Analog Devices AD7401A Evaluation Board EVAL-AD7401AEDZ EVAL-AD7401AEDZ Data Sheet
Product codes
EVAL-AD7401AEDZ
Evaluation Board for
the AD7400A and AD7401A
EVAL-AD7400A/AD7401A
Rev. 0
Evaluation boards are only intended for device evaluation and not for production purposes.
Evaluation boards are supplied “as is” and without warranties of any kind, express, implied, or
statutory including, but not limited to, any implied warranty of merchantability or fitness for a
particular purpose. No license is granted by implication or otherwise under any patents or other
intellectual property by application or use of evaluation boards. Information furnished by Analog
Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog
Devices for its use, nor for any infringements of patents or other rights of third parties that may result
from its use. Analog Devices reserves the right to change devices or specifications at any time
without notice. Trademarks and registered trademarks are the property of their respective owners.
Evaluation boards are not authorized to be used in life support devices or systems.
Evaluation boards are supplied “as is” and without warranties of any kind, express, implied, or
statutory including, but not limited to, any implied warranty of merchantability or fitness for a
particular purpose. No license is granted by implication or otherwise under any patents or other
intellectual property by application or use of evaluation boards. Information furnished by Analog
Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog
Devices for its use, nor for any infringements of patents or other rights of third parties that may result
from its use. Analog Devices reserves the right to change devices or specifications at any time
without notice. Trademarks and registered trademarks are the property of their respective owners.
Evaluation boards are not authorized to be used in life support devices or systems.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.461.3113
©2008 Analog Devices, Inc. All rights reserved.
FEATURES
Full-featured evaluation board for the AD7400A and AD7401A
EVAL-CED1Z compatible
Standalone capability
On-board analog buffering
Various linking options
PC software for control and data analysis when using the
EVAL-CED1Z compatible
Standalone capability
On-board analog buffering
Various linking options
PC software for control and data analysis when using the
EVAL-CED1Z
GENERAL DESCRIPTION
This data sheet describ
es the evaluation board for the
. The
second-order,
sigma-delta (Σ-Δ) modulators that convert an analog input
signal into a high speed, 1-bit data stream with on-chip digital
isolation based on the Analog Devices Inc., iCoupler® technol-
ogy. The AD7400A and AD7401A operate from a 5 V power
supply and accept a differential input signal of ±200 mV (±320 mV
signal into a high speed, 1-bit data stream with on-chip digital
isolation based on the Analog Devices Inc., iCoupler® technol-
ogy. The AD7400A and AD7401A operate from a 5 V power
supply and accept a differential input signal of ±200 mV (±320 mV
full scale). The analog input is continuously sampled by the
analog modulator, eliminating the need for external sample-
and-hold circuitry. The input information is contained in the
output stream as a density of ones with a data rate of 10 MHz.
The original information can be reconstructed with an appro-
priate digital filter. The serial I/O can use a 5 V or a 3 V supply
(V
analog modulator, eliminating the need for external sample-
and-hold circuitry. The input information is contained in the
output stream as a density of ones with a data rate of 10 MHz.
The original information can be reconstructed with an appro-
priate digital filter. The serial I/O can use a 5 V or a 3 V supply
(V
DD2
). Full details on the AD7400A and AD7401A are available
in the AD7400A and AD7401A data sheets, which are available
from Analog Devices and should be consulted in conjunction
with this data sheet when using the evaluation board.
from Analog Devices and should be consulted in conjunction
with this data sheet when using the evaluation board.
On-board components include two
analog op amps
for buffering the differential analog input to the AD7400A
and AD7401A. Various link options are explained in the Link
Options section. Interface to this board using a standard 2-row
34-pin SPORT connector. This SPORT connector is compatible
with the EVAL-CED1Z, which is available from Analog Devices.
External sockets are also provided for signals.
and AD7401A. Various link options are explained in the Link
Options section. Interface to this board using a standard 2-row
34-pin SPORT connector. This SPORT connector is compatible
with the EVAL-CED1Z, which is available from Analog Devices.
External sockets are also provided for signals.
FUNCTIONAL BLOCK DIAGRAM
EXTERNAL
SUPPLY
OPTIONAL
ANALOG BUFFER
BUFFERED OUTPUT
SIGNAL
INPUT SIGNAL
V
DD1
V
IN+
V
IN–
GND
1
V
DD2
MDAT
MCLKOUT/
MCLKIN
GND
2
EXTERNAL
SUPPLY
POWER
SUPPLY
CIRCUITS
07
64
3-
0
01
OPTIONAL
ANALOG BUFFER
BUFFERED OUTPUT
SIGNAL
INPUT SIGNAL
AD7400A/
AD7401A
S
P
O
RT
CO
NN
E
CT
O
R
Figure 1
.