Datasheet

19
®
DAC7744
FIGURE 7. Integral Linearity and Differential Linearity Error Curves for Figure 8.
FIGURE 8. Dual-Supply Buffered Referenced with V
REF
L = –5V and V
REF
H = +5V (1/2 DAC7744).
NC
NC
NC
NC
V
OUT
A Sense
V
OUT
A
V
REF
L AB Sense
V
REF
L AB
V
REF
H AB
V
REF
H AB Sense
V
OUT
B Sense
V
OUT
B
48
47
46
45
44
43
42
41
40
39
38
37
DAC7744
+5V
–V
+V
–5V
V
OUT
V
OUT
1000pF
2200pF
+V
OPA2234
100Ω
1000pF
2200pF
100Ω
–V
LINEARITY ERROR AND
DIFFERENTIAL LINEARITY ERROR vs CODE
(DAC A, +25°C)
2.0
1.5
1.0
0.5
0
–0.5
–1.0
–1.5
–2.0
1.0
0.5
0
–0.5
–1.0
LE (LSB)DLE (LSB)
0000
H
2000
H
4000
H
6000
H
8000
H
Digital Input Code
A000
H
C000
H
E000
H
FFFF
H
2.0
1.5
1.0
0.5
0
–0.5
–1.0
–1.5
–2.0
1.0
0.5
0
–0.5
–1.0
LE (LSB)DLE (LSB)
LINEARITY ERROR AND
DIFFERENTIAL LINEARITY ERROR vs CODE
(DAC B, +25°C)
0000
H
2000
H
4000
H
6000
H
8000
H
Digital Input Code
A000
H
C000
H
E000
H
FFFF
H
LE (LSB)DLE (LSB)
LINEARITY ERROR AND
DIFFERENTIAL LINEARITY ERROR vs CODE
(DAC C, +25°C)
0000
H
2000
H
4000
H
6000
H
8000
H
Digital Input Code
A000
H
C000
H
E000
H
FFFF
H
2.0
1.5
1.0
0.5
0
–0.5
–1.0
–1.5
–2.0
1.0
0.5
0
–0.5
–1.0
LINEARITY ERROR AND
DIFFERENTIAL LINEARITY ERROR vs CODE
(DAC D, +25°C)
0000
H
2000
H
4000
H
6000
H
8000
H
Digital Input Code
A000
H
C000
H
E000
H
FFFF
H
2.0
1.5
1.0
0.5
0
–0.5
–1.0
–1.5
–2.0
1.0
0.5
0
–0.5
–1.0
LE (LSB)DLE (LSB)