Product Description

The CMAMP110 Microphone Amplifier selects (via MIC_SELECT) between and amplifies Internal and External Microphone input signals. The device is designed to be compliant with Microsoft PC99 and PC2001 specifications. The CMAMP110 contains the equivalent of 7 operational amplifiers and 19 precision resistors, and is intended for use in PC audio applications.

Features

• Microsoft PC99 & PC2001 compliant

• Differential and Single-ended Microphone Inputs

• Internally frequency compensated for unity gain

• 20dB DC voltage gain (maximum)

• Buffered DC bias voltage for external microphone

• Very low supply current (< 3.0 mA)

• 20KΩ minimum input impedance

• Low Total Harmonic Distortion (0.03 at 1 KHz typical)

• Small MSOP package

• Lead-free version available

Applications

• Computers

• Mobile Phones

• PDAs

• MP3 Players

• Digital Cameras

• Video Tape Recorders