Cirrus Logic CS5381 - Manual

Copyright © Cirrus Logic, Inc. 2005
(All Rights Reserved) http://www.cirrus.com
120 dB, 192 kHz, Multi-Bit Audio A/D Converter
Features
! Advanced Multi-bit Delta-Sigma Architecture
! 24-bit Conversion
! 120 dB Dynamic Range
! -110 dB THD+N
! Supports All Audio Sample Rates Including
192 kHz
! 260 mW Power Consumption
! High-Pass Filter or DC Offset Calibration
! Supports Logic Levels between 5 and 2.5 V
! Differential Analog Architecture
! Low-Latency Digital Filtering
! Overflow Detection
! Pin-Compatible with the CS5361
General Description
The CS5381 is a complete analog-to-digital converter
for digital audio systems. It performs sampling, analog-
to-digital conversion, and anti-alias filtering - generating
24-bit values for both left and right inputs in serial form
at sample rates up to 216 kHz per channel.
The CS5381 uses a 5th-order, multi-bit delta-sigma
modulator followed by digital filtering and decimation,
which removes the need for an external anti-alias filter.
The ADC uses a differential architecture which provides
excellent noise rejection.
The CS5381 is available in 24-pin TSSOP and SOIC
packages for Commercial grade (-10° to +70° C). The
CDB5381 Customer Demonstration board is also avail-
able for device evaluation and implementation
suggestions. Please refer to the
“Ordering Information”
on page 22 .
The CS5381 is ideal for audio systems requiring wide
dynamic range, negligible distortion, and low noise -
such as A/V receivers, DVD-R, CD-R, digital mixing
consoles, and effects processors.
Interface Supply
2.5 V to 5 V
Internal Voltage
Reference
Le
ve
l T
ra
n
sl
at
or
Digital Supply
3.3 V to 5 V
Mode
Configuration
Analog Supply
5 V
Switch-Cap
ADC
Differential
Inputs
Digital
Filters
PCM Serial
Audio Output
Switch-Cap
ADC
Differential
Inputs Digital
Filters
OVFL
HPF
Reset
JULY '05
DS563F2
CS5381