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| UTC PC1366 LINEAR INTEGRATED CIRCUIT B/W TV VIF PROCESSING CIRCUIT DESCRIPTION UTC PC1366 is designed for B/W TV VIF processing purpose. It includes VIF amplifiervideo low level detector RF AGC, IF AGC and noise reduction circuit. FEATURES *High input sensitivity Typ.30dB. *Key and peak controllable AGC. *Operating voltage down to 7V. *Wide video bandwidth suitable for modulation IF of 4.5, 5.5,6.0,6.5 MHZ. *Differential input implied with easy used with SAW *Low external part count. DIP-14H BLOCK DIAGRAM Rf?AGC voltage regulator AGC Key time control constant pulse input 4 2 RF?AGC to tuner 6 IF power Vcc 7 5 12 RF AGC IF AGC Noise reduction Video output 3 Video output IF amplifier Low level detector 8 9 10 Cap 11 1 14 13 GND saw filter Video IF input Detector coil UTC UNISONIC TECHNOLOGIES CO., LTD. 1 QW-R111-003,A UTC PC1366 LINEAR INTEGRATED CIRCUIT ABSOLUTE MAXIMUN RATING(Ta=25C) PARAMETER Supply Voltage Output Current Power Dissipation Operating Temperature Storage Temperature SYMBOL VCC IP-P PD TOPR TSTG VALUE 15 3 875(Ta=75C)With heat sink -20 ~ +70 -40 ~ +125 UNIT V VP-P W C C ELECTRICAL CHARACTERISTICS(Ta=25C,VCC=12V,fP=38MHZ,fm=400HZ) PARAMETER Total Supply Current Input Sensitivity Max Input Voltage Video Output Voltage Video Output DC Voltage S/N Ratio RF AGC Voltage(Hi) RF AGC Voltage(Lo) Differential Gain Differential Phase Video Detector Bandwidth Input Impedance Input Capacitance SYMBOL ICC SVI VI(MAX) VO VO(DC) S/N V6H V6L D.G. D.P. GV(F) RIN CIN TEST CONDITIONS I7+I12,RA=150 Modulation=80%, VO=1.4VP-P Modulation=80%,-1dB Modulation=80%,VI=3mVrms No signal Modulation=80%-0%, VI=3mVrms V5=0V V5=7V Step signal,fM=4.43MHZ Step signal,fM=4.43MHZ -3dB point MIN 40 TYP 50 30 MAX 60 35 UNIT mA dB dB 100 1.0 3.3 40 8 1.4 3.8 50 9 0 11 0.5 10 10 5.5 1.5 3.3 1.7 4.3 VP-P V dB V V % deg MHZ K pF UTC UNISONIC TECHNOLOGIES CO., LTD. 2 QW-R111-003,A UTC PC1366 LINEAR INTEGRATED CIRCUIT APPLICATION CIRCUIT 20k 820 0.22 F 20k RF?AGC voltage ( to tuner ) +B 12V 12pF Audio IF output Video output 220 0.01 F 0.01 F 7 56 6 5 4 3 2 1 680 RF AGC IF AGC 6.8k 180 Noise reduction Low level detector saw filter 222 F 120 222 F Input 22pF IF amplifier 8 9 0.01 F Video Amplifier 11 12 0.01 F 47 F Detector coil 1.5k 10 0.01 F 13 14 222 F 150 Note(Pin 2 GND to have peak AGC) TEST CIRCUIT Vcc 12V 0.01 F 0.22 F 470k SW3 AGC 10k B 0.01 F 0.01 F 150 47F 47 F 100 1k A B V A B A IDS A 1k 6.8k 0.01 F M Video output 5 6 4 2 12 7 3 UTC PC1366 8 0.01 F 0.01 F 9 10 0.01 F 11 0.01 F 1 600 14 13 22pF 38MHz Detector coil UTC UNISONIC TECHNOLOGIES CO., LTD. 3 QW-R111-003,A UTC PC1366 LINEAR INTEGRATED CIRCUIT TYPICAL PERFORMANCE CHARACTERISTICS Input sensitivity curve Video detector output attenuation ATT (dB) Video detector output attenuation vs frequency Input sensitivity i(sense)(dBu) 80 70 60 50 40 30 20 10 0 0 5 10 15 20 fp=38MHz,fm=400MHz MOD=80%,Ra=150 0 fp=38MHz MOD=40% Vi=3mVrms -5 -10 -15 0.01 0.1 1.0 10.0 100.0 Power supply voltage(Vcc) Frequency (MHz) S/N vs input voltage 10 2.0 Video detector output vs power supply voltage 20 Video detector output voltage(Vp-p) S/N ratio(dB) fp=38MHz,fm=400MHz MOD=80%-0%, Vi=3mVrms, Ra=150 1.6 fp=38MHz,fm=400MHz MOD=80%,Ra=150 30 40 1.2 0.8 50 0.4 0 0 20 40 60 60 Input voltage Vi(dBu) 80 100 0 4 8 12 16 20 Power supply voltage Vcc(V) UTC UNISONIC TECHNOLOGIES CO., LTD. 4 QW-R111-003,A |
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