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