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PDF CDB5451A Data sheet ( Hoja de datos )
| Número de pieza | CDB5451A | |
| Descripción | Evaluation Board and Software | |
| Fabricantes | Cirrus Logic | |
| Logotipo |  |
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CDB5451A
CDB5451A Evaluation Board and Software
Features
Direct Shunt Sensor and Current
Transformer Interface for 3-Phase Power
On-Board Voltage Reference
On-board crystal for XIN
Digital Interface to PC
Lab Windows/CVI™ Evaluation Software
- Real-Time RMS calculation
- Fast Fourier Transform (FFT) Analysis
- Time Domain Analysis
- Noise Histogram Analysis
General Description
The CDB5451A is an inexpensive tool designed to eval-
uate the functionality/performance of the CS5451A 6-
channel A/D Converter. In addition to this data sheet, the
CS5451A Data Sheet is required in conjunction with the
CDB5451A Evaluation Board.
Six terminal block connectors serve as inputs to the
CS5451A’s six analog input pairs. The CDB5451A in-
cludes an optional voltage reference source for
CS5451A. A 4.096MHz crystal is provided as a source
for the CS5451A XIN pin, or an external clock source can
be supplied by the user. Digital output data from the
CS5451A is transferred to the user’s IBM-compatible PC
via the included 25-pin parallel port cable.
The CDB5451A includes PC software, allowing the user
to perform data capture (includes option for time domain
analysis, histogram analysis, and frequency domain
analysis). The software also allows real-time RMS calcu-
lation/analysis to be performed simultaneously on all six
channels.
ORDERING INFORMATION
CDB5451A
Evaluation Board
VIN1+
VIN1-
IIN1+
IIN1-
VIN2+
VIN2-
IIN2+
IIN2-
VIN3+
VIN3-
IIN3+
IIN3-
VREF
VA- VA+
+5 VIN
GND
VD+
Charge
Pump
Circuitry
3V
Regulator
(Not Populated)
Control Switches
CPD VA-
VA+
GAIN
OWRS
RESET
FSO
SDO
CLK
SE
CS5451A
XIN
VREF
IN OUT
Voltage
Reference
Header
Reset Circuit
Serial-to-
Parallel
Interface
Crystal
4.096 MHz
To PC
Preliminary Product Information
This document contains information for a new product.
Cirrus Logic reserves the right to modify this product without notice.
http://www.cirrus.com
Copyright © Cirrus Logic, Inc. 2001
(All Rights Reserved)
Nov ‘03
DS458DB3
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1 page  
CDB5451A
+5V. This voltage is defined as the voltage pre-
sented across VD+ and DGND.
2.2.3 Charge Pump Options
The output from CS5451A’s charge-pump driver
pin (CPD) can be used to generate a -2V supply
when the proper jumper settings are selected on
HDR9. This -2V supply can be used as the nega-
tive power supply connection for the CS5451A’s
VA- pin. Referring to Figure 1, circuitry for a
charge-pump circuit is included on-board. The
charge pump circuit consists of capacitors C11,
C12, and C36, and diodes D1 and D2.
As an alternative to using the charge pump circuit,
the user can supply an off-board -2V DC power
source to the “A-” banana connector. This option
is controlled by the setting on HDR9.
2.3 Eval Board Control -
Headers/Switches
Table 2 lists the various adjustable headers and
switches on the CDB5451A Evaluation Board, as
well as their default settings (as shipped from the
factory). The header settings can be adjusted by
the user to select various options on the evaluation
board. These options are described further in the
following paragraphs.
2.3.1 Analog Inputs
Refer to Figure 2. The settings on the 12 analog in-
put headers (2 headers per channel) which are
designated as HDR1 up to HDR8, and HDR10 up
to HDR13, determine which inputs will carry a sig-
nal, and which inputs may be grounded. They can
be configured to accept either a single-ended or
Power Supplies
Analog Digital
+3 +3
+3 +3
+3 +3
+3 +3
+3 +3
+3 +3
+3 +5
+3 +5
+3 +5
+3 +5
+5 +3
A+
+3
+3
+3
+3
NC
NC
+3
+3
NC
NC
+5
Power Post Connections
A-
GND
D+
-2 0 +3
+5 V_IN
NC
HDR9
A- O O
CPD O O
HDR17
+5V_IN O O
A+ O O
-2
0
NC
NC
A- O O +5V_IN O O
CPD O O A+
OO
NC
0
+3
NC
A- O O +5V_IN O O
CPD O O A+
OO
NC
0
NC
NC
A- O O +5V_IN O O
CPD O O A+
OO
-2
0
NC
+5
A- O O +5V_IN O O
CPD O O A+
OO
NC
0
NC
+5
A- O O +5V_IN O O
CPD O O A+
OO
-2
0
+5
NC
A- O O +5V_IN O O
CPD O O A+
OO
NC
0
+5
NC
A- O O +5V_IN O O
CPD O O A+
OO
-2
0
+5
+5
A- O O +5V_IN O O
CPD O O A+
OO
NC
0
+5
+5
A- O O +5V_IN O O
CPD O O A+
OO
0
+2
+5
NC
A- O O +5V_IN O O
CPD O O A+
OO
Table 1. Power Supply Connections
HDR18
VD+ O O
V+ O O
VD+ O O
V+ O O
VD+ O O
V+ O O
VD+ O O
V+ O O
VD+ O O
V+ O O
VD+ O O
V+ O O
VD+ O O
V+ O O
VD+ O O
V+ O O
VD+ O O
V+ O O
VD+ O O
V+ O O
VD+ O O
V+ O O
DS458DB3
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CDB5451A
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DS458DB3
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11 Page | ||
| Páginas | Total 24 Páginas | |
| PDF Descargar | [ Datasheet CDB5451A.PDF ] | |
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