HD Audio Codec with 2W Class-D, Capless HP, Retasking, and SPDIF Out
Overview
Conexant's CX20672 is a low-power, 102 dB SNR HD Audio codec with integrated 2-WRMS stereo Class-D using Spread Spectrum dispersion technology to prevent EMI. Two independent pairs of DACs and three independent pairs of ADCs support multi-Streaming and Real Time Communications applications. The audio fidelity of the device exceeds Microsoft Premium Logo requirements.
A ProCoustic capless headphone driver delivers 31 mW per channel into 32 Ω loads and eliminates external DC blocking capacitors. Two retaskable ports are available allowing Microphone/Line in and Microphone/Line In/Line Out retasking. All output ports feature PopShield technology that eliminates pops and clicks.
Features
2 pairs of independent DACs and 3 pairs of independent ADCs
Sampling rates include 16-bit, 44.1 kHz to 24-bit, 192 kHz for DACs, and from 16-bit, 44.1 kHz to 24-bit; 96 kHz
for ADCs.
Integrated 2 WRMS (per channel) Class-D stereo speaker amplifier
Capless headphone eliminates BOM
Two retaskable ports
Stereo Digital Microphone interface
Integrated boost for all microphones
One independent SPDIF output
Integrated regulators maximize performance
Record Security Control
Integrated headphone limiter (GS Mark)
D-Flex Power Management
Wake on PC BEEP
PopShield eliminates pops and clicks
Fidelity exceeds Microsoft WHCK requirements
Jack sense detects up to 4 jacks
Digital Mixer
Compliant with all Intel High Definition Audio Specifications
Selectable 1.5V/3.3 V link signaling
Available in 40-QFN package