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.