CS4272 Overview
The CS4272 is a high-performance integrated audio codec that performs stereo analog-to-digital and digital/analog conversion of up to 24-bit serial values at sample rates up to 192 kHz. The CS4272 utilizes a differential analog architecture to deliver unmatched analog performance and maximize system flexibility with an on-chip oscillator, output volume control with soft ramp and zero crossing, selectable digital filter response and integrated level shifters for direct interface to logic levels from 2.5 V to 5 V. The on-chip oscillator eliminates the need for an external crystal oscillator circuit, thereby reducing overall design cost and conserving circuit board space. The CS4272 automatically uses the on-chip oscillator in the absence of an applied main clock, simplifying system design.
The wide dynamic range, negligible distortion and premium sound quality of the CS4272 make it the ideal for applications such as digital mixing consoles, effects processors, DVD recorders, set-top box systems and automotive audio systems.
Product Features
Complete stereo codec
24-bit conversion
System sampling rates up to 192 kHz
114 dB dynamic range
–100 dB THD+N
Output digital volume control with soft ramp
Low-latency digital filter
Selectable digital filter response
High-pass filter or DC offset calibration
Differential analog architecture
On-chip oscillator
Supports main or secondary mode operations
5 V analog power supply
3.3 V or 5 V digital power supply
Supports direct interface to logic levels from 2.5 V to 5.0 V
Footprint-compatible with the CS4271
Package: 28-pin TSSOP; lead-free assembly
Consumer and automotive D-grade availability
Parametric Specifications
| Analog Input Type | Differential |
| Analog Output Type | Differential |
| Channels In | 2 |
| Channels Out | 2 |
| Control Interface | SPI/I²C |
| ADC Dynamic Range (dB) | 114 |
| DAC Dynamic Range (dB) | 114 |
| ADC THD+N (dB) | -100 |
| DAC THD+N (dB) | -100 |
| Sample Rate (kHz) | 4-192 |
| Analog Power Supply (V) | 5 |
| Digital Power Supply (V) | 3.3-5.0 |
| Logic Power Supply (V) | 2.5-5 |
| Operational Power Consumption (mW) | 738 |
| Features | Volume control, on-chip oscillator,serial audio port - master/slave |
| Package | 28 TSSOP |
Design Resources
CS4272K-DZZ
CS4272K-DZZR
CS4272 Datasheet
CS4272 Evaluation Board User Guide
Audio Conversion Systems Noise Calculations and Requirements
Design Notes for a 2-Pole Filter with Differential Input
CS4272 IBIS Model
Evaluation Boards
CS4272 Stereo Codec Evaluation Board (CDB4272)
The CDB4272 demonstration board is an excellent means for evaluating the CS4272 stereo codec, providing balanced XLR analog inputs, CS8406/CS8416 S/PDIF transmit/receive, and Windows-based software control of the codec and board configuration via a parallel port interface.