CS43131 datasheet(2/156 Pages) CIRRUS

2 / 156 page

DS1155F1

CS43131

General Description

The CS43131 is a high-performance, 32-bit resolution, stereo audio DAC that supports up to 384-kHz sampling frequency

with integrated low-noise ground-centered headphone amplifiers. The advanced 32-bit oversampled multibit modulator

with mismatch shaping technology eliminates distortion due to on-chip component mismatch. Proprietary

digital-interpolation filters support five selectable filter responses with pseudo-linear phase and ultralow latency to

minimize pre-echos and ringing artifacts. An on-chip programmable filter is available for further response customization.

Other features include volume control with 0.5-dB steps, wideband flatness mode support, and digital deemphasis for

44.1-kHz sample rate.

The integrated ground-centered stereo headphone amplifiers are capable of delivering more than 30 mW into 32-

 load

or 5 mW into 600-

 load per channel at full performance. It is also capable of generating 2 Vrms on a 600- load.

Proprietary headphone impedance detection enables wide-band impedance detection for further digital post-processing.

An internal stereo audio switch with true bypass supports an alternate analog input path for interfacing with external audio

sources to minimize the overall bill-of-materials cost and PCB area.

The patented on-chip DSD processor preserves audio integrity by allowing signal processing such as volume control and

50-kHz Scarlet Book recommended filtering to be applied directly to the DSD stream without an intermediate decimation

stage. Additional features like volume matching and channel mixing enable seamless transition between DSD and PCM

playback paths.

The CS43131 accepts I2S, right-justified, left-justified, and TDM-format PCM data at sample rates from 32 to 384 kHz. The

industry-standard high-speed I2C interface capable of up to 1-MHz operation provides easy configuration control. An

integrated PLL allows for maximum clocking flexibility in any system. Popguard® technology eliminates output transients

upon power-up or power-down events.

The CS43131 is available in a commercial-grade 42-ball WLCSP or 40-pin QFN package for operation from –10°C to

+70°C.

CS43131 Datasheet(PDF) 2 Page - Cirrus Logic