Datasheet

APPLICATION INFORMATION
BASIC OPERATION
13 14 15 16 17 18 19 20 21 22 23 24
IOV
DD
DV
D
D
V
-0
OUT
R -0
FB2
R -0
FB1
SGND
-0
NC SGND-1 R -1
FB1
R -1
FB2
V
-1
OUT
NC
NC
AV
DD
V
MON
AV
SS
REFGND-B
REF-B
REF-A
REFGND-A
AV
SS
AGND
AV
DD
NC
36
35
34
33
32
31
30
29
28
27
26
25
1
2
3
4
5
6
7
8
9
10
11
12
NC
CS
SCLK
SDI
SDO
LDAC
RST
GPIO-0
GPIO-1
UNI/BIP-A
DGND
NC
CS
SCLK
SDI
SDO
LDAC
RST
IOV
DD
DV
DD
V -0
OUT
V -2
OU
T
AIN
10kW
10kW
48 47 46 45 44 43 42 41 40 39 38 37
UNI/BIP-B
AIN
V
-2
OUT
R -2
FB2
R -2
F
B1
SGND
-2
NC
SGND-3
R -3
FB1
R -3
FB2
V -3
O
UT
NC
DAC8234
+
+
0.1 Fm
10 Fm
+
0.1 Fm
10 Fm
V -3
OUT
V
MON
REF-B
REF-A
AV
SS
AV
DD
+
0.1 Fm
10 Fm
0.1 Fm
10 Fm
0.1 Fm
10 Fm
0.1 Fm
10 Fm
+
+
V -1
OU
T
AV =+15V,AV = 15V,DV =+5V,IOV =+1.8to+5V,REF-A=+5V,andREF-B=+2.5V.
ThegainbitsintheCommandRegisterare:GAIN-0= ‘0’,GAIN-1= ‘1’,GAIN-2= ‘0’,andGAIN-3= ‘1’.
TheDACsaresettothefollowinggains:DAC-0=x2,DAC-1=x4,DAC-2=x2,andDAC-3=x4.
Theoutputrangesare:V -0= 5Vto+5V
-
-
DD SS DD DD
OUT
NOTES:
V -1= 10Vto+10V,
V -2=0Vto+5V,
V -3=0Vto+10V.
-
OUT
OUT
OUT
DAC8234
www.ti.com ........................................................................................................................................... SBAS464A – AUGUST 2009 – REVISED SEPTEMBER 2009
The DAC8234 is a highly-integrated device with high-performance reference buffers and output buffers, greatly
reducing the printed circuit board (PCB) area and cost. On-chip reference buffers eliminate the need for a
negative external reference. Configurable on-chip output buffers support four different output modes. Figure 44
shows a basic application for the DAC8234.
Figure 44. Basic Application Example
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