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TA7611AP
DESCRIPTION
LINEAR INTEGRATED CIRCUIT
FM IF/AM TUNER SYSTEM
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
IF INPUT
6
7
10
11
15 16
IF 1 IF 2 IF 3
9 8
VIDEO AMP.
1
VIDEO TANK
2
AGC2
12
AGC1 NOISE INVERTER
RF AGC OUTPUT
4
AGC3
13
VIDEO OUTPUT
Contek
3
RF AGC RELAY
14
IF AGC FILTER
Contek Microelectronics Co.,Ltd.
CONTEK
http://www.contek-ic.com E-mail:sales@contek-ic.com
1
TA7611AP
PARAMETER
Supply Voltage Open Loop Voltage Video DC Output Current Power Dissipation Operating Temperature Storage Temperature
LINEAR INTEGRATED CIRCUIT
C)
ABSOLUTE MAXIMUM RATINGS(Ta=25
SYMBOL
VCC V4 I12 PD TOPR TSTG
VALUE
15 15 6 1.4 -20 ~ +65 -55 ~ +150
UNIT
V V MA W C C
ELECTRICAL CHARACTERISTICS(Ta=25
PARAMETER
Recommended Supply Voltage Quiescent Circuit Current Video DC Output AFT DC Output Voltage AFT Output Offset 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 Carrier 920KHz Beat Level Differential Gain Differential Phase Input Impedance AFT Output Upper Voltage AFT Output Lower Voltage Maximum Available Current AFT Sensitivity
C, Vcc=12V, fo=45.75MHz, unless otherwise specified)
SYMBOL
VCC ICCQ V12 V5-V6 V5-V6 V4(SAT) I4(LEAK) SVI VAGC (IF) VSYNC VI(MAX) VWTH VWCL VBTH VBCL GV(IF) CL I2ND I920 DG DP RIN CIN V5,V6(UP) V5,V6(LOW) I4(MAX) SAFT
TEST CONDITIONS
MIN. TYP. MAX.
10.8 42 5.2 12 51 5.5 6.8 0 13.2 63 5.8 8.3 1.5 0.5 1 100 60 2.3 100 5.8 3.7 1.4 2.9 200 64 2.5 120 6.2 4.1 1.6 3.3 5.5 50 50 38 7 3.5 10 5 6 5 12 2.8 6.6 4.5 1.8 3.7 2.7 300
UNIT
V mA V V V V mA mVrms dB V mVrms V V V V MHz dB dB dB dB Degree K pF V V mA KHz/V
SW1: on,SW2: on SW1: on,SW2: on SW4:1 VCC=12V,SW3:1,SW4:1 V12=0.8VP-P f0=45.75MHZ,AM=30% VCC=12V,f0=45.75MHZ V14=11.5V 4.0V
5.3 -1.5
Input 45.75MHz, Sweep Generator SG1=100mVrms SG2, SG3->OFF SG1=100Mvrms SG2, SG3->OFF SG1=100mVrms SG2=SG3=32mVrms
4.5 40 40 33
fo=45.75MHz, Between pin16~1
3.0 11.7 1.8 7
4.5 2 11.9 2.3 16
Contek Microelectronics Co.,Ltd.
CONTEK
http://www.contek-ic.com E-mail:sales@contek-ic.com
2
TA7611AP
TEST CIRCUIT 1
5.1k W
LINEAR INTEGRATED CIRCUIT
3.3k W 1 2 3.9k W Vcc=12V
820kW
1.6k W 0.01 mF
0.01 m F
SW4
A
47 mF
0.01 mF
16
0.01 mF
15
14
13
12
11
10
9
Contek
1 2 3
TA7611AP
4 5 6 7 8
0.01 mF
SW1 +15V
0.01 mF
0.01 mF
0.01 mF
0.01 mF
0.01 mF
A
1.6k W SW3
2
1
TEST CIRCUIT 2
VAGC VIDEO OUTPUT Vcc=12V
0.22 mF
1:1 IF INPUT 0.01 mF
2
1 S1
1.6kW
47 mF
820kW
0.01 mF
1000pF
0.01 mF
16
15
14
13
12
11
10
9
3.9kW
75pF
Contek TA7611AP
1 2 3 4 5 6 7 8
1kW 5kW 1kW
1.6kW
SW2
1
2
Contek Microelectronics Co.,Ltd.
CONTEK
http://www.contek-ic.com E-mail:sales@contek-ic.com
3
TA7611AP
TEST CIRCUIT 3
LINEAR INTEGRATED CIRCUIT
TEST CIRCUIT 4
Contek Microelectronics Co.,Ltd.
CONTEK
http://www.contek-ic.com E-mail:sales@contek-ic.com
4
TA7611AP
LINEAR INTEGRATED CIRCUIT
TYPICAL APPLICATION CIRCUIT
Contek Microelectronics Co.,Ltd.
CONTEK
http://www.contek-ic.com E-mail:sales@contek-ic.com
5

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