Datasheet

MSP430F42x0
MIXED SIGNAL MICROCONTROLLER
SLAS455D − MARCH 2005 − REVISED APRIL 2007
35
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
electrical characteristics over recommended operating free-air temperature (unless otherwise
noted) (continued)
12-bit DAC, output specifications
PARAMETER TEST CONDITIONS V
CC
MIN TYP MAX UNIT
No Load, V
REF,DAC12
= AV
CC
,
DAC12_xDAT = 0h, DAC12IR = 1,
DAC12AMPx = 7
2.2V/3V 0 0.005
V
Output voltage
range
No Load, V
REF,DAC12
= AV
CC
,
DAC12_xDAT = 0FFFh, DAC12IR = 1,
DAC12AMPx = 7
2.2V/3V AV
CC
−0.05 AV
CC
V
V
O
range
(see Note 1,
Figure 15)
R
Load
= 3 kΩ, V
REF,DAC12
= AV
CC
,
DAC12_xDAT = 0h, DAC12IR = 1,
DAC12AMPx = 7
2.2V/3V 0 0.1
V
R
Load
= 3 kΩ, V
REF,DAC12
= AV
CC
,
DAC12_xDAT = 0FFFh, DAC12IR = 1,
DAC12AMPx = 7
2.2V/3V AV
CC
−0.13 AV
CC
C
L(DAC12)
Max DAC12
load capacitance
2.2V/3V 100 pF
I
Max DAC12
2.2V −0.5 +0.5
mA
I
L(DAC12)
Max
DAC12
load current
3V −1.0 +1.0
mA
R
Load
= 3 kΩ, V
O/P(DAC12)
< 0.3 V,
DAC12AMPx = 2, DAC12_xDAT = 0h
2.2V/3V 150 250
R
O/P(DAC12)
Output
Resistance
(see Figure 15)
R
Load
= 3 kΩ,
V
O/P(DAC12)
> AV
CC
−0.3 V
DAC12_xDAT = 0FFFh
2.2V/3V 150 250
Ω
(see
Figure
15)
R
Load
= 3 kΩ,
0.3V ≤ V
O/P(DAC12)
≤ AV
CC
− 0.3V
2.2V/3V 1 4
NOTES: 1. Data is valid after the offset calibration of the output amplifier.
R
O/P(DAC12_x)
Max
0.3
AV
CC
AV
CC
−0.3V
V
OUT
Min
R
Load
AV
CC
C
Load
= 100pF
2
I
Load
DAC12
O/P(DAC12_x)
Figure 15. DAC12_x Output Resistance Tests