MSP430F643 Datasheet, PDF (72/106 Pages) Texas Instruments – MIXED SIGNAL MICROCONTROLLER

MSP430F643x
SLAS720B – AUGUST 2010 – REVISED AUGUST 2012
Conversion 1
V
OUT
Conversion 2
90%
Conversion 3
90%
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10%
10%
t
SRLH
t
SRHL
Figure 20. Slew Rate Testing
12-Bit DAC, Dynamic Specifications (Continued)
over recommended ranges of supply voltage and T_A = 25°C (unless otherwise noted)
PARAMETER
TEST CONDITIONS
V_CC
BW_–3dB
3-dB bandwidth,
V_DC = 1.5 V,
V_AC = 0.1 V_PP
(see Figure 21)
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
2.2 V, 3 V
Channel-to-channel
crosstalk⁽¹⁾ (see
Figure 22)
DAC12_0DAT = 800h, No load,
DAC12_1DAT = 80h ↔ F7Fh, R_Load = 3 kΩ,
f_{DAC12_0OUT} = 10 kHz at 50/50 duty cycle
DAC12_0DAT = 80h ↔ F7Fh, R_Load = 3 kΩ,
DAC12_1DAT = 800h, No load,
f_{DAC12_0OUT} = 10 kHz at 50/50 duty cycle
2.2 V, 3 V
(1) R_Load = 3 kΩ, C_Load = 100 pF
Ve_REF+
AC
DC
DAC12_x
R_Load = 3 kW
I_Load
DACx
C_Load = 100 pF
AV_CC
2
MIN TYP MAX UNIT
40
180
kHz
550
–80
dB
–80
V_REF+
Figure 21. Test Conditions for 3-dB Bandwidth Specification
DAC12_0
DAC12_1
I_Load
R_Load
DAC0
C_Load = 100 pF
AV_CC
2
I_Load
R_Load
DAC1
C_Load = 100 pF
AV_CC
2
DAC12_xDAT 080h
V_OUT
V_{DAC12_yOUT}
V_{DAC12_xOUT}
7F7h
080h
f_Toggle
Figure 22. Crosstalk Test Conditions
7F7h 080h
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