CS5320 Datasheet, PDF (1/38 Pages) Cirrus Logic – 24-Bit Variable Bandwidth A/D Converter Chipset

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
V_dd1 V_ss1
CS5320/21
V_dd2 V_ss2
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
[phone] FAX: [phone]
http://www.cirrus.com
Copyright © Cirrus Logic, Inc. 1999
(All Rights Reserved)
OCT ‘99
DS454PP1
1