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Fabricante

34119

LOW POWER AUDIO AMPLIFIER

Freescale Semiconductor 

Freescale Semiconductor

Technical Data

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)

• Drives a Wide Range of Speaker Loads (8.0 Ω and Up)

• Output Power Exceeds 250 mW with 32 Ω Speaker

• 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

Document Number: MC34119

Rev. 3.0, 12/2006

34119

LOW POWER AUDIO AMPLIFIER

D SUFFIX

EF SUFFIX (PB-FREE)

98ASB42564B

8-PIN SOICN

ORDERING INFORMATION

Device

MC34119D/R2

MCZ34119EF/R2

Temperature

Range (TA)

-20°C to 70°C

Package

8 SOICN

Audio

Input

VIN

4

3

FC1

34199

CC

6 V01

5

V02

8

2

FC2

1 CD

7

GND

Chip

Disable

Figure 1. 34119 Simplified Application Diagram

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

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

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

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