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1 Features

? TMP112A Accuracy Without Calibration:

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

– ±1.0°C (Maximum) From –40°C to +125°C

? TMP112B Accuracy Without Calibration:

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

– ±1.0°C (Maximum) From –40°C to +125°C

? TMP112N Accuracy Without Calibration:

– ±1.0°C (Maximum) From –40°C to +125°C

? TMP112Dx Accuracy Without Calibration:

– ±0.5°C (Maximum) From -25°C to 85°C (V+ ≥

1.5V)

– ±1.0°C (Maximum) From –40°C to 125°C

? SOT563 Package (1.6mm × 1.6mm)

? X2SON Package (0.8mm × 0.8mm)

? Low Quiescent Current:

– 10-μA Active (Maximum), 1-μA Shutdown

(Maximum)

? Supply Range: 1.4V to 3.6V

? Resolution: 12 Bits

? Digital Output: SMBus?, Two-Wire, and I 2C

Interface Compatibility

? NIST Traceable

2 Applications

? Building automation

– Occupancy detection

– Video doorbell

– HVAC: Wireless environmental sensor

? Factory automation & control

– Machine vision camera

– Industrial PC: Single board computer

– CPU (PLC controller)

? Cold chain

? Data center & enterprise computing

– Solid state drive (SSD)

– Rack Server Motherboard

? Personal electronics

– PC & notebooks, tablets

– Digital still & video camera

– Augmented reality glasses

– Smart speakers

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, TMP112B,

TMP112Dx offer 0.5°C accuracy and are optimized to

provide the best PSR performance for 3.3V, 1.8V and

≥1.5V 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 1.6mm × 1.6mm SOT563 package is 68

smaller footprint than an SOT23 package while

TMP112Dx utilizes ultra-small (0.64mm2) 5-pin

package. The TMP112 family features SMBus, twowire

and I2C interface compatibility, and allows up to

four devices on one bus. The device also features

an SMBus alert function or variant. The device is

specified to operate over supply voltages from 1.4V

to 3.6V with the typical quiescent current 3.2μA 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.