Datasheet
CS42L56 Datasheet
DS851F2 | 4 MBApril 2014
CS42L56 Overview
The CS42L56 is a highly integrated, 24-bit, ultra low power stereo codec based on multi-bit Delta Sigma modulation. Both the ADC and DAC offer many features suitable for low power portable system applications. The CS42L56 includes a stereo ADC, stereo DAC, and stereo headphone driver. The analog input path includes independent channel control of a variety of features including a Programmable Gain Amplifier, digital volume control with soft ramp transitions, and an analog pass-through mode for low power operation. It also includes an analog input mux and mic bias generation for supporting a variety of analog audio inputs. The DAC output includes a DSP engine with parametric EQ, volume control, limiting functions, and a beep generator. The Class H stereo headphone amplifier combines the efficiency of an integrated step-down and inverting charge pump with the linearity and low EMI of a Class AB amplifier. The output is ground centered, eliminating the need for large DC blocking capacitors. The CS42L56 is available in a 40-pin QFN package for the Commercial (-40 to +85° C) grade. The CDB42L56 Customer Demonstration board is also available for device evaluation and implementation suggestions.
CIRRUS®
CIRRUS ROCKS®
ENGINEERED TO ROCK®
INNOVATION THAT ROCKS®
Product Features
Digital to Analog Features
5 mW Stereo playback power consumption
99 dB dynamic range (A-wtd)
–86 dB THD+N
Digital signal processing engine
Stereo Headphone and Line Amplifiers
Step-down/inverting charge pump
Class H amplifier - automatic supply adj.
Pseudo-differential ground-centered outputs
High HP power output at –75 dB THD+N
1 VRMS line output @ 1.8 V
Analog vol. ctl. (+12 to –60 dB in 1 dB steps)
Analog in to analog out passthrough
Pop and click suppression
Analog to Digital Features
3.5 mW Stereo record power consumption
95 dB dynamic range (A-wtd)
–87 dB THD+N
Configurable analog inputs
Analog Programmable Gain Amplifier (PGA)
Programmable, low-noise mic bias output
Programmable Automatic Level Control (ALC)
Independent ADC channel control
High-pass filter disable for DC measurements
System Features
Audio (11.2896 MHz or 12.288 MHz) or USB (12 MHz) main clock input
Low-power operation
Headphone detect input
High performance 24-bit converters
Integrated high efficient power management reduces power consumption
Digital power reduction
Power down management
Analog & digital routing/mixes
I²C® or SPI™ control port
I²S or left-justified digital interface format
Flexible clocking options
Main or secondary operation
Wide range of sample rates supported