tmp17gs-reel Analog Devices, Inc., tmp17gs-reel Datasheet

tmp17gs-reel

Manufacturer Part Number

tmp17gs-reel

Description

Low Cost, Current Output Temperature Transducer

Manufacturer

Analog Devices, Inc.

Datasheet

1.TMP17GS-REEL.pdf (8 pages)

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GENERAL DESCRIPTION

The TMP17 is a monolithic integrated circuit temperature trans-

ducer that provides an output current proportional to absolute

temperature. For a wide range of supply voltages, the transducer

acts as a high impedance temperature dependent current source

of 1 µA/K. Improved design and laser wafer trimming of the

IC’s thin-film resistors allow the TMP17 to achieve absolute

accuracy levels and nonlinearity errors previously unattainable

at a comparable price.

The TMP17 can be employed in applications from –40 C to

+105 C where conventional temperature sensors (i.e., thermistor,

RTD, thermocouple, diode) are currently being used. Expensive

linearization circuitry, precision voltage references, bridge

components, resistance measuring circuitry, and cold junction

compensation are not required with the TMP17.

The TMP17 is available in a low cost SOIC-8 surface-mount

package.

PRODUCT HIGHLIGHTS

1. A wide operating temperature range (–40 C to +105 C) and

2. The TMP17 is electrically rugged; supply irregularities and

3. Because the TMP17 is a temperature dependent current

*Protected by U.S. Patent No. 4,123,698

REV. A

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. 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 companies.

FEATURES

Operating Temperature Range: –40 C to +105 C

Single-Supply Operation: 4 V to 30 V

Excellent Repeatability and Stability

High Level Output: 1 A/K

Monolithic IC: Temperature In/Current Out

Minimal Self-Heating Errors

APPLICATIONS

Appliance Temperature Sensor

Automotive Temperature Measurement and Control

HVAC System Monitoring

Industrial Temperature Control

Thermocouple Cold Junction Compensation

highly linear output make the TMP17 an ideal substitute for

older, more limited sensor technologies (i.e., thermistors, RTDs,

diodes, thermocouples).

variations or reverse voltages up to 20 V will not damage

the device.

source, it is immune to voltage noise pickup and IR drops in

the signal leads when used remotely.

4. The high output impedance of the TMP17 provides greater

5. Laser wafer trimming and temperature testing ensures that

6. Initial system accuracy will not degrade significantly over time.

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 781/329-4700

Fax: 781/326-8703

than 0.5 C/V rejection of supply voltage drift and ripple.

TMP17 units are easily interchangeable.

The TMP17 has proven long term performance and repeat-

ability advantages inherent in integrated circuit design and

construction.

248

378

343

273

–45

FUNCTIONAL BLOCK DIAGRAM

Low Cost, Current Output

Temperature Transducer

Figure 1. Transfer Characteristic

–25

V+

V–

PACKAGE DIAGRAM

V+

V–

NC = NO CONNECT

TEMPERATURE – C

(Not to Scale)

SOIC-8

TOP VIEW

1 A/K

TMP17

www.analog.com

105

125

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tmp17gs-reel Summary of contents

Page 1

... A/K 273 248 –45 –25 0 TEMPERATURE – C Figure 1. Transfer Characteristic One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781/329-4700 Fax: 781/326-8703 © 2003 Analog Devices, Inc. All rights reserved. * TMP17 ...

Page 2

... C (298 Over Rated Temperature Note 150 C for 500 Hrs V– +373 +423 +100 +150 Model +200 +300 TMP17FS 2.5 C +212 273.15 TMP17GS 3.5 C –2– ≤ 105 C, unless otherwise noted.) Min Typ Max ± 2.5 ± 3.5 ± 3.5 ± 4.5 0.5 0.3 0.3 2 0.5 298.2 1 0.2 4 0.2 4 ...

Page 3

–1 – –3 –4 –5 –6 –50 – TEMPERATURE – C TPC 1. Accuracy vs. Temperature 100 ...

Page 4

... Specifications table. The error limits are a combination of initial error, scale factor variation, and nonlinearity deviation from the ideal 1 µA/K output. TPC 1 graphically depicts the guaranteed limits of accuracy for a TMP17GS. The TMP17 has a highly linear output in comparison to older technology sensors (i.e., thermistors, RTDs, and thermocouples), thus a nonlinearity error specification is separated from the absolute accuracy given over temperature ...

Page 5

If greater accuracy is desired, initial calibration and scale factor errors can be removed by using the TMP17 in the circuit of Figure 5. 5k 97.6k + 8.66k REF43 OP196 7.87k + TMP17 – V– Figure 5. Two ...

Page 6

TMP17 The circuit in Figure 8 demonstrates a method in which a voltage output can be derived in a differential temperature measurement 10k TMP17 – OP196 R1 TMP17 50k – 10k –V Figure 8. Differential Measurements ...

Page 7

R and R determine the limits of temperature controlled HIGH LOW by the potentiometer R . The circuit shown operates over the SET temperature range – +105 C. The reference maintains a constant set point voltage and ensures ...

Page 8

TMP17 0.25 (0.0098) 0.10 (0.0040) COPLANARITY CONTROLLING DIMENSIONS ARE IN MILLIMETERS; INCH DIMENSIONS (IN PARENTHESES) ARE ROUNDED-OFF MILLIMETER EQUIVALENTS FOR REFERENCE ONLY AND ARE NOT APPROPRIATE FOR USE IN DESIGN Revision History Location 1/03—Data Sheet changed from REV ...

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