CS42435
108 dB, 192 kHz 4-In, 8-Out TDM CODEC
FEATURES
Four 24-bit A/D, Eight 24-bit D/A Converters
ADC Dynamic Range
– 105 dB Differential
– 102 dB Single-Ended
DAC Dynamic Range
– 108 dB Differential
– 105 dB Single-Ended
ADC/DAC THD+N
– -98 dB Differential
– -95 dB Single-Ended
Compatible with Industry-Standard Time
Division Multiplexed (TDM) Serial Interface
DAC Sampling Rates up to 192 kHz
ADC Sampling Rates up to 96 kHz
Programmable ADC High-Pass Filter for DC
Offset Calibration
Logarithmic Digital Volume Control
Hardware Mode or Software I²C
®
& SPI
™
Supports Logic Levels Between 5 V and 1.8 V
Control Port & Serial
Audio Port Supply =
1.8 V to 5 V
GENERAL DESCRIPTION
The CS42435 CODEC provides
four
multi-bit analog-to-
digital and eight multi-bit digital-to-analog delta-sigma
converters. The CODEC is capable of operation with ei-
ther differential or single-ended inputs and outputs, in a
52-pin MQFP package.
Four
fully differential, or single-ended, inputs are avail-
able on stereo ADC1 and ADC2. Digital volume control
is provided for each ADC channel, with selectable over-
flow detection. An auxiliary serial input is available for
an additional two channels of PCM data.
All eight DAC channels provide digital volume control
and can operate with differential or single-ended
outputs.
The CS42435 is available in a 52-pin MQFP package in
Commercial (-40°C to +85°C) and Automotive (-40°C to
+105°C) grades. The CDB42438 Customer Demonstra-
tion board is also available for device evaluation and
implementation suggestions. Please refer to
for complete ordering
information.
The CS42435 is ideal for audio systems requiring wide
dynamic range, negligible distortion and low noise, such
as A/V receivers, DVD receivers, and automotive audio
systems.
Digital Supply = 3.3 V
Analog Supply =
3.3 V to 5 V
Level Translator
Hardware Mode or
I
2
C/SPI Software Mode
Control Data
Register
Configuration
Internal Voltage
Reference
Reset
Level Translator
TDM Serial Audio
Input
Auxilliary Serial
Audio Input
Input Master
Clock
TDM Serial Audio
Output
Volume
Controls
TDM Serial
Interface
Digital
Filters
ΔΣ
Modulators
Multibit
DAC1-4 and
Analog Filters
8
8
Differential or
Single-Ended
Outputs
High Pass
Filter
High Pass
Filter
Digital
Filters
Digital
Filters
Multibit
Oversampling
ADC1
Multibit
Oversampling
ADC2
2
2
Differential or
Single-Ended
Analog Inputs
2
2
Copyright
©
Cirrus Logic, Inc. 2007
(All Rights Reserved)
DECEMBER '07
DS685F2
CIRRUS [ CIRRUS LOGIC ]
