Diode

Temp.

Sensor

DS

A/D

Converter

OSC

Control

Logic

Serial

Interface

Config.

andTemp.

Register

TMP112

Temperature

SCL

1

3

6

4

ALERT

SDA

GND

2

5

V+

ADD0

Product

Folder

Order

Now

Technical

Documents

Tools &

Software

Support &

Community

Reference

Design

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.

TMP112

SBOS473F – MARCH 2009 – REVISED FEBRUARY 2018

TMP112x High-Accuracy, Low-Power, Digital Temperature Sensors With SMBus and Two-

Wire Serial Interface in SOT563

1

1 Features

1

•

TMP112A Accuracy Without Calibration :

–

0.5°C (Maximum) From 0°C to +65°C (3.3 V)

–

1.0°C (Maximum) From –40°C to +125°C

•

TMP112B Accuracy Without Calibration :

–

0.5°C (Maximum) From 0°C to +65°C (1.8 V)

–

1.0°C (Maximum) From –40°C to +125°C

•

TMP112N Accuracy Without Calibration:

–

1.0°C (Maximum) From –40°C to +125°C

•

SOT563 Package (1.6 mm × 1.6 mm)

•

Low Quiescent Current:

–

10-μA Active (Maximum), 1-μA Shutdown

(Maximum)

•

Supply Range: 1.4 V to 3.6 V

•

Resolution: 12 Bits

•

Interface Compatibility

•

NIST Traceable

2 Applications

•

Portable and Battery-Powered Applications

•

Power-Supply Temperature Monitoring

•

Computer Peripheral Thermal Protection

•

Notebook Computers

•

Battery Management

•

Office Machines

•

Thermostat Controls

•

Electromechanical Device Temperatures

•

General Temperature Measurements:

–

Industrial Controls

–

Test Equipment

–

Medical Instrumentation

3 Description

The TMP112 family of devices are digital temperature

sensors

designed

for

high-accuracy,

low-power,

NTC/PTC

thermistor

replacements

where

high

accuracy is required. The TMP112A and TMP112B

offers 0.5°C accuracy and are optimized to provide

the best PSR performance for 3.3V and 1.8V

operation respectively, while TMP112N offers 1°C

accuracy. These temperature sensors are highly

linear and do not require complex calculations or

lookup tables to derive the temperature. The on-chip

12-bit ADC offers resolutions down to 0.0625°C.

The 1.6-mm × 1.6-mm SOT563 package is 68%

smaller footprint than an SOT23 package. The

interface compatibility, and allows up to four devices

on one bus. The device also features an SMBus alert

function. The device is specified to operate over

supply voltages from 1.4 to 3.6 V with the maximum

quiescent current of 10 µA over the full operating

range.

The

TMP112

family

is

designed

for

extended

temperature

measurement

in

communication,

computer, consumer, environmental, industrial, and

instrumentation applications. The device is specified

for operation over a temperature range of –40°C to

+125°C.

The TMP112 family production units are 100% tested

against sensors that are NIST-traceable and are

verified with equipment that are NIST-traceable

through ISO/IEC 17025 accredited calibrations.

Device Information(1)

PART NUMBER

PACKAGE

BODY SIZE (NOM)

TMP112x

SOT563 (6)

1.60 mm × 1.20 mm

(1) For all available packages, see the orderable addendum at

the end of the data sheet.

Block Diagram