DESCRIPTION

The WM9712L is a highly integrated input / output device designed for mobile computing and communications. The device can connect directly to a 4-wire or 5-wire touchpanel, mono or stereo microphones, stereo headphones and a mono speaker, reducing total component count in the system. Additionally, phone input and output pins are provided for seamless integration with wireless communication devices.

FEATURES

AC’97 Rev 2.2 compatible stereo CODEC

-  DAC SNR 94dB, THD –87dB

-  ADC SNR 92dB, THD –87dB

-  Variable Rate Audio, supports all WinCE sample rates

-  Tone Control, Bass Boost and 3D Enhancement

On-chip 45mW headphone driver

On-chip 400mW mono speaker driver

Stereo, mono or differential microphone input

-  Automatic Level Control (ALC)

Auxiliary mono DAC (ring tone or DC level generation)

Seamless interface to wireless chipset

Resistive touchpanel interface

-  Supports 4-wire and 5-wire panels

-  12-bit resolution, INL 2 LSBs (<0.5 pixels)

-  X, Y and touch-pressure (Z) measurement

-  Pen-down detection supported in Sleep Mode

Up to 5 GPIO pins

2 comparator inputs for battery monitoring

Up to 4 auxiliary ADC inputs

1.8V to 3.6V supplies

7x7mm QFN

APPLICATIONS

Personal Digital Assistants (PDA)

Smartphones

Handheld and Tablet Computers