Evaluation Board Hardware; Power Supplies; Link Options; Digital Interface - Analog Devices EVAL-AD5161DBZ User Manual

Evaluation board for the ad5161 digital potentiometer
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EVAL-AD5161DBZ User Guide

EVALUATION BOARD HARDWARE

POWER SUPPLIES

The EVAL-MB-LV-SDZ supports using single power supplies.
The evaluation board can be powered either from the SDP port
or externally by the J1 and J2 connectors, as described in Table 1.
All supplies are decoupled to ground using 10 µF and 0.1 µF
ceramic capacitors.
Table 1. Connector Functions
Connector No.
J1-1
J1-2
J2-1
J2-2
Table 2. Link Functions
Link No.
A5
A11
A12
Table 3. Digital Interface Link Functions
Link No.
P9
P10
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Label
Description
VDD
Analog positive power supply, V
AGND
Analog ground
VLOGIC
Digital supply
DGND
Digital ground
Power Supply
Options
V
Digital supply select options:
LOGIC
3.3 V (from the SDP board)
VLOGIC EXT (external supply from the J2 connector)
V
Positive power supply select options:
DD
5 V (from the SDP board)
3.3 V (from the SDP board)
VDD (external supply from the J1 connector)
GND
AGND
Options
Digital interface select options:
SPI (use SPI digital interface).
I
2
C (use I
2
C digital interface).
Chip select options (I
2
C mode only):
Left side: address pin is connected to AGND.
Right side: address pin is connected to V
This jumper is unused in SPI mode.

LINK OPTIONS

Several link and switch options are incorporated on the EVAL-
MB-LV-SDZ and
up before using the evaluation system. The functions of these
link options are described in detail in Table 2 through Table 6.
By default, the evaluation system is set up to be controlled by a
PC via the SDP board.

DIGITAL INTERFACE

The
EVAL-AD5161DBZ
digital interface, depending on the position of the P9 jumper. If
the device is configured in I
I
2
C address. See Table 3 for further details.
DD
.
LOGIC
Rev. 0 | Page 3 of 16
EVAL-AD5161DBZ
boards and must be set
can be configured as an I
C mode, the P10 jumper selects the
2
Min
2.7 V
2.7 V
Default Position
3.3 V
3.3 V
AGND
Default Position
SPI
Left
UG-624
C or SPI
2
Voltage
Max
5.5 V
V
DD

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