Datasheet

MSP430F47x
MIXED SIGNAL MICROCONTROLLER
SLAS629A -- MARCH 2009 -- REVISED APRIL 2009
46
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
electrical characteristics over recommended operating free-air temperature (unless otherwise
noted) (continued)
12-bit DAC, supply specifications
PARAMETER TEST CONDITIONS V
CC
MIN TYP MAX UNIT
AV
CC
Analog supply voltage AV
CC =
DV
CC
,AV
SS
=DV
SS
=0V 2.20 3.60 V
DAC12AMPx = 2, DAC12IR = 0,
DAC12_xDAT = 0800h
2.2 V/3 V 50 110
I
Supply current
DAC12AMPx = 2, DAC12IR = 1,
DAC12_xDAT = 0800h, V
REF, DAC12 =
AV
CC
2.2 V/3 V 50 110
A
I
DD
S
u
p
p
l
y
c
u
r
r
e
n
t
(see Notes 1 and 2)
DAC12AMPx = 5, DAC12IR = 1,
DAC12_xDAT = 0800h, V
REF, DAC12 =
AV
CC
2.2 V/3 V 200 440
µ
A
DAC12AMPx = 7, DAC12IR = 1,
DAC12_xDAT = 0800h, V
REF, DAC12 =
AV
CC
2.2 V/3 V 700 1500
PSRR
Power-supply rejection ratio
(see Notes 3 and 4)
DAC12_xDAT = 800h, V
REF, DAC12
=1.2V,
∆AV
CC
= 100 mV
2.7 V 70 dB
NOTES: 1. No load at the output pin assuming that the control bits for the shared pins are set properly.
2. Current into reference terminals not included. If DAC12IR = 1 current flows through the input divider; see Reference Input
specifications.
3. PSRR = 20*log{∆AV
CC
/∆V
DAC12_xOUT
}.
4. V
REF
is applied externally. The internal reference is not used.