Contek TA7611AP Datasheet
TA7611AP LINEAR INTEGRATED CIRCUIT
FM IF/AM TUNER SYSTEM
DESCRIPTION
TheContek 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
*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
5 7 10 116
RF AGC
OUTPUT
15
16
1
2
4
Contek
IF 2IF 1 IF 3
IF INPUT
AGC3
RF AGC
RELAY
AGC2
3 14
AGC1
IF AGC FILTER
NCNCNCNC Vcc
VIDEO AMP.
NOISE
INVERTER
DIP-16
9
8
VIDEO
TANK
12
VIDEO
OUTPUT
13
CONTEK
Contek Microelectronics Co.,Ltd.
http://www.contek-ic.com E-mail:sales@contek-ic.com
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TA7611AP 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 I12 6 MA
Power Dissipation PD 1.4 W
Operating Temperature TOPR -20 ~ +65 C
Storage Temperature TSTG -55 ~ +150 C
ELECTRICAL CHARACTERISTICS(Ta=25 C, Vcc=12V, fo=45.75MHz, unless otherwise specified)
PARAMETER SYMBOL 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 V12 5.2 5.5 5.8 V
AFT DC Output Voltage V5-V6 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
RF AGC Leak Current I4(LEAK) VCC=12V,SW3:1,SW4:1 1 mA
Video Sensitivity S
AGC Range VAGC
Sync Tip Level Voltage (pin12) VSYNC 2.3 2.5 2.7 V
Maximum IF Input Voltage VI
White Noise Threshold (pin12) V
White Noise Clamp Level (pin12) V
Black Noise Threshold (pin12) V
Black Noise Clamp Level (pin12) V
Video Frequency Response GV(IF) Input 45.75MHz, Sweep
Suppression of Carrier CL SG1=100mVrms
Suppression of 2ndCarrier I2ND SG1=100Mvrms
920KHz Beat Level I920 SG1=100mVrms
Differential Gain DG 7 10 dB
Differential Phase DP 3.5 5 Degree
Input Impedance RIN
AFT Output Upper Voltage V5,V6(UP) 11.7 11.9 12 V
AFT Output Lower Voltage V5,V6(LOW) 1.8 2.3 2.8 V
Maximum Available Current I4(MAX) 7 mA
AFT Sensitivity S
V4(SAT) SW4:1 0.5 V
(IF)
(MAX)
WTH
WCL
BTH
BCL
CIN
AFT
VI
fo=45.75MHz, Between pin16~1 3.0 4.526
V12=0.8VP-P
f0=45.75MHZ,AM=30%
VCC=12V,f0=45.75MHZ
V14=11.5V 4.0V
Generator
SG2, SG3->OFF
SG2, SG3->OFF
SG2=SG3=32mVrms
100 200 300 mVrms
60 64 dB
100 120 mVrms
5.8 6.2 6.6 V
3.7 4.1 4.5 V
1.4 1.6 1.8 V
2.9 3.3 3.7 V
4.5 5.5 MHz
40 50 dB
40 50 dB
33 38 dB
5
16 KHz/V
K
pF
CONTEK
Contek Microelectronics Co.,Ltd.
http://www.contek-ic.com E-mail:sales@contek-ic.com
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