Datasheet

EVAL-AD5932EB
Rev. 0 | Page 4 of 12
LINK OPTIONS
The link options on the evaluation board should be set for the required operating setup before using the board. The functions of these
links are described in
Table 1.
Table 1. Link Options
Link No. Function Position Descriptions Default
LK1
This link selects the power supply source for the
digital circuitry (DVDD).
Position A selects J2 as the digital circuitry power supply source.
Position B selects the 3.3 V from the
ADP3303 regulator that is
powered from the USB port as the digital circuitry power
supply source.
Position B
LK2
This link controls whether the serial interface of the
AD5932 is being driven from a PC or being used in
standalone mode.
Position A connects FSYNC, SCLK, and SDATA pins to the
USB controller (controlled from the software).
Position B connects FSYNC, SCLK, and SDATA pins to their
respective SMBs (J3, J4, and J5).
Position A
LK3 This link selects the MCLK source. Position A selects the on-board oscillator (50 MHz provided).
Position B selects an SMB J13 (labeled MCLK).
Position A
LK4
This link selects whether the CTRL signal is being
driven by software or externally through an SMB.
Position A connects the CTRL pin to an SMB J6 (labeled CTRL).
Position B connects the CTRL pin to the USB controller for
software control.
Position B
LK5
This link selects whether the INTERRUPT signal is being
driven by software or externally through an SMB.
Position A connects the INTERRUPT pin to an SMB J7
(labeled INTERRUPT).
Position B connects the INTERRUPT pin to the USB controller
for software control.
Position B
LK6
This link selects whether the STANDBY signal is being
driven by software or externally through an SMB.
Position A connects the STANDBY pin to the STANDBY SMB
J8 (labeled STANDBY).
Position B connects the STANDBY pin to the USB controller
for software control.
Position B
LK7
Insert this link to connect the CAP/2.5 V pin to
DVDD if operating DVDD at < 2.5 V.
Removed
LK8
This link selects the power supply source for the
analog circuitry (AVDD).
Position A selects J14 as the analog circuitry supply source.
Position B connects AVDD to DVDD through a ferrite bead L1
(600 Ω @ 100 MHz) and a 1.6 Ω resistor (R16).
Position B