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LM57-Q1 Datasheet(PDF) 13 Page - Texas Instruments

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Part # LM57-Q1
Description  Resistor-Programmable Temperature Switch and Analog Temperature Sensor
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

LM57-Q1 Datasheet(HTML) 13 Page - Texas Instruments

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0
500
1,000
1,500
2,000
2,500
3,000
3,500
-50
-25
0
25
50
75
100
125
150
175
TEMPERTURE (
SC)
J2 (-5.166mV/°C)
J3 (-7.752mV/°C)
J4 (-10.339mV/°C)
J5 (-12.924mV/°C)
C101
LM57-Q1
www.ti.com
SNIS191A – JULY 2015 – REVISED JULY 2015
7.3 Feature Description
7.3.1
LM57-Q1 VTEMP Temperature-to-Voltage Transfer Function
The value of the RSENSE resistors select a trip point and a corresponding VTEMP gain (J2, J3, J4, or J5).The trip
point range associated with a given gain is shown in bold green or bold red italics in Table 1. Temperatures
above 150°C apply to the LM57FSPWQ1 and LM57TSPWQ1 only and are highlighted in red and italics in
Table 1. The VTEMP gain is selected by the RSENSE resistors. VTEMP is valid over the entire temperature range.
The VTEMP gain is selected by the RSENSE resistors. VTEMP is valid over the entire temperature range.
Figure 12. Temperature Transfer Characteristics
Table 1. LM57-Q1 VTEMP Temperature to Voltage
(1)
VTEMP VOLTAGE (mV)
Temperature (°C)
J2 (-5.166 mV/°C)
J3 (–7.752 mV/°C)
J4 (–10.339 mV/°C)
J5 (–12.924 mV/°C)
–50
1352.56
2028.80
2705.20
3381.40
–49
1347.60
2021.35
2695.26
3368.98
–48
1342.64
2013.90
2685.32
3356.55
–47
1337.67
2006.44
2675.38
3344.12
–46
1332.70
1998.98
2665.43
3331.68
–45
1327.73
1991.52
2655.47
3319.23
–44
1322.76
1984.05
2645.51
3306.78
–43
1317.78
1976.58
2635.54
3294.32
–42
1312.81
1969.11
2625.57
3281.85
–41
1307.82
1961.63
2615.60
3269.38
–40
1302.84
1954.15
2605.62
3256.90
–39
1297.86
1946.66
2595.63
3244.41
–38
1292.87
1939.17
2585.64
3231.92
–37
1287.88
1931.68
2575.64
3219.42
–36
1282.88
1924.18
2565.64
3206.92
–35
1277.89
1916.68
2555.63
3194.41
–34
1272.89
1909.17
2545.62
3181.89
(1)
The RSENSE resistors select a trip point and a corresponding VTEMP gain (J2, J3, J4, or J5). The trip point range associated with a given
gain is shown in bold green or red on this table. Temperatures above 150°C apply to the LM57FSPWQ1 and LM57TSPWQ1 only and
are italicized and highlighted in red. The VTEMP gain is selected by the RSENSE resistors. VTEMP is valid over the entire temperature
range.
Copyright © 2015, Texas Instruments Incorporated
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