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