Freescale Semiconductor, Inc. reserves the right to change the detail specifications,

as may be required, to permit improvements in the design of its products.

Document Number: MC34119

Rev. 3.0, 12/2006

Freescale Semiconductor

Technical Data

© Freescale Semiconductor, Inc., 2007. All rights reserved.

Low Power Audio Amplifier

The 34119 is a low power audio amplifier integrated circuit

intended for telephone applications, such as in speakerphones. It

provides differential speaker outputs to maximize output swing at low

supply voltages (2.0 V minimum). Coupling capacitors to the speaker

are not required. Open loop gain is 80 dB, and the closed loop gain

is set with two external resistors. A Chip Disable pin permits powering

down and/or muting the input signal.

Features

• Wide Operating Supply Voltage Range (2.0 V to 16 V), Allows

Telephone Line Powered Applications

•

Low Quiescent Supply Current (2.7 mA Typ) for Battery Powered

Applications

• Chip Disable Input to Power Down the IC

•

Low Power--Down Quiescent Current (65 µA Typ)

•

•

• Low Total Harmonic Distortion (0.5% Typ)

• Gain Adjustable from <0 dB to >46 dB for Voice Band

• Requires Few External Components

• Pb-Free Packaging Designated by Suffix Code EF

Figure 1. 34119 Simplified Application Diagram

LOW POWER AUDIO AMPLIFIER

D SUFFIX

EF SUFFIX (PB-FREE)

98ASB42564B

8-PIN SOICN

34119

ORDERING INFORMATION

Device

Temperature

Package

MC34119D/R2

-20°C to 70°C

8 SOICN

MCZ34119EF/R2

Chip

Disable

Audio

Input

GND

CC

VIN

4

FC1

3

FC2

2

5

V01

8

V02

1

CD

34199

6

7