The WM1811 is a highly integrated ultra-low power hi-fi codec with an integrated stereo Class D speaker driver and Class W headphone driver to minimize power consumption during audio playback. This IC requires only two voltage supplies, with all other internal supply rails generated from integrated LDOs. Stereo full duplex asynchronous sample rate conversion and multichannel digital mixing combined with powerful analog mixing allow the device to support a huge range of different architectures and use cases. WM1811A and WM1811G are equivalent devices manufactured at different wafer fabs ensuring security of supply chain.
24-bit 2-channel hi-fi DAC and 2-channel hi-fi ADC
100 dB SNR during DAC playback ('A' weighted)
Smart MIC interface
Power, clocking and data input for up to two digital MICs
High performance analog MIC interface
MIC activity detect and interrupt allows processor to sleep
Low power jack detection support
Impedance sensing for accessory/push-button detection
2W stereo (2 x 2W) Class D speaker driver
Capless Class W headphone drivers
Integrated charge pump
5.3mW total power for DAC playback to headphones
4 Line outputs (single-ended or differential)
BTL earpiece driver
Digital audio interfaces for multi-processor architecture
Asynchronous stereo duplex sample rate conversion
Powerful mixing and digital loopback functions
ReTune™ Mobile 5-band, 4-channel parametric EQ
Dynamic range controller
Dual FLL provides all necessary clocks
Self-clocking modes allow processor to sleep
All standard sample rates from 8 kHz to 96 kHz
Active noise reduction circuits
DC offset correction removes pops and clicks
Ground loop noise cancelation
Decoder or Encoder Signal Type - Audio
Decoder/Encoder Type - Analog to Digital Decoder/Encoder
Decoder/Encoder Type - Digital to Analog Decoder/Encoder
