Evaluation Board Hardware; Power Supplies; Input Signals; Link Options - Analog Devices EVAL-ADGS1412SDZ User Manual

UG-1067

EVALUATION BOARD HARDWARE

POWER SUPPLIES

Connector J1 provides access to the supply pins of the ADGS1412.
VDD, GND, and VSS on J1 link to the appropriate pins on the
ADGS1412. For dual-supply voltages, the evaluation board can
be powered from ±4.5 V to ±16.5 V. For single-supply voltages,
the GND and VSS terminals must connect together and power the
evaluation board with 5 V to 20 V. Additionally, 3.3 V is supplied to
the VL pin of the ADGS1412
Position B. When controlling the
other than the SDP, supply between 2.7 V and 5.5 V to the VL pin
of the ADGS1412 via the EXT_VL screw terminal input on J1.
LK1 should be in Position A.

INPUT SIGNALS

Two screw connectors, J2 and J3, are provided to connect to
both the source and drain pins of the ADGS1412. Additional
subminiature Version B (SMB) connector pads are available if
extra connections are required.
Each trace on the source and drain side includes two sets of
0603 pads, which can place a load on the signal path to ground.
Table 2. Link Functions
Link Number Function
LK1 This link selects the source of the VL voltage supplied to the ADGS1412.
Position A selects EXT_VL from J1.
Position B selects the 3.3 V from the SDP.
LK2 This link selects how a hardware reset is performed.
Position A indicates the SW1 push button performs a hardware reset.
Position B indicates the SDP can perform a hardware reset.
by the SDP when Link LK1 is in
ADGS1412 by another method
EVAL-ADGS1412SDZ User Guide
A 0 Ω resistor is placed in the signal path and can be replaced
with a user defined value. The resistor combined with the 0603
pads can create a simple resistor-capacitor (RC) filter.

LINK OPTIONS

A number of link options are provided on the
ADGS1412SDZ
conditions before using. Table 1 describes the positions of the
links to control the evaluation board via the SDP board using a
PC and external power supplies. The functions of these link
options are described in detail in Table 2.
When using the SDP in conjunction with the
ADGS1412SDZ, LK1 must be in Position B to avoid damage to
the SDP.
Table 1. Link Options for SDP Control (Default)
Link Number
LK1
LK2
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board that must be set for the required operating
Option
B
B
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