NTE1747 Integrated Circuit TV Video Processing Circuit Description: The NTE1747 is an integrated circuit in a 28–Lead DIP type package designed for color TV video and chrominance signal processing circuit. Features: D Including Video and Chrominance Signal Processing Circuit on a Single Chip, for Compact Set Design D Including Circuit For Compensating Skin Color Absolute Maximum Ratings: (TA = +25°C unless otherwise specified) Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +14.4V Circuit Voltage, V2,3,10,11–12,19,20,28–9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0V to +14.4V Circuit Current, I25,26,27,28,29 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –40mA to 0mA Power Dissipation, PD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1200mW Operating Ambient Temperature Range, Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –20° to +70°C Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –55° to +150°C Electrical Characteristics: (TA = +25°C unless otherwise specified) Parameter Total Circuit Current Symbol Itot Test Conditions Min Typ Max Unit VCC = 12V 40 54 67 mA Demodulation Color Difference Output Voltage eo(max) Rainbow 150mVP–P, Contrast Max., Color Max. 4.6 5.3 6.0 Vp–p Demodulation Color Difference Output Voltage eo(typ) Rainbow 150mVP–P, Contrast Max., Color Typ. 1.35 1.75 2.15 Vp–p ACC Characteristics ACC Rainbow 15mVP–P, ACC–eo Typ 0.65 0.88 1.05 times Oscillation Frequency fosc Difference between Pin8 input invalid signal & standard sample – – ±150 Hz – – 120 Hz 0 1.5 2.5 Hz/deg. 1.9 2.5 3.2 Hz.mV fosc Change with Supply Voltage fosc Change with Ambient Temperature Control Sensitivity Dfosc/VCC VCC = 12V ±20%, for VCC = 12V Dfosc/TA b TA = –20° to +70°C, for TA = +25°C Change to Pin18 Df when V1 (8.6V) and V2 (8.2V) are applied to Pin15. Electrical Characteristics (Cont’d): (TA = +25°C unless otherwise specified) Parameter Symbol Test Conditions Min Typ Max Unit Phase Detector µ Apply D0–changed frequency for burst phase to Pin18. 27 46 64 mV/deg Phase Hold Characteristics Df Df = 1 (m.b) x 100 – 1.0 1.6 deg/ 100Hz APC Pull–in Range fAPC Rainbow 150mVP–P measured by changing burst frequency ±550 ±800 – Hz Demodulation Output Ratio R/B Demodulator input 0.5VP–P, f = 3.59MHz 0.84 0.93 1.02 times Demodulation Output Ratio G/B Demodulator input 0.5VP–P, f = 3.59MHz 0.25 0.29 0.33 times Demodulation Angle <R Demodulator input 0.5VP–P, f = 3.59MHz, LB = 0dg 86.5 90.0 94.5 deg. Demodulation Angle <G Demodulator input 0.5VP–P, f = 3.59MHz, LB = 0dg 229 236 243 deg. Color Killer Level ek Attenuation from rainbow 150mVP–P (=0dB) to killer operation –35 –40 –45 dB AV1 Sine wave input 0.3VP–P at 20kHz, contrast max., picture min. 7.0 7.7 8.4 times AV2 Sine wave input 0.3VP–P at 20kHz, contrast 75% 6.3 7.0 7.6 times DC Transfer Rate TDC Video input 0.5VP–P (stair step), APL10 % to 90%. Contrast max. Picture min. 86.0 90.5 95.0 % Differential Gain DG Video input 0.5Vp–p (stair step), APL10 ∼ 90%. Contrast max. picture min. – – 5 % Video Voltage Amplification Demodulation DC Output Voltage EO(DC) Input invalid signal, VCO oscillation, demodulator outputs 7.20 7.60 8.05 V DC Voltage Difference Between Demodulation Outputs DEX–Y Differential voltage of demodulator outputs – – 300 mV – 0 ±60 mV – 0 ±60 mV DEO Change with Supply Voltage DEX–Y/VC VCC = 12V ± 20%, for VCC = 12V DEO Change with Ambient Temperature DEX–Y/TA TA = –20 ∼ +70°C. for TA = +25°C AIC Switching Level C VSW f = 3.58MHz, Pin21 level when Pin 0 = 10V 160 260 340 mVp–p GVchroma Chroma/Burst 350/150mVP–P, Phase 123 1.6 2.2 2.7 Vp–p AIC Voltage Gain GvAIC Chroma/Burst 200/150mVP–P, Phase 123’ color killer OFF 14.5 19.0 23.5 dB AIC Sensitivity SAIC Chroma/Burst 300/100mVP–P, Phase 0 tint center 0.7 1.15 1.5 Vp–p Chroma Voltage Gain Phase Compensation Center Q0 115 123 134 deg. Phase Compensation Range Qc1 100 112 124 deg. Phase Compensation Range Qc2 Chroma/Burst 150mVP–P –108 –120 –132 deg. Phase Compensations Quantity QQ1 Color Compensation ON 17 21.5 26 deg. Phase Compensations Quantity QQ2 –18 –22.5 –28 deg. QQmax1 51 59 67 deg. QQmax2 –55 –63 –71 deg. Max. Phase Compensation Quantity Pin Connection Diagram Pedestal Clamp Filter Brightness Control Contrast Control Blank Level Filter Video Signal Input (1) Video Signal Input (2) Chrominance Signal Bypass Chrominance Signal Input GND Color Control Tint Control Burst Gate Pulse Input VCC ACC Filter 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 14 1 15 28 Picture Control B – Y Demod Output G – Y Demod Output R – Y Demod Output VCO Filter Video Signal Output VCO Filter AIC Input Blanking Pulse Input AIC Color Compensation Switch VCO Input VCO Output Color Killer Filter APC Filter 1.469 (37.32) Max .540 (13.7) .250 (6.35) .100 (2.54) 1.300 (33.02) .122 (3.1) Min .600 (15.24)