EVAL-AD4111SDZ
User Guide
UG-1124
Rev. A | Page 5 of 26
EVALUATION BOARD HARDWARE
DEVICE DESCRIPTION
The
AD4111
is a highly accurate, high resolution, multiplexed,
Σ-Δ ADC with eight single-ended or four differential voltage
inputs and four current inputs, a voltage range of ±10 V, and
four current channels operating from the standard range of 0 mA
to 20 mA (with an overrange of −0.5 mA to +24 mA). The
AD4111
features an open wire detection for voltage channels.
The maximum channel to channel scan rate is 6.21 kSPS (161 µs)
for fully settled data. The output data rates range from 1.25 SPS
to 31.25 kSPS. The device includes integrated analog reference
buffers, an integrated precision 2.5 V reference, and an integrated
oscillator.
See the
AD4111
data sheet for complete specifications. Full
details on the EVAL-AD4111SDZ are available on the product
page on the Analog Devices website.
HARDWARE LINK OPTIONS
See Table 1 for the default link options. By default, the board is
powered from the
SDP-B
board connected to J8 (
EVAL-SDP-
CB1Z
). The isolated voltage regulator (U3) output is set to 5 V.
EVALUATION BOARD SETUP PROCEDURE
After following the instructions in the Software Installation
Procedures section, set up the evaluation board and the
SDP-B
board as detailed in this section.
The evaluation software and drivers must be installed before
connecting the EVAL-AD4111SDZ and the
SDP-B
board to the
USB port of the PC to ensure that the PC correctly recognizes
the evaluation system.
Configuring the Evaluation and SDP Boards
Use the following procedure to configure the boards:
1.
Connect the
SDP-B
board to Connector A or Connector B
on the EVAL-AD4111SDZ board. Screw the two boards
together using the plastic screw and washer set included in
the evaluation board kit to connect the boards firmly together.
2.
Ensure that LK3 is in Position B (SDP).
3.
Connect the
SDP-B
board to the PC using the USB cable.
Table 1. Default Link and Solder Link Options
Link
Default Option
Description
LK1
Inserted
Connects the on-board external reference
ADR4525ARZ
(U2) to
AD4111BCPZ
(U1). Remove LK1 if using a
different single-ended external reference.
LK2
Inserted
Connects VCOM to GND_ISO. This configuration is typical for single-ended measurement. Remove LK2 to set
the custom common analog input for single-ended channels. VCOM is available on Pin 5 of J1 or J4.
LK3
B (SDP)
Selects the power supply voltage.
A: board is powered from the external dc power supply connector, J6 or J7.
B: board is powered from the SDP connector, J8.
R37
Open
Sets the
ADuM5411
(U3) isolated regulator output voltage.
Open: +VA_ISO = 5 V.
Short: +VA_ISO = 3.3 V.
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