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Cirrus Logic

CS5320 Datasheet Preview

CS5320 Datasheet

24-Bit Variable Bandwidth A/D Converter Chipset

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CS5320/21/22
24-Bit Variable Bandwidth A/D Converter Chipset
Features
l CMOS A/D Converter Chipset
l Dynamic Range
- 130 dB @ 25 Hz Bandwidth
- 121 dB @ 411 Hz Bandwidth
l Delta-Sigma Architecture
- Fourth-Order Modulator
- Variable Oversampling: 64X to 4096X
- Internal Track-and-Hold Amplifier
l CS5321 Signal-to-Distortion: 115 dB
l Clock Jitter Tolerant Architecture
l Input Voltage Range: +4.5 V
l Flexible Filter Chip
- Hardware or Software Selectable Options
- Seven Selectable Filter Corners (-3 dB)
Frequencies: 25, 51, 102, 205, 411, 824 and
1650 Hz
l Low Power Dissipation: <100 mW
Description
The CK5320 and CK5321 Chipsets function as a unique
A/D converter intended for very high resolution measure-
ment of signals below 1500 Hz. The CK5320 Chipset is
a cost effective commercial grade solution for applica-
tions which require a high dynamic range A/D converter.
The chipsets perform sampling, A/D conversion, and
anti-alias filtering.
The CS5320 and CS5321 use Delta-Sigma modulation
to produce highly accurate conversions. The ∆Σ modula-
tor oversamples, virtually eliminating the need for
external analog anti-alias filters. The CS5322 linear-
phase FIR digital filter decimates the output to any one
of seven selectable update periods: 16, 8, 4, 2, 1, 0.5
and 0.25 milliseconds. Data is output from the digital fil-
ter in a 24-bit serial format.
ORDERING INFORMATION*
Chip Sets
Kits
CS5320-KL & CS5322-KL CK5320-KL1
CS5321-BL & CS5322-KL CK5321-KL1
CS5321-BL & CS5322-BL CK5321-BL1
* Refer to Table 5
Vdd1 Vss1
CS5320/21
Vdd2 Vss2
AINR
AIN+
AIN-
VREF+
VREF-
Analog
Modulator
AGND
DGND
CS5322
VD+ SYNC CLKIN CS R/W
LPWR
RESET
OFST
MSYNC
MFLG
MCLK
MDATA
MDATA
HBR
VD+
DGND
CSEL
Digital
Filter
RSEL
SCLK
SID
SOD
ERROR
DRDY
ORCAL
DECA
DECB
DECC
H/S TDATA PWDN USEOR DGND
Preliminary Product Information
This document contains information for a new product.
Cirrus Logic reserves the right to modify this product without notice.
P.O. Box 17847, Austin, Texas 78760
(512) 445 7222 FAX: (512) 445 7581
http://www.cirrus.com
Copyright © Cirrus Logic, Inc. 1999
(All Rights Reserved)
OCT ‘99
DS454PP1
1




Cirrus Logic

CS5320 Datasheet Preview

CS5320 Datasheet

24-Bit Variable Bandwidth A/D Converter Chipset

No Preview Available !

CS5320/21/22
TABLE OF CONTENTS
1. CHARACTERISTICS AND SPECIFICATIONS ............................................... 4
CS5320 AND CS5321 ANALOG CHARACTERISTICS ............................. 4
CS5320 AND CS5321 SWITCHING CHARACTERISTICS ........................ 6
CS5320 AND CS5321 DIGITAL CHARACTERISTICS .............................. 7
CS5320 AND CS5321 RECOMMENDED OPERATION CONDITIONS .... 7
CS5320 AND CS5321 ABSOLUTE MAXIMUM RATINGS ......................... 7
CS5322 FILTER CHARACTERISTICS ...................................................... 8
CS5322 POWER SUPPLY ....................................................................... 10
CS5322 SWITCHING CHARACTERISTICS ............................................ 10
CS5322 DIGITAL CHARACTERISTICS ................................................... 15
CS5322 RECOMMENDED OPERATION CONDITIONS ......................... 15
CS5322 ABSOLUTE MAXIMUM RATINGS ............................................. 15
2. GENERAL DESCRIPTION ............................................................................ 16
2.1. Analog Input ...................................................................................... 18
2.2. The OFST Pin.................................................................................... 18
2.3. Input Range and Overrange Conditions ............................................ 19
2.4. Voltage Reference ............................................................................. 20
2.5. Clock Source ..................................................................................... 20
2.6. Low Power Mode ............................................................................... 21
2.7. Digital Interface and Data Format...................................................... 21
2.8. Performance ...................................................................................... 22
2.9. Power Supply Considerations............................................................ 23
2.10. Power Supply Rejection Ratio ......................................................... 23
2.11. RESET Operation ............................................................................ 23
2.12. Power-down Operation .................................................................... 23
2.13. SYNC Operation .............................................................................. 24
2.14. Serial Read Operation ..................................................................... 24
2.15. Serial Write Operation ..................................................................... 25
2.16. Offset Calibration Operation ............................................................ 25
2.17. Status Bits ....................................................................................... 26
2.18. Board Layout Considerations .......................................................... 28
3. CS5320/21 PIN DESCRIPTIONS .................................................................. 29
Power Supplies ......................................................................................... 29
Analog Inputs ............................................................................................ 29
Digital Inputs ............................................................................................. 30
Digital Outputs .......................................................................................... 30
Contacting Cirrus Logic Support
For a complete listing of Direct Sales, Distributor, and Sales Representative contacts, visit the Cirrus Logic web site at:
http://www.cirrus.com/corporate/contacts/
Preliminary product information describes products which are in production, but for which full characterization data is not yet available. Advance product infor-
mation describes products which are in development and subject to development changes. Cirrus Logic, Inc. has made best efforts to ensure that the information
contained in this document is accurate and reliable. However, the information is subject to change without notice and is provided “AS IS” without warranty of
any kind (express or implied). No responsibility is assumed by Cirrus Logic, Inc. for the use of this information, nor for infringements of patents or other rights
of third parties. This document is the property of Cirrus Logic, Inc. and implies no license under patents, copyrights, trademarks, or trade secrets. No part of
this publication may be copied, reproduced, stored in a retrieval system, or transmitted, in any form or by any means (electronic, mechanical, photographic, or
otherwise) without the prior written consent of Cirrus Logic, Inc. Items from any Cirrus Logic website or disk may be printed for use by the user. However, no
part of the printout or electronic files may be copied, reproduced, stored in a retrieval system, or transmitted, in any form or by any means (electronic, mechanical,
photographic, or otherwise) without the prior written consent of Cirrus Logic, Inc. Furthermore, no part of this publication may be used as a basis for manufacture
or sale of any items without the prior written consent of Cirrus Logic, Inc. The names of products of Cirrus Logic, Inc. or other vendors and suppliers appearing
in this document may be trademarks or service marks of their respective owners which may be registered in some jurisdictions. A list of Cirrus Logic, Inc. trade-
marks and service marks can be found at http://www.cirrus.com.
2 DS454PP1


Part Number CS5320
Description 24-Bit Variable Bandwidth A/D Converter Chipset
Maker Cirrus Logic
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CS5320 Datasheet PDF






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