Various ta7678 free download

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TA7678 LINEAR INTEGRATED CIRCUIT VIDEO AND SOUND IF AMPLIFIER FOR MONOCHROME TV RECEIVERS DESCRIPTION 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 DIP-16 *Excellent DG/DP and S/N characteristics SIF STAGE *Excellent limiter characteristics *Excellent AM Rejection *Large undistorted audio output voltage with quadrature detector BLOCK DIAGRAM Contek Contek Microelectronics Co.,Ltd. 1 http://www.contek-ic.com E-mail:[email protected] CONTEK TA7678 LINEAR INTEGRATED CIRCUIT ABSOLUTE MAXIMUM RATINGS (Ta=25 C) PARAMETER SYMBOL VALUE UNIT Supply Voltage Vcc 15 V Open Loop Voltage V4 15 V Video DC output current (note) V12 6 V Operating Temperature Topr -20 to +65 C Storage Temperature Tstg -55 to 155 C Power dissipation PD 1.4 W ELECTRICAL CHARACTERISTICS(Ta=25 C,Vcc=12V,fp=45.75MHz,unless otherwise specified) PARAMETER TEST SYMBOL TEST CONDITIONS MIN. TYP. MAX. UNIT CIRCUIT Recommended Supply Voltage Vcc 10.8 12 13.2 V Quiescent circuit current 1 Iccq S1:ON,S3:2,S5:2,S4:1 35 50 65 mA Video DC output 1 V12 S1:OFF,S3:2,S5:2,S4:1 5.2 5.5 5.8 V Terminal 5 voltage 1 V5 S1:ON,S3:2,S5:2,S4:1 3.5 4.4 5.3 V Terminal 7 voltage 1 V5 S1:ON,S3:2,S5:2,S4:1 4.6 6.0 7.2 V RF AGC Residual Output Voltage 1 V4(sat) S1:OFF,S3:2,S5:2,S4:1 0.5 V RF AGC Leak Current 1 I4(leak) S1:OFF,S3:1,S5:2,S4:1 1 mA Video sensitivity