CS5381
120 dB, 192 kHz, Multi-Bit Audio A/D Converter
Features General Description
! Advanced Multi-bit Delta-Sigma Architecture
The CS5381 is a complete analog-to-digital converter
for digital audio systems. It performs sampling, analog-
! 24-bit Conversion
to-digital conversion, and anti-alias filtering - generating
! 120 dB Dynamic Range
24-bit values for both left and right inputs in serial form
at sample rates up to 216 kHz per channel.
! -110 dB THD+N
The CS5381 uses a 5th-order, multi-bit delta-sigma
! Supports All Audio Sample Rates Including
modulator followed by digital filtering and decimation,
192 kHz
which removes the need for an external anti-alias filter.
! 260 mW Power Consumption
The ADC uses a differential architecture which provides
excellent noise rejection.
! High-Pass Filter or DC Offset Calibration
The CS5381 is available in 24-pin TSSOP and SOIC
! Supports Logic Levels between 5 and 2.5 V
packages for Commercial grade (-10 to +70 C). The
! Differential Analog Architecture
CDB5381 Customer Demonstration board is also avail-
able for device evaluation and implementation
! Low-Latency Digital Filtering
suggestions. Please refer to the Ordering Information
! Overflow Detection
on page 22.
! Pin-Compatible with the CS5361
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.
Analog Supply Digital Supply Interface Supply
5 V 3.3 V to 5 V 2.5 V to 5 V
Internal Voltage
Reference
Reset
Mode
Configuration
Switch-Cap
Digital
Differential
ADC
Filters
Inputs
HPF
OVFL
Differential Switch-Cap Digital
Inputs ADC
Filters
PCM Serial
Audio Output
Copyright Cirrus Logic, Inc. 2005
JULY '05
(All Rights Reserved)
CS5381
TABLE OF CONTENTS
1. PIN DESCRIPTIONS ............................................................................................................................... 4
2. CHARACTERISTICS AND SPECIFICATIONS....................................................................................... 5
SPECIFIED OPERATING CONDITIONS .................................................................................................... 5
ABSOLUTE MAXIMUM RATINGS............................................................................................................... 5
ANALOG CHARACTERISTICS (CS5381-KSZ/-KZZ).................................................................................. 6
DIGITAL FILTER CHARACTERISTICS....................................................................................................... 7
SWITCHING CHARACTERISTICS - SERIAL AUDIO PORT .................................................................... 10
DC ELECTRICAL CHARACTERISTICS.................................................................................................... 13
DIGITAL CHARACTERISTICS .................................................................................................................. 13
THERMAL CHARACTERISTICS .............................................................................................................. 13
TYPICAL CONNECTION DIAGRAM ......................................................................................................... 14
3. APPLICATIONS .................................................................................................................................... 15
3.1 Operational Mode/Sample Rate Range Select.............................................................................. 15
3.2 System Clocking............................................................................................................................ 15
3.2.1 Master Mode ........................................................................................................................ 15
3.2.2 Slave Mode .......................................................................................................................... 16
3.3 Power-Up Sequence ..................................................................................................................... 16
3.4 Analog Connections ...................................................................................................................... 16
3.5 High-Pass Filter and DC Offset Calibration .................................................................................. 17
3.6 Overflow Detection ........................................................................................................................ 18
3.6.1 OVFL Configuration ............................................................................................................. 18
3.6.2 OVFL Output Timing ............................................................................................................ 18
3.7 Grounding and Power Supply Decoupling..................................................................................... 18
3.8 Synchronization of Multiple Devices.............................................................................................. 18
3.9 Capacitor Size on the Reference Pin (FILT+)................................................................................ 19
4. PACKAGE DIMENSIONS ..................................................................................................................... 20
5. ORDERING INFORMATION ................................................................................................................. 22
7. REVISION HISTORY............................................................................................................................. 24
2 DS563F2