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NTE1266 Integrated Circuit Color AGC Circuit for VCR Absolute Maximum Ratings: (T A = +25°C unless otherwise specified) Supply Voltage (V 2–12 ), V CC 14.4V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Supply Current, I CC 42.5mA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Power Dissipation, P D 540mW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Operating Temperature Range, T opr –20° to +70°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Storage Temperatue Range, T stg –40° to +150°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Electrical Characteristics: (V CC = 12V, T A = +25°C unless otherwise specified) Parameter Symbol Test Conditions Min Typ Max Unit Total Circuit Current I tot 26.5 33.0 40.7 mA Input Bias Voltage V 13–12 1.85 V AGC Amp Output Voltage V O(AGC1) V CHROMA = 225mV P–P (0dB) 218 290 390 mV P–P AGC Characteristics V O(AGC2) –20dB 195 260 348 mV P–P V O(AGC3) +6dB 225 300 400 mV P–P Burst Gate Level V (Burst) V 1 Sawtooth 3V P–P , f = 10kHz 1.3 1.65 1.9 V BM Carrier Suppression SC V 3 = 133mV rms , V 5 = 52mV rms 35 45 dB Killer Amp Output Voltage G KILLER V 9–12 = 142mV rms 1.1 1.37 1.64 V P–P Killer Operation Level K gate DC measuring 1.1 1.4 1.7 V (DC)

NTE1266 Integrated Circuit Color AGC Circuit for VCR fileGND VCC Pin Connection Diagram AGC Detector AGC Output Level Control Balance Modulator Output Bypass Killer Amp Output Killer

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Page 1: NTE1266 Integrated Circuit Color AGC Circuit for VCR fileGND VCC Pin Connection Diagram AGC Detector AGC Output Level Control Balance Modulator Output Bypass Killer Amp Output Killer

NTE1266Integrated Circuit

Color AGC Circuit for VCR

Absolute Maximum Ratings: (TA = +25°C unless otherwise specified)Supply Voltage (V2–12), VCC 14.4V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Supply Current, ICC 42.5mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Power Dissipation, PD 540mW. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Operating Temperature Range, Topr –20° to +70°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Storage Temperatue Range, Tstg –40° to +150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Electrical Characteristics: (VCC = 12V, TA = +25°C unless otherwise specified)

Parameter Symbol Test Conditions Min Typ Max Unit

Total Circuit Current Itot 26.5 33.0 40.7 mA

Input Bias Voltage V13–12 – 1.85 – V

AGC Amp Output Voltage VO(AGC1) VCHROMA = 225mVP–P (0dB) 218 290 390 mVP–P

AGC Characteristics VO(AGC2) –20dB 195 260 348 mVP–P

VO(AGC3) +6dB 225 300 400 mVP–P

Burst Gate Level V(Burst) V1 Sawtooth 3VP–P, f = 10kHz 1.3 1.65 1.9 V

BM Carrier Suppression SC V3 = 133mVrms, V5 = 52mVrms 35 45 – dB

Killer Amp Output Voltage GKILLER V9–12 = 142mVrms 1.1 1.37 1.64 VP–P

Killer Operation Level Kgate DC measuring 1.1 1.4 1.7 V(DC)

Page 2: NTE1266 Integrated Circuit Color AGC Circuit for VCR fileGND VCC Pin Connection Diagram AGC Detector AGC Output Level Control Balance Modulator Output Bypass Killer Amp Output Killer

GND

VCC

Pin Connection Diagram

AGC Detector

AGC Output

Level Control

Balance Modulator Output

Bypass

Killer Amp Output

Killer Amp Input

1

2

3

4

Burst Gate Input

Balance Modulator Input

5Balance Modulator Input

6Killer Amp Input

7

8

16

15

14

13

Burst Gate Input

AGC Input

12

11

10

9

Burst Gate Output

.260 (6.6) Max

16 9

1 8

.785 (19.9) Max

.200 (5.08)Max

.245(6.22)Min

.300 (7.62)

.700 (17.7)

.100 (2.54)