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鈥搒tage IF amplifier/limiter, low鈥損ass filter, differential
peak detector, DC volume control, regulated power supply, audio preamplifier, and output stage.
The audio power amplifier will deliver 4W of low鈥揹istortion audio to a 16鈩?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 8鈩?loud speaker.
The NTE1231 is supplied in a quad in鈥搇ine 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鈥揕ead DIP package with heat鈥搒ink 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, V
CC
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28V
Repetitive Peak Output Current, I
OUT
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.5A
Power Dissipation, P
D
T
pins
= +90擄C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.3W
T
A
= +70擄C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1W
Junction Temperature Range, T
J
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 鈥?0擄 to +150擄C
1
2
3
