LINEARITY ERROR AND
DIFFERENTIAL LINEARITY ERROR vs CODE
(DAC A, +25°C)
LINEARITY ERROR AND
DIFFERENTIAL LINEARITY ERROR vs CODE
(DAC A, +25°C)
2.5
2.0
2.0
1.5
1.5
1.0
1.0
0.5
0
–0.5
–1.0
–1.5
–2.0
0.5
0
–0.5
–1.0
–1.5
2.5
2.0
2.0
1.5
1.5
1.0
1.0
0.5
0
–0.5
–1.0
–1.5
–2.0
0.5
0
–0.5
–1.0
–1.5
0000H 2000H 4000H 6000H 8000H A000H C000H E000H FFFFH
0000H 2000H 4000H 6000H 8000H A000H C000H E000H FFFFH
Digital Input Code
Digital Input Code
FIGURE 8. Integral Linearity and Differential Linearity
Error Curves for Figure 9.
FIGURE 7. Integral Linearity and Differential Linearity
Error Curves for Figure 6.
NC 48
NC 47
NC 46
NC 45
+V
V
OUTA Sense 44
VOUT
43
REFL AB Sense 42
REFL AB 41
REFH AB 40
VREFH AB Sense 39
OUTB Sense 38
OUTB 37
+V
OPA2350
VOUT
A
DAC7644
V
100Ω
100Ω
2200pF
2200pF
+1.25V
V
1000pF
1000pF
V
+V
V
V
+2.5V
VOUT
FIGURE 9. Single-Supply Buffered Reference with VREFL = +1.25V and VREFH = +2.5V (1/2 DAC7644).
NC 48
NC 47
NC 46
NC 45
V
OUTA Sense 44
VOUT
43
REFL AB Sense 42
REFL AB 41
VREFH AB 40
REFH AB Sense 39
OUTB Sense 38
VOUT
37
VOUT
A
DAC7644
+V
V
V
+V
OPA350
100Ω
+2.5V
V
1000pF
2200pF
V
VOUT
B
FIGURE 10. Single-Supply Buffered VREFH (1/2 DAC7644).
®
18
DAC7644
BB [ BURR-BROWN CORPORATION ]
