EVAL-ADGS1412SDZ Datasheet, PDF (4/12 Pages) Analog Devices – SPI interface with error detection

UG-1067
EVAL-ADGS1412SDZ User Guide
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 by the SDP when Link LK1 is in
Position B. When controlling the ADGS1412 by another method
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.
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 EVAL-
ADGS1412SDZ board that must be set for the required operating
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 EVAL-
ADGS1412SDZ, LK1 must be in Position B to avoid damage to
the SDP.
Table 1. Link Options for SDP Control (Default)
Link Number Option
LK1
B
LK2
B
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.
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