TCA270S

TCA270S PHILIPS | Alldatasheet

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TELEVISION SIGNAL PROCESSING CIRCUIT ‘The TCA270S isa monolithic integrated circuit combining the following functions: = synchronous dernodulator - video amplifier with buffer output stages - noise inverters -A.G.C. detector with output stages for n-p-n tuner and i.f, amplifier - A.F.C. demodulator with buffer output stage Opposite polarity video signals are available from emitter followers, the negative-going signal being matched to integrated circuit type TBA920, QUICK REFERENCE DATA Supply voltage V3 -16 nom, 2 OV ; Ambient temperature Tamb typ. 2 «69 E Frequency f typ. 38,9 MHz | 3 ‘Supply current 13 typ. 47) mA | : Video output voitage (peak value) Vo-16M typ. a ov | Bandwidth (3 4B) B typ. 5 MHz | Intermodulation products (blue colour bar) 1, 1 MHz with respect to B-W level typ. 60 B 3,3 MHz with respect to B-W level typ. -67 «cB A.F.C, output control voltage swing (peak-to-peak value) Vir-16(p-p) > 10 Vv ; A.G.C. control current for a-p-n if. (pin 4) Ty > 10 mA A.G.C. control current for tuner (pin 5) Is > 10. mA PACKAGE OUTLINES TCA270S : 16-lead DIL; plastic (SOT-38). ‘TCA270SQ: 16-lead QiL; plastic (SOT-58). January 1980 Gq}

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RATINGS Limiting values in accordance with the Absolute Maximum System (IBC134) Supply voltage curing switch on (t = 10 s) V3-16 max. oY Power dissipation Prot max. 1 ow ‘Temperatures Storage temperature Tstg 5504125 °C Operating ambicut temperature Tamb -25to +55 °C CHARACTERISTICS : typ. 12,0 Supply voltage range V3-16 1020138 V current vange L typ. 47 mA Supply current range 1g 33 to 62 mA D.C, output voltage (zero signal; pin 9) Vo-16 typ. 6 ov D.C. output voltage (zero signal; pin 10) Vio-16 typ. 6 ov D.C, output voltage at start of a.g.c. (pin 9) Vong typ 30+ ; . y typ. 70 mV i Input resistance at pin 1 Ry 16 typ. 3 kQ E Input resistance at pin 2 Ry-16 typ. 3 kO : Bandwidth (3 dB) of video output B typ. 5 MHz Differential gain < w & 3) Differential phase < w 8 4) Intermodulation products (blue colour bar} 1,1. MHz typ. 60 eB . 3,3 MHz typ. 67. B Cartier frequency rejection at pins 9, 10 and 11 > 40 ab Twice carrier frequency rejection at pins 9, 10 and 11 > 40 GB Ty GGIR system of modulation, peak of white signal = 10% of carrier. wd November 1976

CHARACTERISTICS (continued) A.G.C, circuit Saturation voltage of tuner contzol at 10 mA (pin 4) Vy-i3sar_ < 03° ¥ Saturation voltage of i.f. control at 10 mA (pin5) Vsq3gar_ 7 to1,2 Breakdown voltage at 1 mA (pins 4 and 5) Voor 4-13) 5 “oy (BR)5-13) Control current at pins 4 and 5 Tg ls > 10 mA Signal expansion for complete a.g.c. « 05° dB A.G.C, gating (optional) by negative line flyback pulse; input Voltage (peak -to -peak . > Vv value) Yip-p) << supply voltage input resistance Ri typ. 1,8 kQ Current ratio of unsaturated outputs (pins 4 and 5) at 15 =1 mA a > 6 . 15 3 A.F.C. circuit Output control voltage swing (peak-to-peak value) Vy] -46¢p-p) > 10 OV : Change of frequency for complete output voltage swing < 400 kHz Change of frequency to maintain peak output voltage > +1 MHz Noise inverters 1) Negative-goingnoise pulses in pin 9 inversion threshold typ. 2,55 V : Positive-going noise pulses in pin 9 ; inversion threshold typ. 66 Ty Noise pulses are inverted to a point near black level. November 1976 | 6/

APPLICATION INFORMATION

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