Part Number : NJM2113
Function : LOW VOLTAGE AUDIO POWER AMPLIFIER
Package : DMP8, DIP8, SOP8 JEDEC 150mil Type
Maker : Japan Radio Corporation
Pinouts : 
Description :
The NJM2113 is an audio power amplifier designed for telephone application, such as in s peakerphones. Coupling capacitors to the speaker are not r equired, as it has differential speaker outputs. The closed loop gain is set with two external resistors. A CD pin permit powering down with muting the input signal.
Features :
1. Wide Operating Voltage ( 2~16V ).
2. Low Operating Current ( 2.7mA Typ. )
3. CD Input to Power Down the IC with Mute
4. Low Power-Down Operating Current ( 72μA Typ. )
Official Hompage :
http://www.njr.com/semicon/products/NJM2113.html
Datasheet PDF Download : 
Others datasheet of same file :
NJM-2113, NJM2113D, NJM2113E, NJM2113L, NJM2113M