EVAL-AD5761RSDZ
User Guide
UG-1151
Rev. 0 | Page 3 of 17
EVALUATION BOARD HARDWARE
POWER SUPPLIES AND DEFAULT LINK OPTIONS
The EVAL-AD5761RSDZ evaluation board can be powered
using the on-board
ADP5070
from a single voltage. The voltage
sources available are an external single supply via the PVIN_
3V–15V connector, the USB_POWER connector, and a supply
sourced from the SDP-B controller board (LK2 inserted).
Alternatively, the J4 connector can provide power to the board,
instead of the
ADP5070
, and it is intended for use with well-
regulated bench supplies. See Figure 2 for a functional block
diagram of the evaluation board.
With any of the possible options, set the link options on the
evaluation board for the required operating setup first before
supplying the board.
Each supply is decoupled to the relevant ground plane with
10 µF and 0.1 µF capacitors. Each device supply pin is again
decoupled with a 10 µF and 0.1 µF capacitor pair to the relevant
ground plane.
The analog and digital planes are connected at one location
close to the DAC. To avoid ground loop problems, do not
connect AGND and DGND elsewhere in the system.
Table 1. Quick Start Jumper Configuration for On-Board
ADP5070
, Bench Supply, and USB Port
Link No.
ADP5070
with LDOs
ADP5070
Bench Supply with LDOs
Bench Supply
LK7
Removed
Inserted
Not applicable
Not applicable
LK8
Removed
Inserted
Not applicable
Not applicable
LK14
Removed
Removed
Inserted
Inserted
LK_AVDD
A
B
A
B
LK_AVSS
A
B
A
B
LK_DVCC
A
B
A
B
LK_REF
B
B
B
B
B
B
A
A
LK_VOUT-
B
B
A
A
AD5761R
DV
CC
V
REFIN
/
V
REFOUT
V
DD
V
SS
PVIN_3V-15V
A
B
A
B
A
B
A
B
LK7
LK8 ON: –11V
LK8 OFF: –13V
LK7 ON: +21.1V
LK7 OFF: +23.2V
J4
PVIN
PGND
USB_POWER
SDP-B BOARD
CONNECTION
+V
D
AG
ND
–V
S
A B
A
B
LK8
LK2
+5V
+21V
–11V
+2.5V
V
REFIN
/
V
REFOUT
ADP5070
ADP7142
ADP7142
LK_DV
CC
LK_V
OUT+
LK_V
OUT–
ADP7142
LK_AV
DD
LK_V
REF
ADP7142
LK_AV
SS
16044-
002
Figure 2. Powering the EVAL-AD5761RSDZ Evaluation Board
