MSP430F241X_11 Datasheet, PDF (74/107 Pages) Texas Instruments – MIXED SIGNAL MICROCONTROLLER

MSP430F241x, MSP430F261x
MIXED SIGNAL MICROCONTROLLER
SLAS541G -- JUNE 2007 -- REVISED MARCH 2011
electrical characteristics over recommended ranges of supply voltage and operating free-air
temperature (unless otherwise noted) (continued)
VOUT
Conversion 1
Conversion 2 Conversion 3
90%
90%
10%
10%
tSRLH
tSRHL
Figure 46. Slew Rate Testing
12-bit DAC, dynamic specifications (continued) (T_A = 25C, unless otherwise noted)
BW_--3dB
PARAMETER
3-dB bandwidth,
V_DC = 1.5 V, V_AC = 0.1 V_PP
(see Figure 47)
TEST CONDITIONS
DAC12AMPx = {2, 3, 4}, DAC12SREFx = 2,
DAC12IR = 1, DAC12_xDAT = 800h
DAC12AMPx = {5, 6}, DAC12SREFx = 2,
DAC12IR = 1, DAC12_xDAT = 800h
DAC12AMPx = 7, DAC12SREFx = 2,
DAC12IR = 1, DAC12_xDAT = 800h
V_CC
MIN
40
2.2 V/3 V 180
550
Channel-to-channel crosstalk
(see Note 1 and Figure 48)
NOTE 1: R_LOAD = 3 k, C_LOAD = 100 pF
DAC12_0DAT = 800h, No load,
DAC12_1DAT = 80h<-->F7Fh, R_Load = 3 k,
f_{DAC12_1OUT} = 10 kHz, Duty cycle = 50%
DAC12_0DAT = 80h<-->F7Fh, R_Load = 3 k,
DAC12_1DAT = 800h, No load,
f_{DAC12_0OUT} = 10 kHz, Duty cycle = 50%
2.2 V/3 V
VeREF+
AC
DC
DAC12_x
ILoad ^{RLoad = 3 k}
DACx
AV _CC
2
CLoad= 100pF
TYP MAX UNIT
kHz
--80
dB
--80
VREF+
e
Figure 47. Test Conditions for 3-dB Bandwidth Specification
DAC12_0
DAC12_1
ILoad
RLoad
DAC0
CLoad= 100pF
ILoad
RLoad
DAC1
CLoad= 100pF
AV _CC
2
AV _CC
2
DAC12_xDAT 080h
V _OUT
V _{DAC12_yOUT}
V _{DAC12_xOUT}
Figure 48. Crosstalk Test Conditions
7F7h
080h
fToggle
7F7h
080h
74
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