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D/A Converters

CS43198

Audio D/A Converter with MasterHIFI
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CS43198 Overview

The CS43198 is a next generation, low-power audio DAC that provides a superior system-level audio performance without draining battery life. This IC minimizes board space requirements while enabling performance and features to drive design differentiation. The CS43198 features a high impedance of 600 Ω, a 130 dBA dynamic range, a THD+N rating of –115 dB, and inter channel isolation of >110 dB. To minimize pre-echos and ringing artifacts, the CS43198 is designed with proprietary digital-interpolation filters that support five selectable digital filter responses. Filtering options include low group delay with pseudo-linear phase and a fast or slow roll-off. A patented on-chip DSD processor supports up to DSD256 in direct mode to preserve audio integrity by providing non-decimating volume control with soft ramp, and 50 kHz filtering as recommended by Scarlet Book. Volume matching of the analog output levels and channel mixing enable a seamless transition between the DSD and PCM playback paths. The CS43198 is available in a 40-pin QFN or a 42-ball WLCSP packages.

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Product Features

  • CS43198 is the evolution of the CS4399. Re-defining Audio again

    • Improved output level up to 2 VRMS

    • Evolved performance: THD+N increased from -108 dB to -115 dB

    • Increased hi-fi DSD playback rate from DSD128 to DSD256

  • Advanced 32-bit oversampled multi-bit modulator with mismatch shaping technology

    • Eliminates distortion due to on-chip component mismatch

    • Supports up to 384 kHz sampling frequency

    • Low clock jitter sensitivity

    • Auto mute detection

  • Serial audio input

    • I²S, right-justified, left-justified, DoP, DSD and TDM interface

    • Main or secondary operation

    • Volume control with 0.5 dB step size and soft ramp

    • 44.1 kHz de-emphasis and inverting feature

  • Patented dedicated DSD processor featuring high resolution audio format support

    • DirectStream Digital™ (DSD)

    • DSD over PCM (DSD DoP), up to DSD256

    • Handles switching between DSD and PCM audio streams, matching the analog audio output level

  • Integrated PLL

    • Reference clock sourced from MCLK pin

    • System clock output

  • 1 MHz I²C and hardware mode control

Parametric Specifications

Analog Output TypePseudo-Differential
Channels Out2
DAC Dynamic Range (dB)130
DAC THD+N (dB)-115
Sample Rate (kHz)384
Resolution (bits)32
Analog Power Supply (V)1.8
Digital Power Supply (V)1.8
Operational Power Consumption (mW)26
Output Level (Vrms)2
Target MarketPro Audio
FeaturesMasterHIFI
Package40 QFN; 42 WLCSP

Design Resources

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Evaluation Boards

  • CS43198 DAC Evaluation Kit (CDB43198K)

    The CDB43198K is a dedicated platform for testing and evaluating the CS43198, a high-performance audio DAC with integrated impedance detection and headphone drivers. The kit includes the CDB-HDR-MEAS board for measuring 130 dB dynamic range performance, with software control via WISCE.

    Order SampleUser Guide

Software Packages

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