參數(shù)資料
型號： MSP430F2274TRHAT
廠商： TEXAS INSTRUMENTS INC
元件分類： 微控制器/微處理器
英文描述： 16-BIT, FLASH, 16 MHz, RISC MICROCONTROLLER, PQCC40
封裝： GREEN, PLASTIC, QFN-40
文件頁數(shù)： 48/94頁
文件大小： 1583K
代理商： MSP430F2274TRHAT
MSP430F22x2
MSP430F22x4
SLAS504E
– JULY 2006 – REVISED MARCH 2011
10-Bit ADC, Linearity Parameters
over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)
PARAMETER
TEST CONDITIONS
VCC
MIN
TYP
MAX
UNIT
EI
Integral linearity error
2.2 V/3 V
±1
LSB
ED
Differential linearity error
2.2 V/3 V
±1
LSB
EO
Offset error
Source impedance RS < 100
2.2 V/3 V
±1
LSB
SREFx = 010, unbuffered external reference,
2.2 V
±1.1
±2
VeREF+ = 1.5 V
SREFx = 010, unbuffered external reference,
3 V
±1.1
±2
VeREF+ = 2.5 V
EG
Gain error
LSB
SREFx = 011, buffered external reference(1),
2.2 V
±1.1
±4
VeREF+ = 1.5 V
SREFx = 011, buffered external reference(1),
3 V
±1.1
±3
VeREF+ = 2.5 V
SREFx = 010, unbuffered external reference,
2.2 V
±2
±5
VeREF+ = 1.5 V
SREFx = 010, unbuffered external reference,
3 V
±2
±5
VeREF+ = 2.5 V
ET
Total unadjusted error
LSB
SREFx = 011, buffered external reference(1),
2.2 V
±2
±7
VeREF+ = 1.5 V
SREFx = 011, buffered external reference(1),
3 V
±2
±6
VeREF+ = 2.5 V
(1)
The reference buffer offset adds to the gain and total unadjusted error.
10-Bit ADC, Temperature Sensor and Built-In VMID
(1)
over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)
PARAMETER
TEST CONDITIONS
VCC
MIN
TYP
MAX
UNIT
2.2 V
40
120
Temperature sensor supply
REFON = 0, INCHx = 0Ah,
ISENSOR
A
current(1)
TA = 25°C
3 V
60
160
TCSENSOR
ADC10ON = 1, INCHx = 0Ah(2)
2.2 V/3 V
3.44
3.55
3.66 mV/
°C
VOffset,Sensor
Sensor offset voltage
ADC10ON = 1, INCHx = 0Ah(2)
-100
100
mV
Temperature sensor voltage at
1265
1365
1465
TA = 105°C (T version only)
Temperature sensor voltage at TA = 85°C
1195
1295
1395
VSENSOR
Sensor output voltage(3)
2.2 V/3 V
mV
Temperature sensor voltage at TA = 25°C
985
1085
1185
Temperature sensor voltage at TA = 0°C
895
995
1095
Sample time required if
ADC10ON = 1, INCHx = 0Ah,
tSENSOR(sample)
2.2 V/3 V
30
s
channel 10 is selected(4)
Error of conversion result
≤ 1 LSB
2.2 V
N/A
Current into divider at
IVMID
ADC10ON = 1, INCHx = 0Bh
A
channel 11(4)
3 V
N/A
2.2 V
1.06
1.1
1.14
ADC10ON = 1, INCHx = 0Bh,
VMID
VCC divider at channel 11
V
VMID ≈ 0.5 × VCC
3 V
1.46
1.5
1.54
2.2 V
1400
Sample time required if
ADC10ON = 1, INCHx = 0Bh,
tVMID(sample)
ns
channel 11 is selected(5)
Error of conversion result
≤ 1 LSB
3 V
1220
(1)
The sensor current ISENSOR is consumed if (ADC10ON = 1 and REFON = 1), or (ADC10ON = 1 and INCH = 0Ah and sample signal is
high).When REFON = 1, ISENSOR is included in IREF+.When REFON = 0, ISENSOR applies during conversion of the temperature sensor
input (INCH = 0Ah).
(2)
The following formula can be used to calculate the temperature sensor output voltage:
VSensor,typ = TCSensor ( 273 + T [°C] ) + VOffset,sensor [mV] or
VSensor,typ = TCSensor T [°C] + VSensor(TA = 0°C) [mV]
(3)
Results based on characterization and/or production test, not TCSensor or VOffset,sensor.
(4)
No additional current is needed. The VMID is used during sampling.
(5)
The on time, tVMID(on), is included in the sampling time, tVMID(sample); no additional on time is needed.
52
Copyright
2006–2011, Texas Instruments Incorporated
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