Datasheet

MSP430F47x
MIXED SIGNAL MICROCONTROLLER
SLAS629A -- MARCH 2009 -- REVISED APRIL 2009
49
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
2.2 V/3 V 0 0.005
V
Output voltage
range
No Load, V
REF, DAC12
=AV
CC
,
DAC12_xDAT = 0FFFh, DAC12IR = 1,
DAC12AMPx = 7
2.2 V/3 V AV
CC
--0.05 AV
CC
V
V
O
r
a
n
g
e
(see Note 1,
Figure 23)
R
Load
=3kΩ,V
REF, DAC12
=AV
CC
,
DAC12_xDAT = 0h, DAC12IR = 1,
DAC12AMPx = 7
2.2 V/3 V 0 0.1
V
R
Load
=3kΩ,V
REF, DAC12
=AV
CC
,
DAC12_xDAT = 0FFFh, DAC12IR = 1,
DAC12AMPx = 7
2.2 V/3 V AV
CC
--0.13 AV
CC
C
L(DAC12)
Max DAC12 load
capacitance
2.2 V/3 V 100 pF
I
Max DAC12 load
2.2 V -- 0 . 5 +0.5
m
A
I
L(DAC12)
M
a
x
D
A
C
1
2
l
o
a
d
current
3V -- 1 . 0 +1.0
m
A
R
Load
=3kΩ,V
O/P(DAC12)
< 0.3 V,
DAC12AMPx = 2, DAC12_xDAT = 0h
2.2 V/3 V 150 250
R
O/P(DAC12)
Output resistance
(see Figure 23)
R
Load
=3kΩ,
V
O/P(DAC12)
> AV
CC
-- 0 . 3 V ,
DAC12_xDAT = 0FFFh
2.2 V/3 V 150 250
Ω
R
Load
=3kΩ,
0.3 V ≤ V
O/P(DAC12)
≤ AV
CC
-- 0 . 3 V
2.2 V/3 V 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 23. DAC12_x Output Resistance Tests