CS4245
105 dB, 24-Bit, 192 kHz Stereo Audio CODEC
D/A Features
Multi-bit Delta Sigma modulator
105 dB dynamic range
-95 dB THD+N
Up to 192 kHz sampling rates
Single-ended analog architecture
Volume control with soft ramp
– 0.5 dB step size
– Zero crossing click-free transitions
A/D Features
Multi-bit Delta Sigma modulator
105 dB dynamic range
-95 dB THD+N
Stereo 6:1 Input Multiplexer
Programmable Gain Amplifier (PGA)
– +/- 12 dB gain, 0.5 dB step size
– Zero crossing, click-free transitions
Stereo microphone inputs
– +32 dB gain stage
– Low noise bias supply
Popguard
TM
Technology
– Minimizes the effects of output transients
Filtered line level outputs
Selectable serial audio interface formats
– Left justified up to 24-bit
– I²S up to 24-bit
– Right justified 16, 18, 20 and 24-bit
Up to 192 kHz sampling rates
Selectable serial audio interface formats
– Left justified up to 24-bit
– I²S up to 24-bit
High pass filter or DC offset calibration
Selectable 50/15
µs
de-emphasis
Control Output for External Muting
1.8 V to 5 V
3.3 V to 5 V
3.3 V to 5 V
PCM Serial Interface
Level
Translator
Serial
Audio
Input
I
2
C/SPI
Control Data
Interrupt
ADC Overflow
Reset
Volume
Control
Volume
Control
Interpolation
Filter
Interpolation
Filter
Multibit
∆Σ
Modulator
Multibit
∆Σ
Modulator
Switched Capacitor
DAC and Filter
Left DAC Output
Mute
Control
Mute Control
Right DAC Output
MUX
Left Aux Output
Right Aux Output
Stereo Input 1
Stereo Input 2
Stereo Input 3
Switched Capacitor
DAC and Filter
Level Translator
Register Configuration
PCM Serial Interface
Internal Voltage
Reference
Serial
Audio
Output
Level
Translator
High Pass
Filter
Linear Phase
Anti-Alias Filter
Multibit
Oversampling
ADC
Multibit
Oversampling
ADC
PGA
MUX
PGA
+32 dB
Stereo Input 4 /
Mic Input 1 & 2
+32 dB
High Pass
Filter
Linear Phase
Anti-Alias Filter
Stereo Input 5
Stereo Input 6
Preliminary Product Information
Cirrus Logic, Inc.
www.cirrus.com
This document contains information for a new product.
Cirrus Logic reserves the right to modify this product without notice.
Copyright Cirrus Logic, Inc. 2004
(All Rights Reserved)
©
AUG ‘04
DS656PP1
1
CIRRUS [ CIRRUS LOGIC ]
