Order this document by MC34119/D
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
MC34119
LOW POWER
AUDIO AMPLIFIER
SEMICONDUCTOR
TECHNICAL DATA
•
•
•
•
•
•
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)
Gain Adjustable from <0 dB to >46 dB for Voice Band
Requires Few External Components
8
P SUFFIX
PLASTIC PACKAGE
CASE 626
1
MAXIMUM RATINGS
Rating
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:
ESD data available upon request.
Value
–1.0 to +18
±250
–1.0, VCC + 1.0
–1.0, VCC + 1.0
–55, +140
Unit
Vdc
mA
Vdc
°C
D SUFFIX
PLASTIC PACKAGE
CASE 751
(SO–8)
8
1
DTB SUFFIX
PLASTIC PACKAGE
CASE 948J
(TSSOP)
Block Diagram and Simplified Application
Rf
75 k
6
Ci
0.1
Ri
3.0 k
VCC
PIN CONNECTIONS
CD 1
FC2 2
FC1 3
8 VO2
7 Gnd
6 VCC
5 VO1
(Top View)
Audio
Input
Vin
FC1
4
3
–
+
#1
4.0 k
4.0 k
5
VO1
Speaker
Vin 4
C1
1.0
µF
C2*
5.0
µF
FC2
2
50 k
125 k
50 k
–
+
#2
Bias
Circuit
8
VO2
ORDERING INFORMATION
1
CD
Chip
Disable
Device
MC34119P
Operating
Temperature Range
Package
Plastic DIP
MC34119
7
* = Optional
Differential Gian = 2 x
Gnd
Rf
Ri
MC34119D
MC34119DTB
TA = –20° to +70°C
SO–8
TSSOP
Rev 1
This device contains 45 active transistors.
©
Motorola, Inc. 1996
MOTOROLA ANALOG IC DEVICE DATA
1
MOTOROLA [ MOTOROLA, INC ]
