Features

Temperature range: -55°C ~ +150°C

Temperature accuracy: ±0.5°C (-40°C ~ +125°C)

Supply voltage range: 1.4V ~ 5.5V

Low quiescent current:

Normal operation: ≤10μA (4Hz)

Shutdown mode: ≤1μA

Resolution: 12bits, 0.0625°C

Digital output: SMBusTM and I2C interface

compatibility

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

Description

The TMP112A is a digital temperature sensor with

high-accuracy, low-power, and NTC/PTC thermistor repla-

cements. It can be used for extended temperature measu-

rement in communication, computer, consumer electro-

nics,environmental, industrial and instrumentation applica-

tions. The TMP112A provides ≤ ±0.5°C temperature ac-

curacy with good temperature linearity over the normal

operating range of -40°C to +125°C.The TMP112A can pro-

vide extended temperature measurement mode, extending

the temperature measurement range from -55°Cto

+150°C.

The rated working voltage range of the TMP112A

is 1.4V~5.5V, and the maximum quiescent current in

the entire working rage is 10μA (temperature measurement

frequency 4Hz).The on-chip 12-bit ADC offers resolutions

down to 0.0625°C.

The TMP112A adopts SOT563 is compatible with

SMBus and I2C interface, and allows up to four devices

on one bus. The device also features an SMBus alert func-

tion.