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NTE1231A

Integrated Circuit Complete 4 Watt TV Sound Channel

NTE Electronics 

NTE1231 & NTE1231A

Integrated Circuit

Complete 4 Watt TV Sound Channel

Description:

Capable of carrying out all of the functions of a TV sound channel, the NTE1231 and NTE1231A sili-

con monolithic integrated circuits consist of a six–stage IF amplifier/limiter, low–pass filter, differential

peak detector, DC volume control, regulated power supply, audio preamplifier, and output stage.

The audio power amplifier will deliver 4W of low–distortion audio to a 16Ω load with a supply of 24V.

When used with a 12V supply, such as is found in many portable TV sets, these devices will furnish

1.5W to an 8Ω loud speaker.

The NTE1231 is supplied in a quad in–line plastic package with a copper lead frame. This device is

designed to use the printed wiring board on which it is mounted for heat dissipation.

The NTE1231A is furnished in a 16–Lead DIP package with heat–sink contact tabs. The webbed lead

configuration (Pin4 & Pin5, Pin12 & Pin13) allows an inexpensive heat sink to be easily attached for

increased power dissipation capability and yet permits the use of a standard IC socket or printed wir-

ing board hole layout.

Features:

D High Sensitivity

D High AM Rejection

D DC Volume Control

D High Power Output

D Low Distortion

D Wide Operating Voltage Range: 9V to 28V

D Low Quiescent Current Drain

Absolute Maximum Ratings:

Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28V

Repetitive Peak Output Current, IOUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.5A

Power Dissipation, PD

Tpins = +90°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.3W

TA = +70°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1W

Junction Temperature Range, TJ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –40° to +150°C

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