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NTE738

Integrated Circuit Color TV Processing Circuit

NTE Electronics 

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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