■ GENERAL DESCRIPTION
The NJM2173 is a low voltage microphone amplifier designed for portable audio items.
It includes standby, two-type gain selector, and power ripple rejection adjustment circuit. It realizes very low turn-noise at standby mode.
It is suitable for portable Mini-Disc, portable Compact-Disc, and other microphone amplifier application.

■ FEATURES
● Operating Voltage Range 2.7 to 4.5V
● Operating Current 2.2mA typ. at V+=2.7V
● Supply Current in Standby Mode 1µA max.
● Maximum Output Voltage -1.5dBV typ. at THD=0.1%
● Internal Two-type Gain Select Function 13dB typ./ 29dB typ.
● Internal Standby Function
● Power Ripple Rejection Terminal 95dB typ. at Gv=13dB
● Bipolar Technology
● Package Outline SSOP14