Analog Devices AD7401 Evaluation Board EVAL-AD7401EDZ EVAL-AD7401EDZ データシート
製品コード
EVAL-AD7401EDZ
Evaluation Board for
the AD7400 and AD7401
EVAL-AD7400/AD7401
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 AD7400 and AD7401
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 AD7400
and AD7401, which are
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 Analog Devices Inc., iCoupler® technology. The AD7400
and AD7401 operate from a 5 V power supply and accept a
differential input signal of ±200 mV (±320 mV full scale).
speed, 1-bit data stream with on-chip digital isolation based
on Analog Devices Inc., iCoupler® technology. The AD7400
and AD7401 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 mod-
ulator, 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 appropriate
digital filter. The serial I/O can use a 5 V or a 3 V supply (V
ulator, 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 appropriate
digital filter. The serial I/O can use a 5 V or a 3 V supply (V
DD2
).
Full details on the AD7400 and AD7401 are available in the
AD7400 and AD7401 data sheets, which are available from
Analog Devices and should be consulted in conjunction with
this data sheet when using the evaluation board.
AD7400 and AD7401 data sheets, which are available 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 AD7400 and
AD7401. 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 a number of signals.
AD7401. 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 a number of signals.
FUNCTIONAL BLOCK DIAGRAM
EXTERNAL
SUPPLY
OPTIONAL
ANALOG BUFFER
BUFFERED OUTPUT
SIGNAL
INTPUT SIGNAL
V
DD1
V
IN
+
V
IN
–
GND
1
V
DD2
MDAT
MCLKOUT/
MCLKIN
GND
2
EXTERNAL
SUPPLY
POWER
SUPPLY
CIRCUITS
07
55
2-
0
01
OPTIONAL
ANALOG BUFFER
BUFFERED OUTPUT
SIGNAL
INTPUT SIGNAL
AD7400/
AD7401
S
P
O
RT
CO
NN
E
CT
O
R
Figure 1
.