TA7678 - Unisonic Technologies

TA7678 LINEAR INTEGRATED CIRCUIT

The Contek TA7678 is a monolithic integrated circuit designed for the VIF and SIF stage in B/W television receivers. The UTC TA7678 is used for forward AGC Type. FEATURE VIF STAGE *High gain wide brand IF amplifier 50dB at 45MHz *Gain reduction with excellent stability: 55dB at 45MHz *Excellent DG/DP and S/N characteristics DIP-16 SIF STAGE *Excellent lim.

Features

L CHARACTERISTICS(Ta=25 PARAMETER Recommended Supply Voltage Quiescent circuit current Video DC output Terminal 5 voltage Terminal 7 voltage RF AGC Residual Output Voltage RF AGC Leak Current Video sensitivity AGC Range Sync Tip Level Voltage (pin12) Maximum IF Input Voltage White Noise Threshold (pin12) White Noise Clamp Level (pin12) Black Noise Threshold (pin12) Black Noise Clamp Level (pin12) Video Frequency Response Suppression of carrier Suppression of 2 nd C,Vcc=12V,fp=45.75MHz,unless otherwise specified) TEST CIRCUIT 1 1 1 1 1 1 2 2 2 2 2 2 2 2 3 4 SYMBOL Vcc Iccq V12 V5 V5 V4(sat) .