Order this document by MC34119/D
MC34119
Low Power Audio Amplifier
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.
• 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
AUDIO AMPLIFIER
SEMICONDUCTOR
TECHNICAL DATA
8
Low Power–Down Quiescent Current (65 µA Typ)
1
Drives a Wide Range of Speaker Loads (8.0 Ω and Up)
P SUFFIX
PLASTIC PACKAGE
CASE 626
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
8
Requires Few External Components
1
D SUFFIX
PLASTIC PACKAGE
CASE 751
(SO–8)
MAXIMUM RATINGS
Rating
Value
Unit
–1.0 to +18
Vdc
±250
mA
–1.0, VCC + 1.0
–1.0, VCC + 1.0
Vdc
–55, +140
°C
Supply Voltage
Maximum Output Current at VO1, VO2
Maximum Voltage @ Vin, FC1, FC2, CD
Applied Output Voltage to VO1, VO2 when disabled
Junction Temperature
NOTE:
8
1
DTB SUFFIX
PLASTIC PACKAGE
CASE 948J
(TSSOP)
ESD data available upon request.
PIN CONNECTIONS
Block Diagram and Simplified Application
Rf
75 k
CD 1
Audio
Input
Ci
0.1
Ri
3.0 k
4
FC1
C1
1.0 µF
Vin
3
–
+
5
#1
6 VCC
5 VO1
VO1
Speaker
50 k
125 k
2
7 Gnd
Vin 4
VCC
4.0 k
C2*
5.0 µF
FC2 2
FC1 3
6
8 VO2
4.0 k
–
+
(Top View)
8
#2
ORDERING INFORMATION
FC2
Bias
Circuit
50 k
VO2
1
CD
Chip
Disable
Device
Operating
Temperature Range
Package
MC34119
7
* = Optional
Differential Gian = 2 x
Rf
Ri
Plastic DIP
MC34119P
Gnd
This device contains 45 active transistors.
MC34119D
TA = –20° to +70°C
MC34119DTB
© Motorola, Inc. 1996
MOTOROLA ANALOG IC DEVICE DATA
SO–8
TSSOP
Rev 1
1
