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CDB5521/22/23/24/28
CDB5521/22/23/24/28 Evaluation Board and Software
Features
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Evaluation
General Description
The CDB5521/22/23/24/28 is an inexpensive tool de-
signed to evaluate the performance of the CS5521,
CS5522, CS5523, CS5524, and CS5528 Analog-to-Dig-
ital Converters (ADC).
The evaluation board includes a 2.5 V voltage reference,
an 80C51 microcontroller, an RS232 driver/receiver, and
firmware. The 8051 controls the serial communication
between the evaluation board and the PC via the firm-
ware, thus, enabling quick and easy access to all of the
CS5521/22/23/24/28’s registers.
The CDB5521/22/23/24/28 also includes one installed
ADC sample, and software for Data Capture, Time Do-
main Analysis, Histogram Analysis, and Frequency
Domain Analysis.
ORDERING INFORMATION
CDB5521/22/23/24/28
Evaluation Board
Board and Software Supports All
Chips: CS5521, CS5522, CS5523, CS5524,
and CS5528
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Direct Thermocouple Interface
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RS-232 to PC With Test Modes
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On-board 80C51 Microcontroller
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On-board Voltage Reference
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Lab Windows/CVI
TM
Evaluation Software
– Register Setup & Chip Control
– Data Capture
– FFT Analysis
– Time Domain Analysis
– Noise Histogram Analysis
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On-board
Charge Pump Drive Circuitry
-5 ANALOG
+5 ANALOG
AGND
DGND
+5 DIGITAL
VOLTAGE
REFERENCE
J2
REF+
REF-
J1
AIN1+
AIN1-
AIN2+
AIN2-
AIN3+
AIN3-
AIN4+
AIN4-
NBV
CPD
NBV DRIVE
CIRCUITRY
CRYSTAL
32.768 kHz
CRYSTAL
11.0592 MHz
RESET
CIRCUITRY
CS
SDI
SDO
SCLK
A0
A1
CS5521
CS5522
CS5523
CS5524
CS5528
TEST
SWITCHES
on off
3
LEDs
80C51
Microcontroller
2
1
RS232
CONNECTOR
RS232
DRIVER/RECEIVER
Preliminary Product Information
P.O. Box 17847, Austin, Texas 78760
(512) 445 7222 FAX: (512) 445 7581
http://www.cirrus.com
This document contains information for a new product.
Cirrus Logic reserves the right to modify this product without notice.
Copyright
©
Cirrus Logic, Inc. 2000
(All Rights Reserved)
MAY ‘00
DS317DB2
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