Wolfson is a leading supplier of high-performance, mixed signal integrated circuits for the digital consumer market. This device is part of the WM9713 voice and audio CODEC. The WM9713 is a highly integrated input/output device designed for mobile computing and communications. This circuit analysis report will take you inside 2 key areas with hierarchical schematics shipped in the interactive ICWorks Browser application for browsing the schematic.

Chipworks is extracting the microphone input/bias (front end of microphone before PGA), the output stage of head phone (stereo) and the speaker phone (single ended) behind the DAC. Specifically this will include:

- Microphone input: pre-amps, single microphone and dual microphone configuration, biasing circuit, bias current detect, PGA's
- Headphone outputs: HPL and HPR
- Mono output
- Speaker outputs: SPKL and SPKR
- Thermal sensor