MSP430FG439 Datasheet, PDF (36/88 Pages) Texas Instruments – Mixed-Signal Microcontrollers

MSP430FG439, MSP430FG438, MSP430FG437
SLAS380D – APRIL 2004 – REVISED NOVEMBER 2014
V _OUT
Conversion 1
Conversion 2
90%
Conversion 3
90%
10%
10%
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tSRLH
tSRHL
Figure 5-26. Slew Rate Testing
5.33 12-Bit DAC, Dynamic Specifications (Continued)
T_A = 25°C unless otherwise noted
PARAMETER
TEST CONDITIONS
3-dB bandwidth,
BW_–3dB V_DC = 1.5 V, V_AC = 0.1 VPP
(see Figure 5-27)
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
Channel-to-channel
crosstalk ⁽¹⁾
(see Figure 5-28)
DAC12_0DAT = 800h, No Load,
DAC12_1DAT = 80h↔F7Fh, R_Load = 3 kΩ
f_{DAC12_1OUT} = 10 kHz with 50/50 duty cycle
DAC12_0DAT = 80h↔F7Fh, R_Load = 3 kΩ,
DAC12_1DAT = 800h, No Load,
f_{DAC12_0OUT} = 10 kHz with 50/50 duty cycle
(1) R_LOAD = 3 kΩ, C_LOAD = 100 pF
V_CC
2.2 V, 3 V
2.2 V, 3 V
Ve_REF+
AC
DC
DAC12_x
ILoad ^{RLoad = 3 k W}
DACx
CLoad = 100pF
AV_CC
2
MIN TYP MAX UNIT
40
180
kHz
550
–80
dB
–80
VREF+
Figure 5-27. Test Conditions for 3-dB Bandwidth Specification
DAC12_0
DAC12_1
ILoad
R _Load
DAC0
CLoad = 100pF
ILoad
R _Load
DAC1
CLoad = 100pF
AVCC
2
AVCC
2
DAC12_xDAT 080h
V _OUT
V _{DAC12_yOUT}
V _{DAC12_xOUT}
7F7h
080h
fToggle
Figure 5-28. Crosstalk Test Conditions
7F7h
080h
36
Specifications
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