SL34119
Low Power Audio Amplifier
The SL34119 is a low power audio amplifier integrated 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 volts 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 SL34119 is
available in a standard 8 pin DIP or a surface mount package.
•
Wide Operating Supply Voltage Range (2-16 Volts) - Allows
Telephone Line Powered Applications
•
Low Quiescent Supply Current for Battery Powered Applications
•
Chip Disable Input to Power Down the IC
•
Low Power Down Quiescent Current
•
Drives a Wide Range of Speaker Loads (8-100Ω)
•
Output Power Exceeds 250 mW with 32Ω Speaker
•
Low Total Harmonic Distortion
•
Gain Adjustable from <0 dB to >46 dB for Voice Band
•
Requires Few External Components
ORDERING INFORMATION
SL34119N Plastic
SL34119D SOIC
T
A
= -10° to 70° C for
all packages
PIN ASSIGNMENT
SIMPLIFIED BLOCK DIAGRAM
* = Optional
R
Differential Gain = 2 x
f
R
i
SLS
System Logic
Semiconductor
SLS [ SYSTEM LOGIC SEMICONDUCTOR ]
