V
R+
Gain Error
Offset Error
DAC Code
DAC V
OUT
Ideal transfer
function
R
=
Load
¥
AV
CC
C
= 100 pF
Load
2
DAC Output
Positive
Negative
MSP430F5338, MSP430F5336, MSP430F5335, MSP430F5333
SLAS721D – AUGUST 2010 – REVISED DECEMBER 2015
www.ti.com
12-Bit DAC, Linearity Specifications (continued)
over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted) (see
Figure 5-17
)
PARAMETER
TEST CONDITIONS
V
CC
MIN
TYP
MAX
UNIT
ppm
Gain temperature
of
d
E(G)
/d
T
2.2 V, 3 V
10
coefficient
(1)
FSR/
°C
DAC12AMPx = 2
165
Time for offset
t
Offset_Cal
DAC12AMPx = 3, 5
2.2 V, 3 V
66
ms
calibration
(4)
DAC12AMPx = 4, 6, 7
16.5
(4)
The offset calibration can be done if DAC12AMPx = {2, 3, 4, 5, 6, 7}. The output operational amplifier is switched off with DAC12AMPx =
{0, 1}. TI recommends configuring the DAC12 module before initiating calibration. Port activity during calibration may effect accuracy
and is not recommended.
Figure 5-17. Linearity Test Load Conditions and Gain/Offset Definition
42
Specifications
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