Freescale Semiconductor
Technical Data
Document Number: MC34119
Rev. 3.0, 12/2006
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
34119
LOW POWER AUDIO AMPLIFIER
D SUFFIX
EF SUFFIX (PB-FREE)
98ASB42564B
8-PIN SOICN
ORDERING INFORMATION
Device
MC34119D/R2
MCZ34119EF/R2
Temperature
Range (T
A
)
-20°C to 70°C
Package
8 SOICN
34199
Audio
Input
VIN
FC1
4
3
6
5
CC
V01
V02
8
2
FC2
1
7
GND
CD
Chip
Disable
Figure 1.
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.
FREESCALE [ FREESCALE SEMICONDUCTOR, INC ]
