TA8748AN TOSHIBA | Alldatasheet
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TOSHIBA BIPOLAR LINEAR INTEGRATED CIRCUIT SILICON MONOLITHIC DOUBLE CCD COMB IC FOR TV, VTR The TA8748AN is for double comb filter Y/C separation and vertical edge enhancement using the logic of majority decision. A Due to this logic, the Y/C Separation by this IC have no a dot appearance or color protruding. a - Tht 6 eet Roy UY Prey yee FEATURES fy a ud @ 3 Line Comb Filter Operation © Center Value Detecting Circuit 9 SDIP30-P-400-1.78 @ Vertical Edge Sharpness Correction (Vertical Secondary Weight : 1.99g (Typ.) Differential) @ Vertical Edge Sharpness Correction Level Control @ Edge Sharpness Correction Signal Coring and Peak Clip 961001EBA2 @ TOSHIBA is continually working to improve the quality and the reliability of its products, Nevertheless, semiconductor devices in general can malfunction or fall due to their inherent electrical sensitivity and vulnerability to physical stress. itis the responsibilty of the buyer, when utliing TOSHIBA products, to observe standards of safety, and to avoid situations in which a malfunction or failure of a TOSHIBA product could cause loss of human life, bodily injury or damage to property. In developing your designs, please ensure that TOSHIBA products are used within specified ‘operating rangot as tot forth in the most recent products pecificatione. Alzo, pleaze keep in mind the precautions and conditions tet forth in the TOSHIBA Semiconductor Reliability Handbook. & The products described in this document ae subject to foreign exchange and foreign trade control laws The [Information contained herein is presented only as a guide for ‘the applications, of our products. No responsiblity is assumed by, TOSHIBA CORPORATION for any infringements of intellectual property or other rights of the third parties which may result from its use. No license is granted by implication or otherwise under any intellectual property or other rights of TOSHIBA CORPORATION or others. © The information contained herein is subject to change without notice 1997-11-05 1/17
Syne. er i . Gp Output _4 © Vp Out ky O que Del > Berd <I yy a Bua Gpourout <p cosa 2 | ov : q Sh | 0H Output Fry in B a ae cE a | eee © me <p i ™ MAXIMUM RATINGS (Ta = 25°C) CHARACTERISTIC SYMBOL RATING UNIT Power Supply Voltage [Power Dissipation | Pp max _|1560 (Note 1) Input Terminal Signal Voltage [ein | 5 | Vp» | Operating Temperature | Top | 2065 | °C | Storage Temperature -55~150 (Note 1) When using the device at above Ta=25°C, decrease the power dissipation by 12.5mW for each increase of 1°C. (Note 2) These devices are easy to be damaged by static voltage or electric fields. Please handle with care. 1997-11-05 2/17
ELECTRICAL CHARACTERISTICS (Unless otherwise specified, Vcc =9V, Ta = 25°C) DC voltage characteristics frwino.| _rwname | sympot | rest conomon | win. | rv. [ax | unr Pot [Van Output Py Pe Ts Te TV | [2 |p Output | vee OREN S~d A as a VY [3 [vp input i v3 | SO SSSCS—~i 2 | 0 VY [4 [comb aj _| Va OPN Ss A | a Pw [sine vs ie OY [6 |%1 ouput ve i ss | 7 [coutput Tv 8 8 Pt TV Pe |¥2 Output | ve |S SSS—~d 2 Pa a | a P10 fe a Pe a Po [fee a Pe a a p12 [fea Pe a Pa | 13 [fea Output | Vag P| 8 BT at | | 14 [fe Output | Vig PS |B aT VV | 15 [fcc Output | as PS 8 Tw Tat | | pte [Bias Tg Pa Tt fos | P17 [fea Ta PO 5 8G TV P18 [fea Tag PS 5 a 5G | | | 19 [fon | ig OP CO | 54 | 56 | | 20 [comb sw | V20 ef OPEN | | os | | | 21 [fer Output van Pe a | p22 fer |e Pe Ts Te TT p23 fend a | 24 [oH Output Tag Pe a a P25 [Von Ts PO 5 SS TV p26 [Vay Tg 5 ST p27 [Vin er 5 ST | P28 Van Tg P55 YT | p29 [vee P= 8 P= Tv | 30 [Vp Output | Vg | | a P29 Vee ag sa ema 9997-19-05 3/17
CHARACTERISTIC SYMBOL | CIR-| TEST CONDITION TYP. | MAX. | UNIT CUIT (1) OFA Lis i9| 20] 19dB Amp Gain [(2) 1H98 (Note) = [475] 19 [20 | (3) 2H L7s[ 19 [20 | [ wf— | — | Pb Amp Frequency (a) THB | fe _| Characteristic (2) 1H>B fo (Note 2) [ 1o/ — | — | MHz G) 2H [wf — | — | [500 [600 [| mae Amp Input (a) 138 (note 3) [500 [600 [ — | mVp-p Dynamic Range Center Value Circuit Gain | Geout__| — | (Note 4) [ -8.0 | -65 | -5.0| dB | Center Value Circuit Frequency Characteristics feout (Note 5) MHz Offset Leak Level (1) out fc F if | — | (Note 6) Pett vin | [asp— | —| Center Value Circuit L—- |—| 7] Input Dynamic Range |fs- 8 | _Vofb _| (Note7) = [-— | — [70 |m\\pp Center Value Circuit oa ofc | — | = | out fg: Leak Level a (Notes) = [-— | — | 50|m\\pp Tout OH [-s;— | — | ChromaVide chroma Video (note 10) [=30[ — | — | [=s0[ — | — | [comb SW Switching Voltage | Vsw |—| (ote | 27] 36] a0] v | [=25[-05| 05 | cea} Amp Max. Gain (Note 12) [E25 [-05] 05] [=75 | -65 | -55| Cadj Amp Center Gain (Note 13) [=75[-65 | -55 | - Ni 14) Cadj Amp Min. Gain Woe) [= T= 50] Cadj Amp Frequency | wf —|— | noes 7 (Note 15) MHz Cadj Amp Input woe ty 2 — f=] Dynamic Range L45[— | — | 1997-11-05 4/17
CHARACTERISTIC SYMBOL | CIR-| TEST CONDITION TYP. | MAX. | UNIT CUIT [Soo [30 6070] fonmmaeon fa BBL | anim ET a vim con peat St Tae PPR ET Do d 6 1V2H Input Gain [Vp out | Gyd2 | — | (Note 20) -7.5 | -60] -55 | aB | VoH Input Frequency (Note 21) 29 = | = TF gn, Vu Input Frequency ViH Input Frequency (Note 23) | {= 1 = | Characteristics {| tof — | — | [V2H Input Frequency [Vp out | fyd2 [| — | (Note 24) | to [| — [| — | mie | VoH Input Dynamic (Note 25) | 15| — | — | V, Vy Input Dynamic . range camcrsics [Hout | vow || ote | 09] — | - | woo rage Fae age [ neem BE tS foe range [voour | vax [=| ote | 25] — | = | veo Coring Peak Clip Level [| Vea | — | (Note 29) | 50 [90 | 150 | mv | Coring Cutoff Level [| Veut [| — | (Note 30) | 10] 125] 15] mv | |Coring Cutoff set | ote =| — | (Note 31) | -10 | of 10 | mv | | os] 15] 50] Vp Max. Gain [Vp | Gia (Note 32) | _ 95] 11.5] 125 | Peak Clip [| 65] 85] 95 | [Vp Center Gain | GT Tote 33) | 40 | 60] 80] ab | [Vp Min.Gain | Gyap T ~ | (Note 34) | — | — | 60] ae | [Vp Amp Frequency Characteristics | fya___ | — | (Note 35) | 10 | — [| — | Mie | [Vp Amp Dynamic Range | Viva =| — | (Note 36) | 1.2 | — | — | Vpo | Vin Amp Gain | Gy S|] ~ | Note 37) | 75] 85] 95] ab | Vin Amp Frequency fitaaeinc |e |= | ores | ro] — | = [| [Vin Amp Dynamic Range | Vidi ~— | — | (Note 39) | 1.2 | — | — | Vp | Video Cross ote 4) LS — 1 — | Chroma (Note 41) |_ 55 { — [= | Crosstalk [=s0>— [— | [-40] — | — | 9997-11-05 5/17
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DOUBLE COMB FILTER UNIT ADJUSTMENT 1. Initial Condition Input Signal : Linearity Signal 2Vp-p fsc Signal : 1Vp-p VR : RB51~58 : Center 2. Input Signal Amplitude Adjust RB57 to make signal Amplitude at QB05 emitter by Vp-p: 3. Amplitude, Phase of 1H Delay Signal Sum up TA8748AN pin 12 Signal and reversed pin 11 Signal with Oscilloscope. Adjust RB51 and RB52 mutually to make this summed signal be minimum level. 4. Amplitude, Phase of 2H Delay Signal Sum up TA8748AN pin 10 Signal and reversed pin 11 Signal with Oscilloscope. Adjust RB53 and RB54 mutually to make this summed signal be minimum level. 5. Vertical edge Enhance Signal Adjust RB58 to make pin 30 signal be minimum level. 6. Comb Filter Gain, Phase Monitor Yout- Adjust RB55 and RB56 mutually to make Chroma element be minimum level. 7. Yout Amplitude Adjust RB57 to make the amplitude of Yout Video (without SYNC) to be 1.43Vp-p. 9997-11-05 16/17
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