LINEARITY ERROR AND
DIFFERENTIAL LINEARITY ERROR vs CODE
(DAC A, +25°C)
LINEARITY ERROR AND
DIFFERENTIAL LINEARITY ERROR vs CODE
(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 7. Integral Linearity and Differential Linearity Error Curves for Figure 8.
NC 48
NC 47
NC 46
NC 45
+V
V
OUTA Sense 44
OUTA 43
VREFL AB Sense 42
REFL AB 41
REFH AB 40
VREFH AB Sense 39
OUTB Sense 38
OUTB 37
OPA2234
VOUT
V
DAC7744
100Ω
100Ω
2200pF
2200pF
–5V
–V
V
1000pF
1000pF
V
V
+V
+5V
V
VOUT
–V
FIGURE 8. Dual-Supply Buffered Referenced with VREFL = –5V and VREFH = +5V (1/2 DAC7744).
19
®
DAC7744
TI [ TEXAS INSTRUMENTS ]
