D7678

Silicore VIDEO AND SOUND IF AMPLIFIER FOR COLOR AND MONOCHROME TV RECEIVERS CHMC FUNCTION P I F S TA G E z z z z z Three Controlled IF Amplifier stages Vi d e o D e m o d u l a t o r C o n t r o l l e d b y P i c t u r e D7678 Carrier Black Noise and White Noise Inverter Peak AGC DC Amplifier for RF AGC Output S I F S TA G E z z Three Controlled IF Amplifier Stages Quadrature Detector Outline Drawing F E AT U R E P I F S TA G E z z z z z z z H i g h G a i n , Wi d e B a n d I F A m p l i f i e r : 5 0 d B ( Ty p . ) a t 5 8 M H z G a i n R e d u c t i o n w i t h E x c e l l e n t St a b i l i t y : 5 5 d B ( Ty p . ) a t 5 8 M H z E x c e l l e n t D G / D P C h a r a c t e r i s t i c s : D G 7 % ( Ty p . ) , D P 3 . 5 d e g . ( Ty p . ) Excellent S/N Characteristics Due to Delayed 3 Stage AGC Action. Fast AGC Action Due to Noise Inverter and Peak AGC. S w i t c h O f f t h e Vi d e o p a r t w i t h V T R S w i t c h . Dual Differential AFT Output. S I F S TA G E z z z Excellent Limiter Characteristics. Excellent AM Rejection. L a rg e U n d i s t o r t e d A u d i o O u t p u t Vo l t a g e w i t h Q u a d r a t u r e D e t e c t o r. SHAOXING SILICORE TECHNOLOGY CO.,LTD www. Silicore. com. cn 1/13 CHMC Silicore PIN CONNECTION D7678 IF IN 1 FIL 2 RFAGC CON 3 RFAGC OUT 4 SIF IN 5 SIF TA 6 OUT AF 7 IF TA 8 9 IF TA 10 SIF TA 11 Vcc 12 VF OUT 13 GND 14 AGC FIL 15 FIL 16 IF IN BLOCK DIAGRAM 11 5 6 BIAS CIRCUIT LIMITER 15 16 1 2 1nd IF 2nd IF 3nd IF LIMITER SOUND D...