ADC

Oscillator

Register

Bank

Serial

Interface

Control

Logic

ADD0

SCL

SDA

GND

V+

ALERT

Copyright © 2017, Texas Instruments Incorporated

EEPROM

Temperature

Sensor

Circuitry

Internal

Thermal

BJT

Temperature (qC)

-55

-30

-5

20

45

70

95

120

145

-0.5

-0.4

-0.3

-0.2

-0.1

0

0.1

0.2

0.3

0.4

0.5

Accu

Average

TMP117 Min/Max

Class AA RTD

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An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.

TMP117

SNOSD82A – JUNE 2018 – REVISED OCTOBER 2018

TMP117x High-Accuracy, Low-Power, Digital Temperature Sensor

1

1 Features

1

•

TMP117 High Accuracy Temperature Sensor

–

±0.1°C (Maximum) From –20°C to +50°C

–

±0.15°C (Maximum) From –40°C to +70°C

–

±0.2°C (Maximum) From –40°C to +100°C

–

±0.25°C (Maximum) From –55°C to +125°C

–

±0.3°C (Maximum) From –55°C to +150°C

•

Operating Temperature Range: –55°C to +150°C

•

Low Power Consumption:

–

3.5-μA, 1-Hz Conversion Cycle

–

150-nA Shutdown Current

•

Supply Range: 1.8 V to 5.5 V

•

16-Bit Resolution: 0.0078°C (1 LSB)

•

Programmable Temperature Alert Limits

•

Selectable Averaging

•

Digital Offset for System Correction

•

General-Purpose EEPROM: 48 Bits

•

NIST Traceability

•

2 Applications

•

Medical Grade: Meets ASTM E1112 and ISO

80601-2-56

•

Environmental Monitoring and Thermostats

•

Wearables

•

Asset Tracking and Cold Chain

•

Gas Meters and Heat Meters

•

Test and Measurement

•

RTDs Replacement: PT100, PT500, PT1000

•

Cold-Junction Compensation of Thermocouples

SPACER

3 Description

The TMP117 is a high-precision digital temperature

sensor. It is designed to meet ASTM E1112 and ISO

80601

requirements

for

electronic

patient

thermometers.

The

TMP117

provides

a

16-bit

temperature result with a resolution of 0.0078°C and

an accuracy of up to ±0.1°C across the temperature

range of -20°C to 50°C with no calibration. The

compatible, programmable alert functionality, and the

device can support up to four devices on a single

bus. Integrated EEPROM is included for device

programming with an additional 48-bits memory

available for general use.

The

low

power

consumption

of

the

TMP117

minimizes the impact of self-heating on measurement

accuracy. The TMP117 operates from 1.8 V to 5.5 V

and typically consumes 3.5 μA.

For non-medical applications, the TMP117 can serve

as a single chip digital alternative to a Platinum RTD.

The TMP117 has an accuracy comparable to a Class

AA RTD, while only using a fraction of the power of

the power typically needed for a PT100 RTD. The

TMP117 simplifies the design effort by removing

many of the complexities of RTDs such as precision

references, matched traces, complicated algorithms,

and calibration.

The TMP117 units are 100% tested on a production

setup that is NIST traceable and verified with

equipment that is calibrated to ISO/IEC 17025

accredited standards.

Device Information(1)

PART NUMBER

PACKAGE

BODY SIZE (NOM)

TMP117

WSON (6)

2.00 mm × 2.00 mm

(1) For all available packages, see the package option addendum

at the end of the data sheet.

Functional Block Diagram

Temperature Accuracy