High performance stereo audio codec

The CS4233B is part of a new series of pro audio converters aimed at giving cost-effective transparent audio conversion. All within one device that is easy to use and provides system level cost savings. The CS4233B is a high performance, 32-bit resolution, stereo Codec. The CS4233B supports differential analog input/outputs and 32-bit digital output/inputs via the audio serial port (ASP) at sample rates up to 384 kHz. The ADC uses a 5th-order, multibit sigma-delta modulator followed by digital filtering and decimation. This provides a dynamic range of over 110 dB and THD+N below -100 dB all within a 25 mW/ch power budget. The voltage-output DAC incorporates a proprietary analog FIR architecture to reduce out-of-band noise and minimize the external component requirements. This provides a dynamic range of over 110 dB and THD+N below -100 dB. The device can be powered from a single rail and controlled by either hardware pins, I²C or SPI, making it both flexible and easy to integrate. This, together with Cirrus’s analog gain feature, makes the CS4233B ideal for digital mixing consoles, DAW interfaces, effects processors, musical instruments and audio/video receivers.

Learn more about Cirrus Logic's high performance audio solutions.

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Technologies

Mono/Stereo Codecs

Features

• High performance stereo codec
  • Differential analog inputs/outputs
  • High-resolution 32-bit digital architecture
  • Low-latency digital filters and digital volume control
• Crystal oscillator interface
• Sample timing alignment across multiple devices
• Virtual passive attenuation device (PAD)
• Clip detection
• Signal activity detection
• Audio serial port (ASP) sample rates up to 384 kHz
  • I²S, left-justified, and TDM data formats
• Hardware and software control modes
  • Hardware control with no host processor required
  • I²C control port up to 1 MHz
  • SPI control port up to 24 MHz
• Single-supply operation at 3.3 V
  • Support for 1.8 V–3.3 V digital input/output

Parametric Specifications

Channels In	2
Channels Out	2
Resolution (bits)	32
DAC Dynamic Range (dB)	110
ADC Dynamic Range (dB)	110
DAC THD+N (dB)	-100
ADC THD+N (dB)	-100
Analog Power Supply (V)	3.3
Digital Power Supply (V)	3.3
Logic Power Supply (V)	1.8-3.3
Package	40-pin QFN

Technical Documents

CDB-PROAUDIO User Guide

May 1, 2026, DS1352R4 : 4.0 MB

CS4233B Product Data Sheet

May 1, 2026, DS1437A2 : 2.2 MB

DC4233S/B-CODEC User Guide

May 1, 2026, DS1453DB3 : 4.4 MB

Software and Tools

Press Releases

2026

May 28

Cirrus Logic Expands Flagship Audio Converter Portfolio with Nine New High Performance Audio Devices for Professional and Prosumer Markets

Optimized for a Wider Range of Mid‑Tier and Professional Applications, including Musical Instruments

Block Diagram

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