Datasheet

EVAL-AD7352/AD7356/AD7357
Rev. 0 | Page 7 of 16
SOCKETS
There are 12 SMB input sockets relevant to the operation of the
AD7352, AD7356, and AD7357 on this evaluation board. All of
these sockets are used for applying an externally generated
signal to the evaluation board. When operating the board with
the EVAL-CED1Z, the only external sockets necessary are those
used to supply the analog inputs to the ADC (that is, VA and VB).
All other sockets are optional, and if they are not used, their
signals are supplied by the CED. Most of these sockets are used
when operating the board as a standalone unit because in this
mode of operation all required signals are supplied from external
sources. The functions of these sockets are outlined in Table 6.
Table 6. Socket Functions
Socket Function
VA
Subminiature BNC socket for a single-ended bipolar
analog input that is applied to the AD8138 for
buffering prior to the VA input of the ADC.
VB
Subminiature BNC socket for a single-ended bipolar
analog input that is applied to the AD8138 for
buffering prior to the VB input of the ADC.
EXT REF A
Subminiature BNC socket for an external reference
voltage to be applied to REFA or to access the
internal reference from the AD7352, AD7356, or
AD7357.
EXT REF A
Subminiature BNC socket for an external reference
voltage to be applied to REFB or to access the
internal reference from the AD7352, AD7356, or
AD7357.
EXT COM A
Subminiature BNC socket for an external common-
mode voltage to be applied to AD8138 common-
mode input for ADC A.
EXT COM B
Subminiature BNC socket for an external common-
mode voltage to be applied to AD8138 common-
mode input for ADC B.
SDATA
A
Subminiature BNC socket for SDATA
A
output.
SDATA
B
Subminiature BNC socket for SDATA
B
output.
CS Subminiature BNC socket for an external CS input.
SCLK Subminiature BNC socket for an external SCLK input.
CONNECTORS
There are four connectors on the AD7352/AD7356/AD7357
evaluation board, as outlined in Table 7 .
Table 7. Connector Functions
Connector Function
J13
96-way connector for the digital interface and
power supply connections.
J11 External V
DD
and AGND power connector.
J12 External V
DRIVE
and DGND power connector.
J14 External +5 V, −5 V, and AGND power connector.
OPERATING WITH THE EVAL-CED1Z
The evaluation board can be operated in a standalone mode or
in conjunction with the EVAL-CED1Z controller, available from
Analog Devices.
When interfacing the AD7352/AD7356/AD7357 evaluation board
directly to the CED, all supplies and control signals to operate the
AD7352/AD7356/AD7357 evaluation board are provided by the
EVAL-CED1Z. When interfacing the respective evaluation board
directly to the EVAL-CED1Z, throughput rates of up to 5 MSPS
are supported on the AD7356, of up to 3 MSPS are supported on
the AD7352, and of up to 4.2 MSPS are supported on the AD7357.
Software to communicate with the EVAL-CED1Z and the
AD7352/AD7356/AD7357 evaluation board is provided with
the AD7352/AD7356/AD7357 evaluation board package.
The 96-way connector on the AD7352/AD7356/AD7357
evaluation board plugs directly into the 96-way connector on
the EVAL-CED1Z. The EVAL-CED1Z provides all the supplies
for the evaluation board. It is powered from a 7 V, 15 W power
supply that accepts input voltages from 100 V to 240 V ac, and
it contains the relevant adaptors for worldwide use. The power
supply is provided with the EVAL-CED1Z.
Connection between the EVAL-CED1Z and the USB port of a
PC is via a standard USB 2.0 connection cable that is provided
as part of the EVAL-CED1Z package.