TA7611AP LINEAR INTEGRATED CIRCUIT FM IF/AM TUNER SYSTEM DESCRIPTION The Contek TA7611AP is a monolithic integrated circuit, designed for the VIF stage in color and B/W TV receiver. The UTC TA7611AP is used for Forward AGC type. FEATURES *High gain wide brand IF amplifier *Gain reduction with excellent stability *Excellent DG/DP and S/N characteristics *Negative video output signal *Fast AGC action due to noise inverter and peak AGC *Switch off the video part VTR SW FUNCTIONS DIP-16 *Three controlled IF amplifier stages *Video demodulator controlled by picture carrier *Black noise and white noise inverter *Peak AGC *DC amplifier for RF AGC output *Quadrature detector for AFT *DC amplifier for AFT BLOCK DIAGRAM NC NC NC NC Vcc 5 6 7 10 11 15 IF INPUT 9 16 IF 1 IF 2 IF 3 1 8 VIDEO TANK VIDEO AMP. 2 12 AGC2 RF AGC OUTPUT 4 AGC3 AGC1 NOISE INVERTER Contek 3 RF AGC RELAY 14 13 VIDEO OUTPUT IF AGC FILTER Contek Microelectronics Co.,Ltd. CONTEK http://www.contek-ic.com E-mail:[email protected] 1 TA7611AP LINEAR INTEGRATED CIRCUIT ABSOLUTE MAXIMUM RATINGS (Ta=25 PARAMETER Supply Voltage Open Loop Voltage Video DC Output Current Power Dissipation Operating Temperature Storage Temperature C) SYMBOL VALUE UNIT VCC 15 15 6 1.4 -20 ~ +65 -55 ~ +150 V V MA W C C V4 I12 PD TOPR TSTG ELECTRICAL CHARACTERISTICS(Ta=25 PARAMETER SYMBOL C, Vcc=12V, fo=45.75MHz, unless otherwise specified) TEST CONDITIONS MIN. TYP. MAX. UNIT Recommended Supply Voltage VCC 10.8 12 13.2 V Quiescent Circuit Current ICCQ 42 51 63 mA Video DC Output 5.2 5.5 5.8 V AFT DC Output Voltage V5-V6 V12 SW1: on,SW2: on 5.3 6.8 8.3 V AFT Output Offset Voltage V5-V6 SW1: on,SW2: on -1.5 0 1.5 V RF AGC Residual Output Voltage V4(SAT) SW4:1 0.5 V RF AGC Leak Current I4(LEAK) VCC=12V,SW3:1,SW4:1 SVI V12=0.8VP-P f0=45.75MHZ,AM=30% 100 200 AGC Range VAGC (IF) VCC=12V,f0=45.75MHZ V14=11.5V 4.0V 60 64 Sync Tip Level Voltage (pin12) Video Sensitivity 1 mA 300 mVrms dB VSYNC 2.3 2.5 Maximum IF Input Voltage VI(MAX) 100 120 White Noise Threshold (pin12) VWTH 5.8 6.2 6.6 V White Noise Clamp Level (pin12) VWCL 3.7 4.1 4.5 V Black Noise Threshold (pin12) VBTH 1.4 1.6 1.8 V Black Noise Clamp Level (pin12) VBCL 2.9 3.3 3.7 Video Frequency Response 2.7 V mVrms V GV(IF) Input 45.75MHz, Sweep Generator 4.5 5.5 MHz CL SG1=100mVrms SG2, SG3->OFF 40 50 dB Suppression of 2 nd Carrier I2ND SG1=100Mvrms SG2, SG3->OFF 40 50 dB 920KHz Beat Level I920 SG1=100mVrms SG2=SG3=32mVrms 33 38 dB Differential Gain DG 7 10 dB Differential Phase DP 3.5 5 Degree Input Impedance RIN CIN 3.0 4.5 2 6 5 K pF V Suppression of Carrier fo=45.75MHz, Between pin16~1 AFT Output Upper Voltage V5,V6(UP) 11.7 11.9 12 AFT Output Lower Voltage V5,V6(LOW) 1.8 2.3 2.8 Maximum Available Current I4(MAX) 7 AFT Sensitivity SAFT 16 Contek Microelectronics Co.,Ltd. CONTEK V mA http://www.contek-ic.com E-mail:[email protected] KHz/V 2 TA7611AP LINEAR INTEGRATED CIRCUIT TEST CIRCUIT 1 3.9k W 1 2 SW4 0.01 m F 1.6k W 0.01 mF 16 15 14 0.01 mF 0.01 mF 12 11 10 9 TA7611AP 3 4 SW1 5 6 7 0.01 mF 2 0.01 mF 1 47 mF A 0.01 mF 13 Contek 0.01 mF Vcc=12V 0.01 mF 3.3k W 820kW 5.1k W 8 0.01 mF 1.6k W A 2 SW3 1 +15V TEST CIRCUIT 2 VIDEO OUTPUT 1 S1 47 mF 1kW 5kW 1kW 16 15 0.01 mF 14 13 12 11 10 9 6 7 8 Contek TA7611AP 1 2 1.6kW 3 4 SW2 5 1 2 Contek Microelectronics Co.,Ltd. CONTEK 75pF 0.01 mF 1000pF 820kW 0.01 mF Vcc=12V 3.9kW 2 IF INPUT 0.22 mF 1:1 1.6kW VAGC http://www.contek-ic.com E-mail:[email protected] 3 TA7611AP LINEAR INTEGRATED CIRCUIT TEST CIRCUIT 3 TEST CIRCUIT 4 Contek Microelectronics Co.,Ltd. CONTEK http://www.contek-ic.com E-mail:[email protected] 4 TA7611AP LINEAR INTEGRATED CIRCUIT TYPICAL APPLICATION CIRCUIT Contek Microelectronics Co.,Ltd. CONTEK http://www.contek-ic.com E-mail:[email protected] 5