Key features
■ Stereo multi-bit Delta Sigma DAC with SNR 100 dB ('A' weighted @ 48 kHz)
■ Stereo multi-bit Delta Sigma ADC with SNR 96 dB ('A' weighted @ 48 kHz)
■ Ultra low-power stereo headphone driver with
□ Stereo DAC to HP playback power: 2.5 mW
□ 2x58 mW output power (16 Ω)
□ ‘Capless’ output via GND centred signals
□ Four level charge pump with continuous tracking of audio signal (Class G)
□ Short circuit protection
■ Support of 8, 11.025, 12, 16, 22.05, 24, 32, 44.1, 48 and 96 kHz sample rates
■ On-chip PLL with signal shaper and audio Sample Rate Matching
■ Wide range of external clocks including industry standard 256xFs, system clock 12, 13, 24, 26 or 27 MHz and low power 32 kHz mode
■ Audio serial data bus supports I2S, left/right justified, DSP and TDM modes
■ Stereo or mono differential microphone interface
■ Programmable ultra-low noise bias supply for electret microphones
■ Volume controlled stereo auxiliary inputs and outputs supporting FM Radio and fixed gain speaker amplifiers
■ Multi-mode audio routing and mixers
■ Pop & click suppression circuitry
■ ASSP DSP filter engine for digital audio enhancements (acoustic filtering, wind noise suppression, 5-band equaliser, 3D sound, automatic gain control)
■ Supports supply from single voltage (1.8/2.5 V)
■ Extensive modular power control
■ Package: 49 bump WL-CSP – 0.4 mm pitch