Audio D/A Converter with MasterHIFI

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.



  • 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

Channel(s) Out 2
Resolution (bits) 32
Dynamic Range (dB) 130
THD+N (dB) -115
Sample Rate (kHz) 384
Analog Power Supply (V) 1.8
Digital Power Supply (V) 1.8
Operational Power Consumption (mW) 26
Output Level (Vrms) 2
Package 40 QFN;


For more information about Cirrus Logic's Hi-Fi product line, visit the Hi-Fi Audio page.

Technical Documents

CS43198 Product Data Sheet

Dec 16, 2022, DS1156F2 : 4.7 Mb

CDB43198 REV B1 Schematic and Layout

Nov 2, 2018, REV B1 : 1.7Mb

CDB43198-GBK Kit Manual

Nov 2, 2018, DS1156DB1 : 3.0 Mb

Design Resources

CDB43198K Evaluation Board Data Sheet

Sep 18, 2018, DS1156DB2 : 3.1 Mb

WAN-0118 Guidelines

Sep 1, 2014, WAN_0118 rev 2.5 : 740 kb

Software and Tools


Jan 14, 2021, v3.12.0.5 : 43.2 Mb

Device Pack for CS43198

Nov 29, 2018, v1.0.36 : 14.7 Mb


Comprehensive Solutions