NTE7143

Integrated Circuit

Audio Power Amplifier, 20W

Description:

The NTE7143 is a monolithic power amplifier in a 5–Lead TO220 type package offering very low

distortion and high quality performance for consumer audio applications.

This device delivers 20W into a 4

Ω or 8Ω load on ±25V supplies. Using an 8Ω load and ±30V supplies,

over 30W of power may be delivered. The amplifier is designed to operate with a minimum of external

components. Device overload protection consists of both internal current limit and thermal shutdown.

The NTE7143 design takes advantage of advanced circuit techniques and processing to achieve ex-

tremely low distortion levels even at high output power levels. Other outstanding features include high

gain, fast slew rate and a wide power bandwidth, large output voltage swing, high current capability,

and a very wide supply range. The amplifier is internally compensated and stable for gains of 10 or

greater.

Features:

D Up to 30W Output Power

D Low Distortion: 0.015%, 1kHz, 20W

D Wide Power Bandwidth: 70kHz

D Protection for AC and DC Short Circuits to GND

D Thermal Protection with Parole Circuit

D High Current Capability: 4A

D Wide Supply Range: 16V – 60V

D Internal Output Protection Diodes

D 94dB Ripple Rejection

Applications:

D High Performance Audio Systems

D Bridge Amplifiers

D Stereo Phonographs

D Servo Amplifiers

D Instrument Systems

Absolute Maximum Ratings: (Note 1)

60V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

30W

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

0

° to +70°C

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

–65

° to +150°C

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

150

°C

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

+260

°C

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3

°C/W

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

73

°C/W

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Note 1. “Absolute Maximum Ratings” indicate limits beyond which damage to the device may occur.

Operating ratings indicate conditions for which the device is functional, but do not guarantee

specific performance limits.

temperatures greater than 25

°C, the NTE7143 must be derated based on a maximum 150°C

is typically 2

°C/W.