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CDB5521/22/23/24/28
CDB5521/22/23/24/28 Evaluation Board and Software
Features
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).
l Evaluation Board and Software Supports All
Chips: CS5521, CS5522, CS5523, CS5524,
and CS5528
l Direct Thermocouple Interface
l RS-232 to PC With Test Modes
l On-board 80C51 Microcontroller
l On-board Voltage Reference
l Lab Windows/CVITM Evaluation Software
– Register Setup & Chip Control
– Data Capture
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.
– FFT Analysis
– Time Domain Analysis
– Noise Histogram Analysis
ORDERING INFORMATION
l On-board Charge Pump Drive Circuitry
CDB5521/22/23/24/28
Evaluation Board
-5 ANALOG
+5 ANALOG
VOLTAGE
AGND
DGND
+5 DIGITAL
REFERENCE
J2
REF+
TEST
REF-
SWITCHES
J1
AIN1+
on off
3
2
1
CS5521
CS5522
CS5523
CS5524
CS5528
80C51
Microcontroller
LEDs
AIN1-
AIN2+
AIN2-
AIN3+
AIN3-
AIN4+
AIN4-
RS232
CONNECTOR
CS
RS232
DRIVER/RECEIVER
SDI
SDO
SCLK
A0
NBV
CPD
A1
NBV DRIVE
CIRCUITRY
RESET
CIRCUITRY
CRYSTAL
32.768 kHz
CRYSTAL
11.0592 MHz
This document contains information for a new product.
Cirrus Logic reserves the right to modify this product without notice.
Preliminary Product Information
MAY ‘00
DS317DB2
Copyright Cirrus Logic, Inc. 2000
P.O. Box 17847, Austin, Texas 78760
(512) 445 7222 FAX: (512) 445 7581
http://www.cirrus.com
(All Rights Reserved)
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