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0.1
µ
F
V
DD
+5 V
RFB
INV
AGNDF
AGNDS
DAC
DAC Latch
Input
Register
DAC8831
+V
−
V
SDI
SCLK
LDAC
V
OUT
R
FB
R
INV
V
REF
−
S V
REF
−
F
Serial Interface
and Control Logic
CS
+2.5 V
+
0.1
µ
F 10
µ
F
DGND
V
O
= 0 to +V
REF
OPA277
OPA704
OPA727
V
OUT_UNI
+
D
2
16
ǒ
V
REF
) V
GE
Ǔ
) V
ZSE
) INL
DAC8830
DAC8831
SLAS449D – FEBRUARY 2005 – REVISED SEPTEMBER 2007
Figure 46. Unipolar Output Mode of DAC8831
Assuming a perfect reference, the worst-case output voltage may be calculated from the following equation:
Unipolar Mode Worst-Case Output
Where:
V
OUT_UNI
= Unipolar mode worst-case output
D = Code loaded to DAC
V
REF
= Reference voltage applied to part
V
GE
= Gain error in volts
V
ZSE
= Zero-scale error in volts
INL = Integral nonlinearity in volts
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