Evaluation Board Hardware; Power Supplies; Link Options; Daughter Board Link Options - Analog Devices EVAL-AD5341DBZ User Manual

EVAL-AD5341DBZ User Guide

EVALUATION BOARD HARDWARE

POWER SUPPLIES

The EVAL-AD5341DBZ evaluation board can be powered
either from the SDP-B port or externally by the J5 and J6
connectors, as described in Table 1.
The nanoDAC® EVAL-MBnanoDAC-SDZ
single and dual power supplies.
Both AGND and DGND inputs are provided on the
AD5341DBZ evaluation board. The AGND and DGND planes
are connected at one location on the EVAL-MBnanoDAC-SDZ. It
is recommended that AGND and DGND not be connected
elsewhere in the system to avoid ground loop problems.
All supplies are decoupled to ground with 10 μF tantalum and
0.1 μF ceramic capacitors.
Table 1. Power Supply Connectors
Connector No. Label
J5, Pin 1 (J5-1) VDD
J5, Pin 2 (J5-2) AGND
J5, Pin 3 (J5-3) VSS
J6, Pin 1 (J6-1) VLOGIC
J6, Pin 2 (J6-2) DGND

LINK OPTIONS

Various link options are incorporated in the
SDZ and must be set for the required operating conditions before
using the EVAL-AD5341DBZ. Table 2 describes the positions of
Table 4. Link Functions
Link Number Function
REF1, REF2 This link selects the reference source.
Position EXT selects an off board voltage reference via the appropriate EXT_REF connector.
Position VDD selects VDD as the reference source.
Position 4.096V selects the on-board 4.096 V reference as the reference source.
Position 2.5V selects the on-board 2.5 V reference as the reference source.
Position 5V selects the on-board 5 V reference as the reference source.
REF3, REF4 This link selects the reference source.
Position EXT selects an off board voltage reference via the appropriate EXT_REF connector.
Position VDD selects VDD as the reference source.
Position 4.096V selects the on-board 4.096 V reference as the reference source.
Position 2.5V selects the on-board 2.5 V reference as the reference source.
Position 5V selects the on-board 5 V reference as the reference source.
LK5 This link selects the positive DAC analog voltage source.
Position A selects the internal voltage source from the
Position B selects the internal voltage source, 3.3 V, from the
Position C selects the external supply voltage, V
LK6 This link selects the V
Position +3V3 selects the digital voltage source from the
Position VLOGIC selects an external digital supply voltage (V
LK7 This link selects the negative DAC analog voltage source.
Position A selects V
Position B selects AGND.
motherboard supports
EVAL-
Voltage
Analog positive power supply, V
5.5 V single and dual supply
Analog ground
Analog negative power supply, V
−5.5 V dual supply
Digital supply from 1.8 V to V
Digital ground
EVAL-MBnanoDAC-
voltage source.
LOGIC
.
SS
the links to control the
using a PC and external power supplies. The functions of these link
options are described in detail in Table 4. The positions listed in
Table 2 to Table 4 match the evaluation board imprints (see
Figure 11).
Table 2. Link Options Setup for
Link Number
REF1
REF2
REF3
REF4
LK5
LK6
LK7

DAUGHTER BOARD LINK OPTIONS

; The EVAL-AD5341DBZ
DD
links control the settings for the reference BUF and CLR pins.
Table 3 shows how the links are configured.
;
SS
Table 3. Link Options for Daughter Board
Link Number
DD
LK1
LK2
SDP-B board.
ADP121
.
DD
SDP-B board (3.3 V).
).
LOGIC
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EVAL-AD5341DBZ via the
SDP-B Control (Default)
Position
EXT
EXT
EXT
EXT
C
+3V3
B
daughter board has two link options. The
Pin Position
BUF A (unbuffered, default)
B (buffered)
CLR A (no operation, default)
B (zero scale)
on the motherboard.
UG-982
SDP-B board