Cirrus Logic CS53L21 - Manual

Copyright © Cirrus Logic, Inc. 2006
(All Rights Reserved) http://www.cirrus.com
Preliminary Product Information
This document contains information for a new product.
Cirrus Logic reserves the right to modify this product without notice.
MAY ‘06
DS700PP1
Low Power, Stereo Analog to Digital Converter
FEATURES
 98 dB Dynamic Range (A-wtd)
 -88 dB THD+N
 Analog Gain Controls
– +32 dB or +16 dB MIC Pre-Amplifiers
– Analog Programmable Gain Amplifier
(PGA)
 +20 dB Digital Boost
 Programmable Automatic Level Control (ALC)
– Noise Gate for Noise Suppression
– Programmable Threshold and
Attack/Release Rates
 Independent Left/Right Channel Control
 Digital Volume Control
 High-Pass Filter Disable for DC Measurements
 Stereo 3:1 Analog Input MUX
 Dual MIC Inputs
– Programmable, Low Noise MIC Bias Levels
– Differential MIC Mix for Common Mode
Noise Rejection
 Very Low 64 Fs Oversampling Clock Reduces
Power Consumption
SYSTEM FEATURES
 24-bit Conversion
 4 kHz to 96 kHz Sample Rate
 Multi-bit Delta Sigma Architecture
 Low Power Operation
– Stereo Record (ADC): 8.72 mW @ 1.8 V
– Stereo Record (MIC to PGA and ADC):
13.73 mW @ 1.8 V
 Variable Power Supplies
– 1.8 V to 2.5 V Digital & Analog
– 1.8 V to 3.3 V Interface Logic
 Power Down Management
– ADC, MIC Pre-Amplifier, PGA
 Software Mode (I²C ® & SPI ™ Control)
 Hardware Mode (Stand-Alone Control)
 Flexible Clocking Options
– Master or Slave Operation
 Digital Routing Mixes
– Mono Mixes
1.8 V to 3.3 V
Multibit
Oversampling
ADC
Multibit
Oversampling
ADC
Serial Audio
Output
1.8 V to 2.5 V
MUX
PGA
PCM
Seri
al
In
te
rf
a
ce
Register
Configuration
Le
ve
l Translato
r
Reset
Software Mode Stereo Input 1
Stereo Input 2
Stereo Input 3 /
Mic Input 1 & 2
PGA
+32 dB
+32 dB
Volume
Controls
ALC
MIC
Bias
MUX
MUX
High Pass
Filters
ALC
Digital
Signal
Processing
Engine
Hardware Mode
or I 2 C & SPI
Control Data
CS53L21