參數(shù)資料
型號： MSP430F5437IPNR
廠商： TEXAS INSTRUMENTS INC
元件分類： 微控制器/微處理器
英文描述： 16-BIT, FLASH, 25 MHz, RISC MICROCONTROLLER, PQFP80
封裝： GREEN, PLASTIC, LQFP-80
文件頁數(shù)： 59/99頁
文件大小： 985K
代理商： MSP430F5437IPNR
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AmbientTemperature- C
MSP430F543x, MSP430F541x
SLAS612C – AUGUST 2009 – REVISED MARCH 2010
www.ti.com
12-Bit ADC, Temperature Sensor and Built-In VMID
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
150
Operating supply current into
REFON = 0, INCH = 0Ah,
ISENSOR
A
AVCC terminal
(1)
ADC12ON = N A, TA = 25°C
3 V
150
2.2 V
894
ADC12ON = 1, INCH = 0Ah,
VSENSOR
See (2)
mV
TA = 0°C
3 V
894
2.2 V
3.66
TCSENSOR
ADC12ON = 1, INCH = 0Ah
mV/°C
3 V
3.66
2.2 V
30
Sample time required if
ADC12ON = 1, INCH = 0Ah,
tSENSOR(sample)
s
channel 10 is selected(3)
Error of conversion result
≤ 1 LSB
3 V
30
2.2 V
1.1
ADC12ON = 1, INCH = 0Bh,
VMID
AVCC divider at channel 11
V
VMID is ~0.5 × VAVCC
3 V
1.5
Sample time required if
ADC12ON = 1, INCH = 0Bh,
tVMID(sample)
2.2 V/3 V
1000
ns
channel 11 is selected(4)
Error of conversion result
≤ 1 LSB
(1)
The sensor current ISENSOR is consumed if (ADC12ON = 1 and REFON = 1) or (ADC12ON = 1 and INCH = 0Ah and sample signal is
high). When REFON = 1, ISENSOR is already included in IREF+.
(2)
The temperature sensor offset can be as much as ±20°C. A single-point calibration is recommended in order to minimize the offset error
of the built-in temperature sensor.
(3)
The typical equivalent impedance of the sensor is 51 k
. The sample time required includes the sensor-on time tSENSOR(on).
(4)
The on-time tVMID(on) is included in the sampling time tVMID(sample); no additional on time is needed.
Figure 16. Typical Temperature Sensor Voltage
62
Copyright 2009–2010, Texas Instruments Incorporated
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