■ GENERAL DESCRIPTION
The NJW2303 is base band interface IC for cellular Phone system. It consists of speaker amplifier with limiter and noise canceller, microphone amplifier, and ringer driver. It also includes power down function which applies to low consumption power design.
The NJW2303 is suitable for PCS, cellular phone, and any other handy wireless communication equipments.

■ FEATURES
● Operating Voltage                                  (2.7 ~ 3.3V)
● Low Operating Current                           (2.2mA typ.)
● Internal Power-Down ON / OFF Switch
● Low Power-Down Operating Current      (1µA MAX.)
‹Power Amplifier›
● Output Power Exceeds 40mW                (V+=3V, RL=32Ω)
● Low Output Noise Voltage                       (-100dBV typ.)
● Input Limit Level                                       (-14dBV typ.)
● Internal Noise Cancel AGC Function
‹Microphone Amplifier›
● Low Equivalent Input Noise Voltage         (2µVrms typ.)
● Internal Three Steps Ringer Driver
● Bi-CMOS Technology
● Package Outline                                       QFP32