NC 48
NC 47
NC 46
+V
NC 45
VOUTA Sense 44
VOUT
VOUT
A
43
DAC7744
VREFL AB Sense 42
VREFL AB 41
1kΩ
100Ω
100Ω
2200pF
2200pF
OPA350
OPA227
1000pF
1000pF
0.05V
VREFH AB 40
99kΩ
VREFH AB Sense 39
VOUTB Sense 38
+V
VOUT
B
37
+5V
VOUT
FIGURE 9. Single-Supply Buffered Reference with a Reference Low of 50mV and Reference High of +5V.
LINEARITY ERROR AND
DIFFERENTIAL LINEARITY ERROR vs CODE
LINEARITY ERROR AND
DIFFERENTIAL LINEARITY ERROR vs CODE
(DAC A, +25°C)
(DAC B, +25°C)
2.0
1.5
2.0
1.5
1.0
1.0
0.5
0
0.5
0
–0.5
–1.0
–1.5
–2.0
–0.5
–1.0
–1.5
–2.0
1.0
0.5
1.0
0.5
0
0
–0.5
–1.0
–0.5
–1.0
0000H 2000H 4000H 6000H 8000H A000H C000H E000H FFFFH
0000H 2000H 4000H 6000H 8000H A000H C000H E000H FFFFH
Digital Input Code
Digital Input Code
LINEARITY ERROR AND
DIFFERENTIAL LINEARITY ERROR vs CODE
(DAC C, +25°C)
LINEARITY ERROR AND
DIFFERENTIAL LINEARITY ERROR vs CODE
(DAC D, +25°C)
2.0
2.0
1.5
1.0
1.5
1.0
0.5
0
0.5
0
–0.5
–1.0
–1.5
–2.0
–0.5
–1.0
–1.5
–2.0
1.0
0.5
1.0
0.5
0
0
–0.5
–1.0
–0.5
–1.0
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 10. Integral Linearity and Differential Linearity Error Curves for Figure 9.
®
20
DAC7744
TI [ TEXAS INSTRUMENTS ]
