 5.0 v 5.0 v 5.0 v rb application information pcb layout care should be taken in the pcb layout to minimize the noise effects. the most sensitive pins are v cc (9), video v cc (17), v5 (20), clamp (16, 18, 21). it is strongly recommended to make a ground plane and connect v cc /video v cc and ground traces to the power supply directly. separate power supply traces, should be used for v cc and video v cc and decoupling capacitors should be connected as close as possible to the device. multilayer ceramic and tantalum capacitors are recommended. pin 20 (v5) is designed as a 5.0 v voltage reference for contrast, rgb subcontrast and osd contrast controls, so the same precaution for v cc should be also applied at this pin. the clamp capacitors at pins 16,18 and 21 should be connected to ground close to ic's ground pin 7 or power supply ground. the copper trace of the video signal inputs and outputs should be as short as possible and separated by ground traces to avoid any rgb crossinterference. a double sided pcb should be used to optimize the device's performance. rgb input and output the rgb output stages are designed as emitterfollowers to drive the crt driver circuitry directly. the emitter resistors used is 330 w (typically) and the driving current is 15 ma maximum for each channel. the loading impedance connected to the output stages should be greater than 330 w and less than 5.0 pf for optimum performance (e.g., rise/fall time, bandwidth, etc.). decreasing the resistive load will reduce the rise/fall time by increasing the driving current, but the output stage may be damaged due to increasing power dissipation at the same time. the frequency response is affected by the loading capacitance. the typical value is 3.0 to 5.0 pf. figure 4 shows a typical interface with a video output driver. for a high resolution color monitor application, it is recommended to use coaxial cable or shielded cable for input signal connections. clamp and blank input the clamp input is normally (except for syncongreen) connected to a positive horizontal sync pulse, and has a threshold level of 3.75 v. it is used as a timing reference for the dc restoration process, so it cannot be left open. if syncongreen timing mode is used, the clamping pulse should be located at horizontal back porch period instead of horizontal sync tip. otherwise, the black level will be clamped at an incorrect voltage. the blank input is used as a video mute, or horizontal blanking control, and is normally connected to a blanking
mc13282a 8 motorola analog ic device data pulse generated from the flyback or from an mcu. the threshold level of 1.25 v. the blanking pulse width should be equal to the flyback retrace period to make sure that the video signal is blanked properly during retrace. it is necessary to limit the amplitude, and avoid any negative undershoots if the flyback pulse is used. this blanking input pin cannot accept a negative voltage. this pin should be grounded if it is not used. osd interface figure 3 show a typical application with an osd device (mc141540). the mc141540 osd and fc outputs are ttl compatible, and therefore interface directly with mc13282a. level shifting circuitry is not needed. the mc141540 is a digital device, controlled by an mcu. therefore, separate power supply runs to the mc141540 and to the mc13282a are recommended. care should be taken in the pc board layout to prevent digital noise from entering the analog portions of mc13282a. normally the osd switching is done during the active video time. it is recommended that the fast commutate pin not be activated during the horizontal sync time. figure 3. interfacing with osd device c12 47 m f r input g input b input r osd g osd b osd fast commutate osd contrast contrast v cc v5 clamp r clamp g clamp b clamp r contrast b contrast g contrast blank r emitter g emitter b emitter gnd mc13282a video processor with osd interface clamp input blank input ss mosi sck v dd h tone mc141540 on screen display processor v ss v ssa v dda h f/b rp vco v f/b vsyn input hsyn input video v cc 5.0 v 8.0 v vr1 50 k vr2 50 k vr3 50 k g input c1 0.1 c2 0.1 c3 0.1 r1 75 r2 75 r3 75 5.0 v vr5 50 k rgb output c7 47 m f c8 0.1 c9 0.1 c10 0.1 c11 10 m f r5 330 r6 330 r7 330 mcu interface v dda r4 10 r8 470 k r9 5.6 k r10 2.0 k r11 7.5 k c13 0.01 c14 0.1 c15 0.1 c16 100 m f c18 10 m f 5.0 v l1 150 mh c6 0.1 c5 0.1 c4 0.1 5.0 v r osd g osd b osd fast commutate 5.0 v vr4 50 k c17 0.1 r input b input
mc13282a 9 motorola analog ic device data figure 4. interfacing with video output drivers c l crt driver v cc reference voltage c12 47 m f r input g input b input r osd g osd b osd fast commutate osd contrast contrast v cc v5 clamp r clamp g clamp b clamp r contrast b contrast g contrast blank r emitter g emitter b emitter gnd mc13282a video processor with osd interface clamp input blank input video v cc 5.0 v 8.0 v vr1 50 k vr2 50 k vr3 50 k g input c1 0.1 c2 0.1 c3 0.1 vr5 50 k rgb output c9 0.1 c10 0.1 c11 10 m f r5 330 r6 330 r7 330 r4 10 5.0 v osd input and control c7 47 m f c8 0.1 r input b input c6 0.1 c5 0.1 c4 0.1 r1 75 r2 75 r3 75
mc13282a 10 motorola analog ic device data 0 4.5 0 4.5 1.0 0 0 4.5 0 4.5 osd contrast control voltage (v) contrast control voltage (v) attenuation (db) f, frequency (mhz) video output (vpp) subcontrast voltage (v) figure 5. rgb in/out linearity video input (vpp) figure 6. color contrast figure 7. subcontrast control figure 8. osd contrast control figure 9. crosstalk from green to red and blue channels video output (vpp) video output (vpp) video output (vpp) 2.0 2.0 2.0 0.2 4.0 4.0 10 4.0 0.4 0.6 6.0 6.0 100 6.0 0.8 4.0 4.0 10 4.0 4.0 3.5 3.5 30 3.5 3.5 2.5 2.5 50 2.5 3.0 1.5 1.5 1.5 2.0 0.5 0.5 70 0.5 1.0 0 0 80 0 0 2.5 1.5 0.5 3.0 2.0 1.0 3.0 2.0 1.0 3.0 2.0 1.0 20 40 60 blue channel red channel 1000
mc13282a 11 motorola analog ic device data figure 10. rise time figure 11. fall time 100 mv/div 5.0 ns/div 10x probe 100 mv/div 5.0 ns/div 10x probe note: recommended to use a double sided pcb without any socket for rise/fall time measurements, using an input pulse with 1.5 ns rise/fall time and an active probe with 1.7 pf capacitance loading. figure 12. single sided pcb layout (component side) blank clamp r in g in b in r out g out b out osd in rgbfc in vr4 osd contrast vr5 main contrast v cc 8.0 v gnd r3 j6 c10 r4 c8 r2 r1 g vr1 g vr2 g vr3 r7 r6 c13 c4 r5 c11 c16 c12 c17 j1 c6 c1 ic2 c7 c2 c8 c3 c14 c15 j5 j2 j3 r5 j4 note: j = jumper
mc13282a 12 motorola analog ic device data p suffix plastic package case 72403 issue d outline dimensions notes: 1. chamfered contour optional. 2. dimension l to center of leads when formed parallel. 3. dimensioning and tolerancing per ansi y14.5m, 1982. 4. controlling dimension: inch. a b 24 13 12 1 t seating plane 24 pl k e f n c d g m a m 0.25 (0.010) t 24 pl j m b m 0.25 (0.010) t l m note 1 dim min max min max millimeters inches a 1.230 1.265 31.25 32.13 b 0.250 0.270 6.35 6.85 c 0.145 0.175 3.69 4.44 d 0.015 0.020 0.38 0.51 e 0.050 bsc 1.27 bsc f 0.040 0.060 1.02 1.52 g 0.100 bsc 2.54 bsc j 0.007 0.012 0.18 0.30 k 0.110 0.140 2.80 3.55 l 0.300 bsc 7.62 bsc m 0 15 0 15 n 0.020 0.040 0.51 1.01 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 mc13282a/d
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