EVAL-AD7912_15 Datasheet, PDF (6/16 Pages) Analog Devices – Evaluation Board for 1 MSPS, 2-Channel, 12-/10-Bit ADCs

EVAL-AD7912/AD7922
SOCKETS
There are 13 input/output sockets relevant to the operation of
the AD7912/AD7922 on this evaluation board. The functions of
these sockets are outlined in Table 5.
Table 5. Socket Functions
Socket Function
J1
96-way connector used to interface to the EVAL-
CONTROL-BRD2.
J2
External +12 V, −12 V, and AGND power connector.
J3
External VDD and AGND power connector.
J4
Subminiature BNC socket for Analog Input
Channel 0, VIN0.
J5
Subminiature BNC socket for Analog Input
Channel 1, VIN1.
J6
Subminiature BNC socket for external SCLK.
J7
Subminiature BNC socket for external DIN.
J8
Subminiature BNC socket for DOUT signal.
J9
Subminiature BNC socket for external CS.
J10
Subminiature BNC socket for bipolar input signal to
bias-up circuit, AIN1.
J11
Subminiature BNC socket for bipolar input signal to
bias-up circuit, AIN.
J12
Subminiature BNC socket for output from bias-up
circuit, VBIASED1.
J13
Subminiature BNC socket for output from bias-up
circuit, VBIASED.
OPERATING WITH THE EVAL-CONTROL-BRD2
The evaluation board can be operated in a standalone mode or in
conjunction with the EVAL-CONTROL-BRD2, which is available
from Analog Devices. When operated with this control board,
all supplies and control signals to operate the AD7912/AD7922
are provided by the EVAL-CONTROL-BRD2.
Software to communicate with the control board and AD7912/
AD7922 is provided with the AD7912/AD7922 evaluation board
package. This EVAL-CONTROL-BRD2 will also operate with
all Analog Devices evaluation boards that end with the letters
CB in their part number.
The 96-way connector on the EVAL-AD7912/AD7922 plugs
directly into the 96-way connector on the EVAL-CONTROL-
BRD2. The EVAL-CONTROL-BRD2 provides all the supplies
for the AD7912/AD7922 evaluation board. It is powered from a
12 V ac transformer. This is a standard 12 V ac transformer capable
of supplying 1 A current; it is available as an accessory from Analog
Devices under the following part numbers:
EVAL-110VAC-US: for use in the U.S. or Japan
EVAL-220VAC-UK: for use in the U.K.
EVAL-220VAC-EU: for use in Europe
These transformers are also available from other suppliers,
including Digi-Key Corporation (U.S.) and Campbell Collins
(U.K.). Connection between the EVAL-CONTROL-BRD2 and
the serial port of a PC is via a standard printer port cable provided
as part of the EVAL-CONTROL-BRD2 package. Refer to the
manual accompanying the EVAL-CONTROL-BRD2 for more
details on the EVAL-CONTROL-BRD2 package. Figure 3 shows
the complete ADC evaluation tools kit.
POWER
SUPPLY
EVALUATION SOFTWARE AND
TECHNICAL DOCUMENTATION CD
PRINTER
PORT CABLE
EVALUATION
CONTROL BOARD
ADC
EVALUATION BOARD
Figure 3. ADC Evaluation Tools Kit
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