TMP37GT9Z Analog Devices Inc, TMP37GT9Z Datasheet

3V TEMPERATURE SENSOR

TMP37GT9Z

Manufacturer Part Number
TMP37GT9Z
Description
3V TEMPERATURE SENSOR
Manufacturer
Analog Devices Inc
Datasheet

Specifications of TMP37GT9Z

Sensing Temperature
5°C ~ 100°C
Output Type
Voltage
Voltage - Supply
2.7 V ~ 5.5 V
Accuracy
±1°C
Package / Case
TO-226-3, TO-92-3 (TO-226AA)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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.
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.
Rev. F
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
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.
Low Voltage Temperature Sensors
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
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.
FUNCTIONAL BLOCK DIAGRAM
SHUTDOWN
V
V
GND
OUT
+V
OUT
NC
NC
NC
TMP35/TMP36/TMP37
PIN 1, +V
PIN CONFIGURATIONS
©1996–2010 Analog Devices, Inc. All rights reserved.
S
1
2
3
NC = NO CONNECT
1
2
3
4
NC = NO CONNECT
Figure 2. RJ-5 (SOT-23)
(Not to Scale)
(Not to Scale)
Figure 3. R-8 (SOIC_N)
Figure 4. T-3 (TO-92)
TOP VIEW
TOP VIEW
S
BOTTOM VIEW
; PIN 2, V
(Not to Scale)
1
+V
Figure 1.
S
2
(2.7V TO 5.5V)
TMP35/
TMP36/
TMP37
OUT
3
5
4
8
7
6
5
; PIN 3, GND
SHUTDOWN
NC
NC
SHUTDOWN
GND
+V
S
V
OUT
www.analog.com

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TMP37GT9Z Summary of contents

Page 1

FEATURES Low voltage operation (2 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 ...

Page 2

TMP35/TMP36/TMP37 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 ...

Page 3

SPECIFICATIONS 5.5 V, −40°C ≤ T ≤ +125°C, unless otherwise noted Table 1. Parameter 1 Symbol ACCURACY TMP35/TMP36/TMP37 (F Grade) TMP35/TMP36/TMP37 (G Grade) TMP35/TMP36/TMP37 (F Grade) TMP35/TMP36/TMP37 (G Grade) Scale Factor, TMP35 Scale ...

Page 4

TMP35/TMP36/TMP37 ABSOLUTE MAXIMUM RATINGS Table Parameter Supply Voltage Shutdown Pin Output Pin Operating Temperature Range Die Junction Temperature Storage Temperature Range IR Reflow Soldering Peak Temperature Time at Peak Temperature Range Ramp-Up Rate Ramp-Down Rate Time 25°C ...

Page 5

TYPICAL PERFORMANCE CHARACTERISTICS – TEMPERATURE (°C) Figure 5. Load Regulation vs. Temperature (m°C/μA) 2.0 a. TMP35 b. TMP36 1.8 c. TMP37 + 1.6 1.4 1.2 1.0 0.8 0.6 0.4 ...

Page 6

TMP35/TMP36/TMP37 LOAD –50 – TEMPERATURE (°C) Figure 11. Supply Current vs. Temperature ° LOAD T ...

Page 7

TMP35 SOIC SOLDERED TO 0.5" × 0.3" Cu PCB b. TMP36 SOIC SOLDERED TO 0.6" × 0.4" Cu PCB 30 c. TMP35 TO-92 ...

Page 8

TMP35/TMP36/TMP37 FUNCTIONAL DESCRIPTION An equivalent circuit for the TMP3x family of micropower, centigrade temperature sensors is shown in Figure 22. The core of the temperature sensor is a band gap core that comprises transistors Q1 and Q2, biased by Q3 ...

Page 9

APPLICATIONS INFORMATION SHUTDOWN OPERATION All TMP3x devices include a shutdown capability, which reduces the power supply drain to less than 0.5 μA maximum. This feature, available only in the SOIC_N and the SOT-23 packages, is TTL/CMOS level-compatible, provided that the ...

Page 10

TMP35/TMP36/TMP37 BASIC TEMPERATURE SENSOR CONNECTIONS Figure 24 illustrates the basic circuit configuration for the TMP3x family of temperature sensors. The table in Figure 24 shows the pin assignments of the temperature sensors for the three package types. For the SOT-23, ...

Page 11

The same circuit principles can be applied to the TMP36, but because of the inherent offset of the TMP36, the circuit uses only two resistors, as shown in Figure 26. In this circuit, the output voltage transfer characteristic is 1 ...

Page 12

TMP35/TMP36/TMP37 AVERAGE AND DIFFERENTIAL TEMPERATURE MEASUREMENT In many commercial and industrial environments, temperature sensors often measure the average temperature in a building, or the difference in temperature between two locations on a factory floor industrial process. The ...

Page 13

MICROPROCESSOR INTERRUPT GENERATOR These inexpensive temperature sensors can be used with a voltage reference and an analog comparator to configure an interrupt generator for microprocessor applications. With the popularity of fast microprocessors, the need to indicate a microprocessor overtemperature condition ...

Page 14

TMP35/TMP36/TMP37 THERMOCOUPLE SIGNAL CONDITIONING WITH COLD-JUNCTION COMPENSATION The circuit in Figure 31 conditions the output of a Type K thermocouple, while providing cold-junction compensation for temperatures between 0°C and 250°C. The circuit operates from a single 3 5.5 ...

Page 15

USING TMP3x SENSORS IN REMOTE LOCATIONS In many industrial environments, sensors are required to operate in the presence of high ambient noise. These noise sources take many forms, for example, SCR transients, relays, radio transmitters, arc welders, and ac motors. ...

Page 16

TMP35/TMP36/TMP37 + TMP3x V OUT GND NOTE: 1 SEE TEXT FOR VALUES. TEMPERATURE-TO-FREQUENCY CONVERTER Another common method of transmitting analog information from a remote location is to convert a voltage to an equivalent value in the frequency domain. ...

Page 17

An offset trim network (f OFFSET ) is included with this OUT circuit to set when the minimum output voltage of OUT the temperature sensor is reached. Potentiometer P1 is required to calibrate the absolute accuracy ...

Page 18

TMP35/TMP36/TMP37 OUTLINE DIMENSIONS 5.00 (0.1968) 4.80 (0.1890 6.20 (0.2441) 4.00 (0.1574) 1 5.80 (0.2284) 3.80 (0.1497) 4 1.27 (0.0500) BSC 1.75 (0.0688) 1.35 (0.0532) 0.25 (0.0098) 0.10 (0.0040) 0.51 (0.0201) COPLANARITY 0.10 0.31 (0.0122) SEATING PLANE COMPLIANT TO ...

Page 19

... TMP37GRT-REEL7 ±3.0 TMP37GRTZ-REEL7 ±3.0 TMP37GSZ ±3.0 TMP37GSZ-REEL ±3.0 TMP37GT9 ±3.0 TMP37GT9-REEL ±3.0 TMP37GT9Z ±3 RoHS Compliant Part Qualified for Automotive Applications. Linear Operating Temperature Range Package Description 10°C to 125°C 8-Lead Standard Small Outline Package (SOIC_N) 10°C to 125°C 5-Lead Small Outline Transistor Package (SOT-23) 10° ...

Page 20

TMP35/TMP36/TMP37 AUTOMOTIVE PRODUCTS The ADW75001Z-0REEL7 model is available with controlled manufacturing to support the quality and reliability requirements of automotive applications. Note that this automotive model may have specifications that differ from the commercial models; therefore, designers should review the ...

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