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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)
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)