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TMP37GSZ

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P19
Low Voltage Temperature Sensors
Data Sheet
TMP35/TMP36/TMP37
FEATURES
Low voltage operation (2.7 V to 5.5 V)
Calibrated directly in °C
10 mV/°C scale factor (20 mV/°C on TMP37)
±2°C accuracy over temperature (typ)
±0.5°C linearity (typ)
Stable with large capacitive loads
Specified −40°C to +125°C, operation to +150°C
Less than 50 µA quiescent current
Shutdown current 0.5 µA max
Low self-heating
Qualified for automotive applications
APPLICATIONS
Environmental control systems
Thermal protection
Industrial process control
Fire alarms
Power system monitors
CPU thermal management
GENERAL DESCRIPTION
The TMP35/TMP36/TMP37 are low voltage, precision centi-
grade temperature sensors. They provide a voltage output that
is linearly proportional to the Celsius (centigrade) temperature.
The TMP35/TMP36/TMP37 do not require any external
calibration to provide typical accuracies of ±1°C at +25°C
and ±2°C over the −40°C to +125°C temperature range.
The low output impedance of the TMP35/TMP36/TMP37 and
its linear output and precise calibration simplify interfacing to
temperature control circuitry and ADCs. All three devices are
intended for single-supply operation from 2.7 V to 5.5 V maxi-
mum. The supply current runs well below 50 µA, providing
very low self-heating—less than 0.1°C in still air. In addition, a
shutdown function is provided to cut the supply current to less
than 0.5 µA.
FUNCTIONAL BLOCK DIAGRAM
+V
S
(2.7V TO 5.5V)
V
OUT
SHUTDOWN
TMP35/
TMP36/
TMP37
00337-001
Figure 1.
PIN CONFIGURATIONS
1
2
3
5
4
TOP VIEW
(Not to Scale)
NC = NO CONNECT
V
OUT
SHUT
DOWN
GND
NC
+V
S
00337-002
Figure 2. RJ-5 (SOT-23)
1
2
3
4
8
7
6
5
TOP VIEW
(Not to Scale)
NC = NO CONNECT
V
OUT
SHUTDOWN
NC
NC
+V
S
NC
NC
GND
00337-003
Figure 3. R-8 (SOIC_N)
1 3
2
BOTTOM VIEW
(Not to Scale)
PIN 1, +V
S
; PIN 2, V
OUT
; PIN 3, GND
00337-004
Figure 4. T-3 (TO-92)
The TMP35 is functionally compatible with the LM35/LM45
and provides a 250 mV output at 25°C. The TMP35 reads
temperatures from 10°C to 125°C. The TMP36 is specified from
−40°C to +125°C, provides a 750 mV output at 25°C, and
operates to 125°C from a single 2.7 V supply. The TMP36 is
functionally compatible with the LM50. Both the TMP35 and
TMP36 have an output scale factor of 10 mV/°C.
The TMP37 is intended for applications over the range of 5°C
to 100°C and provides an output scale factor of 20 mV/°C. The
TMP37 provides a 500 mV output at 25°C. Operation extends
to 150°C with reduced accuracy for all devices when operating
from a 5 V supply.
The TMP35/TMP36/TMP37 are available in low cost 3-lead
TO-92, 8-lead SOIC_N, and 5-lead SOT-23 surface-mount
packages.
Rev. H
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rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registered trademarks are the property of their respective owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700 ©1996–2015 Analog Devices, Inc. All rights reserved.
Technical Support www.analog.com
TMP35/TMP36/TMP37 Data Sheet
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications ....................................................................................... 1
General Description ......................................................................... 1
Functional Block Diagram .............................................................. 1
Pin Configurations ........................................................................... 1
Revision History ............................................................................... 2
Specifications ..................................................................................... 3
Absolute Maximum Ratings ............................................................ 4
Thermal Resistance ...................................................................... 4
ESD Caution .................................................................................. 4
Typical Performance Characteristics ............................................. 5
Functional Description .................................................................... 8
Applications Information ................................................................ 9
Shutdown Operation .................................................................... 9
Mounting Considerations ........................................................... 9
Thermal Environment Effects .................................................... 9
Basic Temperature Sensor Connections .................................. 10
Fahrenheit Thermometers ........................................................ 10
Average and Differential Temperature Measurement ........... 12
Microprocessor Interrupt Generator ....................................... 13
Thermocouple Signal Conditioning with Cold-Junction
Compensation ............................................................................. 14
Using TMP35/TMP36/TMP37 Sensors in Remote
Locations ..................................................................................... 15
Temperature to 4–20 mA Loop Transmitter .......................... 15
Temperature-to-Frequency Converter .................................... 16
Driving Long Cables or Heavy Capacitive Loads .................. 17
Commentary on Long-Term Stability ..................................... 17
Outline Dimensions ....................................................................... 18
Ordering Guide .......................................................................... 19
Automotive Products ................................................................. 19
REVISION HISTORY
5/15—Rev. G to Rev. H
Changed TMP3x to TMP35/TMP36/TMP37 ............ Throughout
Changes to Figure 28 ...................................................................... 12
Changes to Ordering Guide .......................................................... 19
11/13—Rev. F to Rev. G
Change to Table 1, Long-Term Stability Parameter ..................... 3
Change to Caption for Figure 38 .................................................. 18
Changes to Ordering Guide .......................................................... 19
11/10—Rev. E to Rev. F
Changes to Features .......................................................................... 1
Updated Outline Dimensions ....................................................... 18
Changes to Ordering Guide .......................................................... 19
Added Automotive Products Section........................................... 20
8/08—Rev. D to Rev. E
Updated Outline Dimensions ....................................................... 18
Changes to Ordering Guide .......................................................... 19
3/05—Rev. C to Rev. D
Updated Format .................................................................. Universal
Changes to Specifications ................................................................ 3
Additions to Absolute Maximum Ratings ..................................... 4
Updated Outline Dimensions ....................................................... 18
Changes to Ordering Guide .......................................................... 19
10/02—Rev. B to Rev. C
Changes to Specifications ................................................................. 3
Deleted Text from Commentary on Long-Te rm Stability
Section .............................................................................................. 13
Updated Outline Dimensions ....................................................... 14
9/01—Rev. A to Rev. B
Edits to Specifications ....................................................................... 2
Addition of New Figure 1 ................................................................. 2
Deletion of Wafer Test Limits Section ............................................ 3
6/97—Rev. 0 to Rev. A
3/96—Revision 0: Initial Version
Rev. H | Page 2 of 19
Data Sheet TMP35/TMP36/TMP37
SPECIFICATIONS
V
S
= 2.7 V to 5.5 V, −40°C ≤ T
A
≤ +125°C, unless otherwise noted.
Table 1.
Parameter
1
Symbol
Min
Typ
Max
Unit
ACCURACY
TMP35/TMP36/TMP37 (F Grade) T
A
= 25°C ±1 ±2 °C
TMP35/TMP36/TMP37 (G Grade) T
A
= 25°C ±1 ±3 °C
TMP35/TMP36/TMP37 (F Grade) Over rated temperature ±2 ±3 °C
TMP35/TMP36/TMP37 (G Grade) Over rated temperature ±2 ±4 °C
Scale Factor, TMP35 10°C ≤ T
A
≤ 125°C 10 mV/°C
Scale Factor, TMP36
A
10
mV/°C
Scale Factor, TMP37 5°C ≤ T
A
≤ 85°C 20 mV/°C
5°C ≤ T
A
≤ 100°C 20 mV/°C
3.0 V ≤ V
S
≤ 5.5 V
Load Regulation 0 µA ≤ I
L
≤ 50 µA
−40°C ≤ T
A
≤ +105°C 6 20 m°C/µA
−105°C ≤ T
A
≤ +125°C 25 60 m°C/µA
Power Supply Rejection Ratio PSRR T
A
= 25°C 30 100 m°C/V
3.0 V ≤ V
S
≤ 5.5 V 50 m°C/V
Linearity 0.5 °C
Long-Term Stability T
A
= 150°C for 1000 hours 0.4 °C
SHUTDOWN
Logic High Input Voltage V
IH
V
S
= 2.7 V 1.8 V
Logic Low Input Voltage V
IL
V
S
= 5.5 V 400 mV
OUTPUT
TMP35 Output Voltage T
A
= 25°C 250 mV
TMP36 Output Voltage T
A
= 25°C 750 mV
TMP37 Output Voltage T
A
= 25°C 500 mV
Output Voltage Range
100
2000
mV
Output Load Current I
L
0 50 µA
Short-Circuit Current I
SC
Note 2 250 µA
Capacitive Load Driving C
L
No oscillations
2
1000 10000 pF
Device Turn-On Time
Output within ±1°C, 100 kΩ||100 pF load
2
0.5 1 ms
POWER SUPPLY
Supply Range V
S
2.7 5.5 V
Supply Current I
SY
(ON) Unloaded 50 µA
Supply Current (Shutdown) I
SY
(OFF) Unloaded 0.01 0.5 µA
1
Does not consider errors caused by self-heating.
2
Guaranteed but not tested.
Rev. H | Page 3 of 19
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P19

TMP37GSZ

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