EVAL-AD7891-1CB Datasheet, PDF(5/12 Page) Analog Devices – Evaluation Board for Single Supply, 12-Bit 454 kSPS ADC

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EVAL-AD7891-1CB Datasheet, PDF (5/12 Pages) Analog Devices – Evaluation Board for Single Supply, 12-Bit 454 kSPS ADC

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EVAL-AD7891-1CB

SOCKETS

There are ten input sockets relevant to the operation of the

AD7891-1 on this evaluation board. The function of these

sockets is outlined in Table IV.

Table IV. Socket Functions

Socket

Function

SKT1 - SKT 8

SKT9

Sub-Minature SMB Socket for AIN1 - AIN8.

Sub-Minature SMB Socket for external

reference.

SKT10

Sub-Minature SMB Socket for CONVST

input.

CONNECTORS

There are two connectors on the AD7891-1 evaluation board as

outlined in Table V.

TABLE V. CONNECTOR FUNCTIONS

Connector Function

96-Way Connector for Parallel Interface connec-

tions.

9-Way D-Type Connector for Serial Interface

connections.

OPERATING WITH THE EVAL-CONTROL BOARD

The evaluation board can be operated in a stand-alone mode or

operated in conjunction with the EVAL-CONTROL BOARD.

The EVAL-CONTROL BOARD is available from Analog

Devices under the order entry "EVAL-CONTROL BOARD".

When operated with this control board, all supplies and control

signals for operating the AD7891-1 are provided by the EVAL-

CONTROL BOARD when it is run under control of the

AD7891-1 software which is provided with the AD7891-1

evaluation board package. The EVAL-CONTROL BOARD will

also operate with all Analog Devices evaluation boards which

end with the letters CB in their title.

The 96-way connector on the EVAL-AD7891-1CB plugs

directly into the 96-way connector on the EVAL-CONTROL

BOARD. The EVAL-CONTROL BOARD is powered from a

12V ac transformer. This is a standard 12V ac 1A transformer.

These can also be ordered from Analog Devices under the order

entry "EVAL-110VAC-US' for a 110V compatible transformer

and "EVAL-220VAC-EU" or EVAL-220VAC-UK for a 220V

compatible transformer. These transformers are also available

for other suppliers including Digikey (110V models) and

Campbell Collins (220V models). The EVAL-CONTROL

BOARD generates all the required supplies for itself and the

EVAL-AD7891-1CB.

Connection between the EVAL-CONTROL BOARD and the

serial port of a PC is via a standard RS-232 cable which is

provided as part the EVAL-CONTROL BOARD package.

Please refer to the manual which accompanies the EVAL-

CONTROL BOARD for more details on the EVAL-CON-

TROL BOARD package.

The CONVST for the EVAL-AD7891-1CB can be provided

externally or by the EVAL-CONTROL BOARD. The maxi-

mum sampling rate of 454 kSps is supported when using either

source for the CONVST signal.

REV. A

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