參數(shù)資料
型號(hào)： TMP431BDGKT
廠商： TEXAS INSTRUMENTS INC
元件分類： 模擬信號(hào)調(diào)理
英文描述： SPECIALTY ANALOG CIRCUIT, PDSO8
封裝： GREEN, PLASTIC, MSOP-8
文件頁(yè)數(shù)： 16/40頁(yè)
文件大?。?/td> 790K
代理商： TMP431BDGKT
V
=
-
BE2
BE1
ln
hkT
q
()
I
2
1
1.008
300
N
-
ADJUST
heff =
300
1.008
heff
N
ADJUST
=300 -
1.000
300
N
-
ADJUST
heff =
300
1.000
heff
N
ADJUST
=300 -
SBOS441C
– SEPTEMBER 2009 – REVISED FEBRUARY 2011
η-Factor Correction Register
η-correction value may be written to and read from
pointer address 27h. The
η-correction value for the
The TMP431/32 allow for a different
η-factor value to
second remote channel is read to and written from
be
used
for
converting
remote
channel
pointer address 28h. The register power-on reset
measurements to temperature. The remote channel
value is 00h, thus having no effect unless written to.
uses
sequential
current
excitation
to
extract
a
differential VBE voltage measurement to determine
Table 11.
η-Factor Range
the temperature of the remote transistor. Equation 1
NADJUST
relates this voltage and temperature.
BINARY
HEX
DECIMAL
η
01111111
7F
127
1.747977
(1)
00001010
0A
10
1.042759
The value
η in Equation 1 is a characteristic of the
00001000
08
8
1.035616
particular transistor used for the remote channel.
00000110
06
6
1.028571
When the beta compensation configuration is set to
00000100
04
4
1.021622
'0111' (beta compensation disabled) or the sensor is
diode-connected (base shorted to collector), the
00000010
02
2
1.014765
η-factor used by the TMP431/32 is 1.008. When the
00000001
01
1
1.011371
beta compensation configuration is set to '1000' (beta
00000000
00
0
1.008
compensation enabled) and the sensor is GND
11111111
FF
–1
1.004651
collector-connected (PNP collector to ground), the
11111110
FE
–2
1.001325
η-factor used by the TMP431/32 is 1.000. If the
η-factor used for the temperature conversion does not
11111100
FC
–4
0.994737
match
the
characteristic
of
the
sensor,
then
11111010
FA
–6
0.988235
temperature offset is observed. The value in the
11111000
F8
–8
0.981818
η-Factor Correction Register may be used to adjust
11110110
F6
–10
0.975484
the effective
η-factor according to Equation 2 and
10000000
80
–128
0.706542
Equation 3 for disabled beta compensation or a
diode-connected sensor. Equation 4 and Equation 5
space
may be used for enabled beta compensation and a
GND collector-connected sensor.
Software Reset
The TMP431/32 may be reset by writing any value to
(2)
Pointer Register FCh. This action restores the
power-on reset state to all of the TMP431/32
(3)
registers as well as abort any conversion in process
and clear the ALERT and THERM pins.
(4)
The TMP431/32 also support reset via the two-wire
general call address (00000000). The TMP431/32
acknowledge the general call address and respond to
(5)
the second byte. If the second byte is 00000110, the
TMP431/32
execute
a
software
reset.
The
η-correction
value
must
be
stored
in
TMP431/32 do not respond to other values in the
twos-complement format, yielding an effective data
second byte.
range from
–128 to +127. Table 11 shows the
η-factor range for both 1.008 and 1.000. For the
TMP431, the
η-correction value may be written to and
read from pointer address 18h. For the TMP432, the
2009–2011, Texas Instruments Incorporated
23
Product Folder Link(s): TMP431 TMP432
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TMP431CDGKR 功能描述:板上安裝溫度傳感器 +/-1C Remote and Local Temp Sensor RoHS:否 制造商:Omron Electronics 輸出類型:Digital 配置: 準(zhǔn)確性:+/- 1.5 C, +/- 3 C 溫度閾值: 數(shù)字輸出 - 總線接口:2-Wire, I2C, SMBus 電源電壓-最大:5.5 V 電源電壓-最小:4.5 V 最大工作溫度:+ 50 C 最小工作溫度:0 C 關(guān)閉: 安裝風(fēng)格: 封裝 / 箱體: 設(shè)備功能:Temperature and Humidity Sensor
TMP431CDGKT 功能描述:板上安裝溫度傳感器 +/-1C Remote and Local Temp Sensor RoHS:否 制造商:Omron Electronics 輸出類型:Digital 配置: 準(zhǔn)確性:+/- 1.5 C, +/- 3 C 溫度閾值: 數(shù)字輸出 - 總線接口:2-Wire, I2C, SMBus 電源電壓-最大:5.5 V 電源電壓-最小:4.5 V 最大工作溫度:+ 50 C 最小工作溫度:0 C 關(guān)閉: 安裝風(fēng)格: 封裝 / 箱體: 設(shè)備功能:Temperature and Humidity Sensor
TMP431DDGKR 功能描述:板上安裝溫度傳感器 +/-1C Remote and Local Temp Sensor RoHS:否 制造商:Omron Electronics 輸出類型:Digital 配置: 準(zhǔn)確性:+/- 1.5 C, +/- 3 C 溫度閾值: 數(shù)字輸出 - 總線接口:2-Wire, I2C, SMBus 電源電壓-最大:5.5 V 電源電壓-最小:4.5 V 最大工作溫度:+ 50 C 最小工作溫度:0 C 關(guān)閉: 安裝風(fēng)格: 封裝 / 箱體: 設(shè)備功能:Temperature and Humidity Sensor
TMP431DDGKT 功能描述:板上安裝溫度傳感器 +/-1C Remote and Local Temp Sensor RoHS:否 制造商:Omron Electronics 輸出類型:Digital 配置: 準(zhǔn)確性:+/- 1.5 C, +/- 3 C 溫度閾值: 數(shù)字輸出 - 總線接口:2-Wire, I2C, SMBus 電源電壓-最大:5.5 V 電源電壓-最小:4.5 V 最大工作溫度:+ 50 C 最小工作溫度:0 C 關(guān)閉: 安裝風(fēng)格: 封裝 / 箱體: 設(shè)備功能:Temperature and Humidity Sensor
TMP432ADGSR 功能描述:板上安裝溫度傳感器 Remote & Local Temp Sensor RoHS:否 制造商:Omron Electronics 輸出類型:Digital 配置: 準(zhǔn)確性:+/- 1.5 C, +/- 3 C 溫度閾值: 數(shù)字輸出 - 總線接口:2-Wire, I2C, SMBus 電源電壓-最大:5.5 V 電源電壓-最小:4.5 V 最大工作溫度:+ 50 C 最小工作溫度:0 C 關(guān)閉: 安裝風(fēng)格: 封裝 / 箱體: 設(shè)備功能:Temperature and Humidity Sensor
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