EVAL-AD7401AEDZ Analog Devices Inc, EVAL-AD7401AEDZ Datasheet - Page 4

• Manufacturer Part Number: EVAL-AD7401AEDZ
• Description: EVALUATION BOARD I.C.
• Manufacturer: Analog Devices Inc
• Series: iCoupler®r

Specifications of EVAL-AD7401AEDZ

• Number Of Adc's: 1
• Number Of Bits: 16
• Sampling Rate (per Second): 20M
• Data Interface: Serial
• Inputs Per Adc: 1 Differential
• Input Range: ±320 mV
• Power (typ) @ Conditions: 105mW @ 20MSPS
• Voltage Supply Source: Single Supply
• Operating Temperature: -40°C ~ 125°C
• Utilized Ic / Part: AD7401A
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

EVAL-AD7400A/AD7401A
Link No.
J13
J14
MCLKOUT/MCLKIN
MDAT
Table 2. Link Positions on the Packaged EVAL-AD7400A/AD7401A
Link No.
J7
J8
J9
J10
J11
J13
J14
MCLKOUT/MCLKIN
MDAT
SETUP CONDITIONS
Care should be taken before applying power and signals to
the evaluation board. It is necessary to ensure that all links are
positioned correctly for the chosen operating mode. There are
two different modes in which to operate the evaluation board:
operate the board with the EVAL-CED1Z or use the board as a
standalone board.
Table 2 shows the position in which all the links are set when
the evaluation board is packaged. When the board is shipped,
it is assumed that the user will be operating with the EVAL-
CED1Z board. The links are set so that the control signals are
supplied by the EVAL-CED1Z. The V
Function
This link selects the AD797 (U3) to buffer the analog input from the J3 SMB.
This link option selects the source of the V
This is a solder link that selects the destination of MCLKOUT for the AD7400A and the source of MCLKIN for the AD7401A.
This is a solder link that selects the destination of the MDAT for the AD7400A or AD7401A.
Position
A
A
A
B
B
B
C
B
B
In Position A, the analog input signal supplied to the J3 SMB connector is fed directly to the AD797 (U3) for
buffering. This link option should be used in conjunction with J14, which should be placed in Position A.
In Position B, the analog input signal supplied to the J3 SMB connector is fed directly to the V
AD7400A and AD7401A, therefore it is not buffered. This link option should be used in conjunction with J14,
which should be placed in Position B.
In Position A, the V
should be used in conjunction with J13, which should be placed in Position A.
In Position B, the V
should be used in conjunction with J13, which should be placed in Position B.
In Position C, the V
In Position A, the MCLKOUT/MCLKIN pin of the AD7400A or AD7401A is tied directly to GND
In Position B, the MCLKOUT/MCLKIN pin of the AD7400A or AD7401A is connected directly to J7, that is, the signal is
received/supplied by either the EVAL-CED1Z or an external source via the J5 SMB socket.
In Position A, the MDAT pin of the AD7400A or AD7401A is tied directly to GND
In Position B, the MDAT pin of the AD7400A or AD7401A is connected directly to J8, that is, the signal is received by
either the EVAL-CED1Z or an external source via the J6 SMB socket.
Function
The MCLKOUT signal from the AD7400A is supplied to the EVAL-CED1Z. The MCLKIN signal from the
AD7401A is supplied by the EVAL-CED1Z.
The MDAT signal from the AD7400A or AD7401A is supplied directly to the EVAL-CED1Z.
The V
an external source via the J4 connector.
The V
should be used in conjunction with J11, which should be placed in Position B.
The analog input signal supplied to the J2 SMB is fed directly to the V
thus it is not buffered. This link option should be used in conjunction with J10, which should be placed
in Position B.
The analog input signal supplied to the J3 SMB is fed directly to the V
AD7401A, thus it is not buffered.
The V
The MCLKOUT/MCLKIN pin of the AD7400A or AD7401A is connected directly to J7.
The MDAT pin of the AD7400A or AD7401A is connected directly to J8.
DD1
DD2
IN
IN
+ analog input to the AD7400A or AD7401A is not buffered by the AD797 (U2). This link option
− analog input to the AD7400A or AD7401A is tied directly to AGND.
supply, which is the
supply (the nonisolated supply) for the AD7400A or AD7401A is supplied by a 3.3 V supply from
IN
IN
IN
− analog input to the AD7400A or AD7401A is not buffered by the AD797 (U3). This link option
− analog input to the AD7400A or AD7401A is tied directly to GND
− analog input to the AD7400A or AD7401A is buffered by the AD797 (U3). This link option
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IN
− analog input to the AD7400A or AD7401A.
supply for the isolated side of the device, must be supplied
by an external source via the J1-1 connector. The V
which is the supply for the nonisolated side of the device, must
be supplied by 3.3 V from an external source via the J4 connector.
The board is configured to enable the user to supply a single-
ended input signal to the V
V
J13, and J14 links can be modified to enable a differential signal
to be applied to the
The EVAL-AD7400A/AD7401A is configured to accept analog
input signals directly from the user’s source. Alternatively, the
AD797
input signals if required.
IN
− terminal of the ADC is connected to GND. The J10, J11,
op amps (U2, U3) can be used to buffer the analog
AD7400A
IN
+ input of the AD7400A or AD7401A,
IN
IN
2
.
− input of the AD7400A or
+ terminal of the ADC while the
or
AD7401A
1
.
2
.
IN
+ input of the
inputs if required.
DD2
supply,