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参数资料
型号： MSP430FG437IPNR
厂商： TEXAS INSTRUMENTS INC
元件分类： 微控制器/微处理器
英文描述： 16-BIT, FLASH, 8 MHz, RISC MICROCONTROLLER, PQFP80
封装： GREEN, PLASTIC, QFP-80
文件页数： 37/73页
文件大小： 1121K
代理商： MSP430FG437IPNR
MSP430FG43x
MIXED SIGNAL MICROCONTROLLER
SLAS380C APRIL 2004 REVISED MARCH 2011
42
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
POST OFFICE BOX 1443
HOUSTON, TEXAS 772511443
electrical characteristics over recommended operating free-air temperature (unless otherwise
noted)
12-bit DAC, reference input specifications
PARAMETER
TEST CONDITIONS
VCC
MIN
TYP
MAX
UNIT
Ve
Reference input
DAC12IR=0, (see Notes 1 and 2)
2.2V/3V
AVCC/3 AVCC+0.2
V
VeREF+
Reference input
voltage range
DAC12IR=1, (see Notes 3 and 4)
2.2V/3V
AVcc
AVcc+0.2
V
DAC12_0 IR=DAC12_1 IR =0
2.2V/3V
20
M
Ω
DAC12_0 IR=1, DAC12_1 IR = 0
2.2V/3V
40
48
56
k
Ω
Ri(VREF+),
Reference input
DAC12_0 IR=0, DAC12_1 IR = 1
2.2V/3V
40
48
56
k
Ω
(VREF+),
Ri(VeREF+)
p
resistance
DAC12_0 IR=DAC12_1 IR =1
DAC12_0 SREFx = DAC12_1 SREFx
(see Note 5)
2.2V/3V
20
24
28
k
Ω
NOTES:
1. For a full-scale output, the reference input voltage can be as high as 1/3 of the maximum output voltage swing (AVCC).
2. The maximum voltage applied at reference input voltage terminal VeREF+ = [AVCC VE(O)] / [3*(1 + EG)].
3. For a full-scale output, the reference input voltage can be as high as the maximum output voltage swing (AVCC).
4. The maximum voltage applied at reference input voltage terminal VeREF+ = [AVCC VE(O)] / (1 + EG).
5. When DAC12IR = 1 and DAC12SREFx = 0 or 1 for both channels, the reference input resistive dividers for each DAC are in parallel
reducing the reference input resistance.
12-bit DAC, dynamic specifications; Vref = VCC, DAC12IR = 1 (see Figure 25 and Figure 26)
PARAMETER
TEST CONDITIONS
VCC
MIN
TYP
MAX
UNIT
DAC12 on
DAC12_xDAT = 800h,
DAC12AMPx=0
→ {2, 3, 4}
2.2V/3V
60
120
tON
DAC12 on-
time
DAC12_xDAT = 800h,
ErrorV(O) < ±0.5 LSB
DAC12AMPx=0
→ {5, 6}
2.2V/3V
15
30
μs
tON
time
ErrorV(O) < ±0.5 LSB
(see Note 1,Figure 25)
DAC12AMPx=0
→ 7
2.2V/3V
6
12
μs
Settling
DAC12 xDAT
DAC12AMPx=2
2.2V/3V
100
200
tS(FS)
Settling
time full-scale
DAC12_xDAT =
80h
→ F7Fh→ 80h
DAC12AMPx=3,5
2.2V/3V
40
80
μs
tS(FS)
time,full-scale
80h
→ F7Fh→ 80h
DAC12AMPx=4,6,7
2.2V/3V
15
30
μs
Settling time
DAC12_xDAT =
DAC12AMPx=2
2.2V/3V
5
tS(C-C)
Settling time,
code to code
DAC12_xDAT =
3F8h
→ 408h→ 3F8h
DAC12AMPx=3,5
2.2V/3V
2
μs
tS(C-C)
code to code
3F8h
→ 408h→ 3F8h
BF8h
→ C08h→ BF8h
DAC12AMPx=4,6,7
2.2V/3V
1
μs
DAC12 xDAT
DAC12AMPx=2
2.2V/3V
0.05
0.12
SR
Slew Rate
DAC12_xDAT =
80h
→ F7Fh→ 80h
DAC12AMPx=3,5
2.2V/3V
0.35
0.7
V/
μs
SR
Slew Rate
80h
→ F7Fh→ 80h
DAC12AMPx=4,6,7
2.2V/3V
1.5
2.7
V/
μs
DAC12 xDAT
DAC12AMPx=2
2.2V/3V
10
Glitch energy: full-scale
DAC12_xDAT =
80h
→ F7Fh→ 80h
DAC12AMPx=3,5
2.2V/3V
10
nV-s
Glitch energy: full scale
80h
→ F7Fh→ 80h
DAC12AMPx=4,6,7
2.2V/3V
10
nV s
NOTES:
1. RLoad and CLoad connected to AVSS (not AVCC/2) in Figure 25.
2. Slew rate applies to output voltage steps >= 200mV.
RLoad
AVCC
CLoad = 100pF
2
DAC Output
RO/P(DAC12.x)
ILoad
Conversion 1
Conversion 2
VOUT
Conversion 3
Glitch
Energy
+/ 1/2 LSB
tsettleLH
tsettleHL
= 3 k
Ω
Figure 25. Settling Time and Glitch Energy Testing
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