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REV. 0
AD5426/AD5432/AD5443
–19–
V
DD
V
SS
V
OUT
P1–13
P1–5
P1–4
P1–2
P1–3
P1–19
P1–20
P1–21
P1–22
P1–23
P1–24
P1–25
P1–26
P1–27
P1–28
P1–29
P1–30
SCLK
SDIN
SYNC
LDAC
SCLK
SDIN
SYNC
SDO/
LDAC
SCLK
SDIN
SYNC
SDO/
LDAC
SDO
GND
I
OUT
2
V
DD
R
FB
V
REF
V
REF
V
DD1
V
REF
V
DD
+V
IN
V
OUT
TRIM
GND
I
OUT
1
AD5426/
AD5432/
AD5443
U1
U3
C6
4.7pF
C1
0.1 F
C2
10 F
C7
10 F
+
C8
0.1 F
P2–3
P2–2
P2–1
P2–4
AGND
V
SS
V
DD1
V
DD
C11
0.1 F
C12
10 F
C3
10 F
C4
0.1 F
C5
0.1 F
C13
0.1 F
C14
10 F
C15
0.1 F
C16
10 F
+
+
+
U2
ADR01AR
4
5
2
6
J2
J1
7
4
3
2
6
V–
V+
+
C9
10 F
C10 0.1 F
+
TP1
R1 = 0
AD8065AR
8
10
4
5
6
1
2
3
7
9
J3
J4
J5
J6
LK2
LK1
A
B
Figure 19. Schematic of AD5426/AD5432/AD5443 Evaluation Board
EVALUATION BOARD FOR THE AD5426/AD5432/AD5443
SERIES OF DACS
The board consists of a 12-bit AD5443 and a current to voltage
amplifier AD8065. Included on the evaluation board is a 10 V
reference ADR01. An external reference may also be applied via
an SMB input.
The evaluation kit consists of a CD-ROM with self-installing
PC software to control the DAC. The software simply allows
the user to write a code to the device.
OPERATING THE EVALUATION BOARD
Power Supplies
The board requires
±
12 V, and +5 V supplies. The +12 V V
DD
and V
SS
are used to power the output amplifier, while the +5 V
is used to power the DAC (V
DD1
) and transceivers (V
CC
).
Both supplies are decoupled to their respective ground plane
with 10 F tantalum and 0.1 F ceramic capacitors.
Link1 (LK1) is provided to allow selection between the on-board
reference (ADR01) or an external reference applied through J2.
For the AD5426/AD5432/AD5443 use Link2 in the SDO position.
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