EVAL-AD7403FMCZ Datasheet, PDF (9/20 Pages) Analog Devices – Full featured evaluation board

EVAL-AD7403FMCZ User Guide
UG-683
LINK CONFIGURATION OPTIONS
There are multiple link options that must be set correctly to
select the appropriate operating setup before you begin using
the evaluation board. The functions of these options are
outlined in Table 2.
SETUP CONDITIONS
Care should be taken before applying power and signals to the
evaluation board to ensure that all link positions are as required
by the operating mode. There are two modes in which to operate
the evaluation board. The evaluation board can be operated in
SDP-H1 controlled mode to be used with the the EVAL-SDP-CH1Z
board, or the evaluation board can be used in standalone mode.
The Default Position column of Table 2 shows the default
positions in which the links are set when the evaluation board is
packaged. When the board is shipped, it is set up to operate in
SDP-H1 controlled mode, with the power supplied from the
EVAL-SDP-CH1Z board and the analog supply rail (VDD1) being
supplied via the on-board isoPower® ADuM6000 dc-to-dc converter.
Table 2. Link Options
Category
Link
Power Supplies LK1
LK5
LK2
Analog Input LK7
LK8
Serial Interface LK3
LK4
Default
Position
A
Removed
A
Removed
Inserted
A
A
Function
This link selects the AD7403 VDD1 supply source. Remove LK5 if using either Position A or Position B.
Position A: VDD1 is supplied from the ADuM6000 on-board device.
Position B: VDD1 is supplied externally via Connector J5.
When LK5 is inserted, VDD1 is supplied via a step-down dc-to-dc regulator via J7. Remove LK5 if VDD1 is
supplied via LK1.
This link selects the AD7403 VDD2 supply source.
Position A: VDD2 is supplied from the EVAL-SDP-CH1Z board.
Position B: VDD2 is supplied from the on-board 5 V regulator.
Position C: VDD2 is supplied externally via Connector J6.
When LK7 is inserted, AIN+ is shorted to ground. Remove LK7 if a signal is applied to AIN+.
When LK8 is inserted, AIN− is shorted to ground. Remove LK8 if a signal is applied to AIN−.
This link is used to select the MCLK source for the serial interface.
Position A: MCLK is sourced from the EVAL-SDP-CH1Z board.
Position B: Do not use.
Position C: MCLK is sourced from the J3 SMB jack. (Standalone mode.)
This link is used to route the MDAT output for the serial interface.
Position A: MDAT is sent to the EVAL-SDP-CH1Z board.
Position B: MDAT is sent to the J4 SMB jack. (Standalone mode.)
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