參數(shù)資料
型號: TMP431BDGKT
廠商: TEXAS INSTRUMENTS INC
元件分類: 模擬信號調(diào)理
英文描述: SPECIALTY ANALOG CIRCUIT, PDSO8
封裝: GREEN, PLASTIC, MSOP-8
文件頁數(shù): 15/40頁
文件大?。?/td> 790K
代理商: TMP431BDGKT
SBOS441C
– SEPTEMBER 2009 – REVISED FEBRUARY 2011
Beta Compensation Configuration Register
continue to be GND collector-connected in this mode,
but no beta compensation factor is applied. When the
If the Beta Compensation Configuration Register is
beta correction is set to '0111' or the sensor is
set to '1xxx' (beta correction enabled) for a given
diode-connected (base shorted to collector), the
remote channel at the beginning of each temperature
η-factor used by the TMP431/32 is 1.008. When the
conversion, the TMP431/32 automatically detect if the
beta correction configuration is set to '1xxx' (beta
sensor
is
diode-connected
or
GND
correction
enabled)
and
the
sensor
is
GND
collector-connected, select the proper beta range,
collector-connected (PNP collector to ground), the
and measure the sensor temperature appropriately.
η-factor used by the TMP431/32 is 1.000. Table 10
shows the read value for the selected beta ranges
If the Beta Compensation Configuration Register is
and
the
appropriate
η-factor
used
for
each
set to '0111' (beta correction disabled) for a given
conversion.
channel, the automatic detection is bypassed and the
temperature
is
measured
assuming
a
diode-connected sensor. A PNP transistor may
Table 10. Beta Compensation Configuration Register
BCx3-BCx0
BETA RANGE DESCRIPTION
η-FACTOR
TIME
1000
Automatically selected range 0 (0.10
< beta < 0.18)
1.000
126ms
1001
Automatically selected range 1 (0.16
< beta < 0.26)
1.000
126ms
1010
Automatically selected range 2 (0.24
< beta < 0.43)
1.000
126ms
1011
Automatically selected range 3 (0.35
< beta < 0.78)
1.000
126ms
1100
Automatically selected range 4 (0.64
< beta < 1.8)
1.000
126ms
1101
Automatically selected range 5 (1.4
< beta < 9.0)
1.000
126ms
1110
Automatically selected range 6 (6.7
< beta < 40.0)
1.000
126ms
1111
Automatically selected range 7 (beta
> 27.0)
1.000
126ms
1111
Automatically detected diode connected sensor
1.008
93ms
0000
Manually selected range 0 (0.10
< beta < 0.5)
1.000
93ms
0001
Manually selected range 1 (0.13
< beta < 1.0)
1.000
93ms
0010
Manually selected range 2 (0.18
< beta < 2.0)
1.000
93ms
0011
Manually selected range 3 (0.3
< beta < 25)
1.000
93ms
0100
Manually selected range 4 (0.5
< beta < 50)
1.000
93ms
0101
Manually selected range 5 (1.1
< beta < 100)
1.000
93ms
0110
Manually selected range 6 (2.4
< beta < 150)
1.000
93ms
0111
Manually disabled beta correction
1.008
93ms
22
2009–2011, Texas Instruments Incorporated
Product Folder Link(s): TMP431 TMP432
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