Order this document by MC34119/D
The MC34119 is a low power audio amplifier intergrated circuit intended
(primarily) 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.
The MC34119 is available in standard 8–pin DIP, SOIC package, and
TSSOP package.
LOW POWER
AUDIO AMPLIFIER
SEMICONDUCTOR
TECHNICAL DATA
• 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
8
1
• 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)
P SUFFIX
PLASTIC PACKAGE
CASE 626
• Gain Adjustable from <0 dB to >46 dB for Voice Band
• Requires Few External Components
8
1
D SUFFIX
PLASTIC PACKAGE
CASE 751
MAXIMUM RATINGS
Rating
Value
–1.0 to +18
±250
Unit
Vdc
mA
(SO–8)
Supply Voltage
Maximum Output Current at V , V
8
O1 O2
1
Maximum Voltage @ V , FC1, FC2, CD
–1.0, V
–1.0, V
+ 1.0
+ 1.0
Vdc
in
Applied Output Voltage to V , V
CC
CC
when disabled
DTB SUFFIX
PLASTIC PACKAGE
CASE 948J
O1 O2
Junction Temperature
–55, +140
°C
(TSSOP)
NOTE: ESD data available upon request.
PIN CONNECTIONS
Block Diagram and Simplified Application
Rf
75 k
CD
1
2
8
7
V
O2
6
V
CC
FC2
Gnd
C
0.1
i
R
3.0 k
i
FC1
3
4
6
5
V
CC
V
in
4
3
Audio
Input
V
–
5
O1
#1
FC1
Speaker
V
V
+
in
O1
4.0 k
4.0 k
#2
C1
(Top View)
1.0 µF
C2*
5.0
50 k
125 k
–
V
8
1
O2
µ
F
2
+
ORDERING INFORMATION
Operating
FC2
Chip
Disable
50 k
Bias
Circuit
CD
Temperature Range
Device
Package
MC34119
7
MC34119P
MC34119D
MC34119DTB
Plastic DIP
SO–8
Gnd
* = Optional
Differential Gian = 2 x
T
= –20° to +70°C
A
R
R
f
i
TSSOP
This device contains 45 active transistors.
Motorola, Inc. 1996
Rev 1
1
MOTOROLA ANALOG IC DEVICE DATA