This document introduces the characteristics and features of the DS679A2 low power stereo codec produced by Cirrus Logic. The codec has a dynamic range of 98 dB and a THD+N of -86 dB, supports stereo headphone amplifiers, digital signal processing engines, beep generators, peak detection and limiters, automatic level control, noise gates, digital volume controls, etc.
The CS42L51 is a highly integrated 24‑bit, 96 kHz stereo CODEC designed for portable, low‑power applications. It features a headphone amplifier with a charge‑pump supply, programmable gain, ALC, noise gate, tone control, and a beep generator.
The document provides full pin descriptions, typical connection diagrams for software (I²C) and hardware (SPI) modes, electrical specifications, register maps, power‑consumption data, and application guidance for audio players, PDAs, and other portable devices.
| Dynamic Range (A‑weighted) | 98 dB |
|---|---|
| THD+N | -86 dB |
| Stereo Playback Power Consumption | 12.93 mW @1.8 V |
| Sample Rate Range | 4 kHz to 96 kHz |
| Converter Resolution | 24‑bit |
| Package | 32‑pin QFN |
The codec provides a 98 dB A‑weighted dynamic range.
Stereo playback consumes 12.93 mW when powered at 1.8 V.
It is offered in a 32‑pin QFN package for both commercial and automotive grades.