Evaluation Board Hardware; Power Supplies; Link Options; Moved Evaluation Board Hardware Section - Analog Devices EVAL-AD5693RSDZ User Manual

EVAL-AD5693RSDZ User Guide

EVALUATION BOARD HARDWARE

POWER SUPPLIES

The AD5693R evaluation board can be powered through the
SDP board or externally by the VPOS_EXT and AGND
connectors.
Both AGND and DGND inputs are provided on the board. The
AGND and DGND planes are connected at one location close to
the AD5693R. To avoid ground loop problems, it is recommended
not to connect AGND and DGND elsewhere in the system.
All supplies are decoupled to ground with 10 µF tantalum and
0.1 µF ceramic capacitors.
Table 2. Power Supply Connectors
Connector No. Voltage
J2, Pin 1 Analog positive power supply, V_EXT
J2, Pin 2 AGND
Table 4. Link Functions
Link No. Options
A1 This link selects the DAC digital voltage source.
Position A selects an external reference source via the SMB input, EXT_REF.
Position B selects the
Position C selects the
LINK Connect only if the
board is not connected.
A11 This link selects the DAC analog voltage source.
Position A VPOS is powered at 3.3 V.
Position B VPOS is powered from an unregulated USB supply.
Position C VPOS is powered from an external supply voltage (V_EXT).
REF192 external reference.
ADR431 external reference.
EVAL-AD5693RSDZ board of the
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LINK OPTIONS

Various link and switch options are incorporated on the
AD5693RSDZ evaluation board and must be set for the required
operating conditions before using the board. The functions of
these link options are described in detail in Table 4.
Table 3 describes the positions of the different links controlled
by the PC via the USB port. An SDP board operating in single-
supply mode is required.
Table 3. Link Options Setup for SDP Control (Default)
Link No. Options
A11 A
LINK Disconnected
A1 A
AD5693R is controlled through the PMOD connector and the SDP
UG-675
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