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NTE738 Datasheet, PDF (1/2 Pages) NTE Electronics – Integrated Circuit Color TV Processing Circuit
NTE738
Integrated Circuit
Color TV Processing Circuit
Description:
The NTE738 is a chroma IF amplifier with automatic chroma control, color killer, dc chroma control,
and injection lock reference system followed by dc hue control.
Features:
D Minimum Number of External Components required
D DC Control of both Chroma Amplitude and Hue Shift
D Crystal–Controlled Internal Feedback Oscillator
D Built–in Noise Immunity
D Schmitt Trigger Color Killer
D Automatic Chroma Control
D Internal Burst Gate and Gate Pulse Shaping Circuit
D High Oscillator Lock–in Sensitivity
D Built–in Supply Regulation
Absolute Maximum Ratings: (TA = +25°C unless otherwise specified)
Power Supply Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35mA
Horizontal Pulse Input Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 250µA Peak
Power Dissipation (Package Limitation), PD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 625mW
Derate above TA = +25°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.0mW/°C
Operating Temperature Range (Ambient), Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –20° to +75°C
Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –65° to +150°C
Electrical Characteristics: (VCC = +20V, RS = 390Ω, TA = +25°C unless otherwise specified)
Parameter
Test Conditions
Min Typ Max Unit
Regulated Voltage
Maximum Undistorted Chroma Output
Maximum Chroma Gain
Automatic Chroma Control Range (ACC)
Chroma Burst Level to Kill
Manual Chroma Gain Control Range
IS = 35mA
9.0
IS = 27mA
–
E(Pin3) = E(Pin14), Note 1
34
E(Pin3) = E(Pin14), Note 1
34
–3dB Down from Maximum Undistorted –
Output, Note 1
Note 1
–
∆V(Pin3) V(Pin14) to 0V
50
9.6 11.5 V
9.2 –
V
40 –
dB
40 –
dB
19 –
dB
1.4 – mVP–P
60 –
dB
Note 1. With 5.0mV(p–p) burst input at pin 5 set E(pin 10) to just “unkill”.
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