Key Features
■ Android Wired Headset v1.1 compliant
■ High performance mono microphone to ADC record path with 90 dB SNR
□ ADC digital filters with Audio and Voice mode high-pass characteristics
□ Low-noise microphone bias regulator with programmable output
■ High performance stereo DAC to headphone playback path with 100 dB SNR
□ DAC digital filters with Audio and Voice mode high-pass cutoff and 5-band equalizer
■ Advanced Accessory Detect supports
□ 3-pole and 4-pole jack detection
□ MIC/GND polarity switching
□ Multiple button detection
□ Headphone impedance testing
■ Microphone input with automatic level control
■ Digital sidetone path with gain
■ Digital tone generator
■ System controller for simplified pop-free start-up and shut-down
■ Mixed sample rates of 24 kHz ADC, 48 kHz DAC supported from a single digital interface
■ Sample rates of up to 96 kHz at 24-bit resolution
■ Shut-down mode for very low current consumption during standby
■ Phase locked loop with WCLK tracking to generate system clock
■ 4-wire digital audio interface with support for I2S, TDM and other audio formats
■ 2-wire I2C compatible interface with support for High Speed mode up to 3.4 MHz
■ 4.5 mm x 1.6 mm WLCSP RouteEasy™ package for low cost PCB manufacture