U4083BMFP ATMEL Corporation, U4083BMFP Datasheet

U4083BMFP

Manufacturer Part Number

U4083BMFP

Description

SOP8

Manufacturer

ATMEL Corporation

Datasheet

1.U4083BMFP.pdf (15 pages)

Specifications of U4083BMFP

Date_code

05+

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Features

•

Benefits

•

Description

The integrated circuit U4083B is a low-power audio amplifier for telephone loudspeak-

ers. It has differential speaker outputs to maximize the output swing at low supply

voltages. There is no need for coupler capacitors. The U4083B has an open loop gain

of 80 dB where the closed loop gain is adjusted with two external resistors. A chip dis-

able pin permits powering down and/or muting the input signal.

Figure 1. Block Diagram

Wide Operating Voltage Range: 2 V to 16 V

Low Current Consumption: 2.7 mA Typically

Chip Disable Input to Power-down the Integrated Circuit

Low Power-down Quiescent Current

Drives a Wide Range of Speaker Loads

Output Power P

Low Harmonic Distortion (0.5% Typically)

Wide Gain Range: 0 dB to 46 dB

Low Number of External Components

Low Current Consumption

FC3

FC2

50k

= 250 mW at R

125k

U4083B

Amp1

= 32 W (Speaker)

Amp2

Bias circuit

GND

VO2

VO1

Low-power

Audio Amplifier

for Telephone

Applications

U4083B

Rev. 4655A–CORD–01/03

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