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TMP112D-Q1

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Automotive, ±0.4°C accurate I²C temperature sensor with alert option

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Data sheet

TMP112D-Q1

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Product details

Local sensor accuracy (max) 0.4 Type Local Operating temperature range (°C) -40 to 125 Supply voltage (min) (V) 1.4 Interface type I2C, SMBus Supply voltage (max) (V) 3.6 Features ALERT, One-shot conversion Supply current (max) (µA) 9.1 Temp resolution (max) (bps) 12 Remote channels (#) 0 Addresses 4 Rating Automotive
Local sensor accuracy (max) 0.4 Type Local Operating temperature range (°C) -40 to 125 Supply voltage (min) (V) 1.4 Interface type I2C, SMBus Supply voltage (max) (V) 3.6 Features ALERT, One-shot conversion Supply current (max) (µA) 9.1 Temp resolution (max) (bps) 12 Remote channels (#) 0 Addresses 4 Rating Automotive
SOT-5X3 (DRL) 6 2.56 mm² 1.6 x 1.6
  • AEC-Q100 qualified for automotive applications:
    • TMP112-Q1/TMP112D-Q1: –40°C to 125°C
    • Device HBM ESD classification level 2
    • Device CDM ESD classification level C6
  • Functional Safety-Capable
  • TMP112-Q1 Accuracy without calibration:
    • ±0.5°C (Max) over 0°C to 65°C
    • ±1°C (Max) over –40°C to 125°C
  • TMP112D-Q1 Accuracy without calibration:
    • ±0.4°C (Max) over 0°C to 65°C
    • ±0.5°C (Max) over -25°C to 85°C
    • ±0.7°C (Max) over –40°C to 125°C
  • Low quiescent current:
    • TMP112-Q1: 10µA active (Max), 1µA shutdown (Max)
    • TMP112D-Q1: 9µA active (Max), 0.35µA shutdown (Max)
  • Available packages:
    • SOT563 package (1.6mm × 1.6mm)
    • X2SON package (0.8mm × 0.8mm)
  • Supply range: 1.4V to 3.6V
  • Resolution: 12 bits
  • Digital output: SMBus, two-wire and I2C interface compatibility
  • AEC-Q100 qualified for automotive applications:
    • TMP112-Q1/TMP112D-Q1: –40°C to 125°C
    • Device HBM ESD classification level 2
    • Device CDM ESD classification level C6
  • Functional Safety-Capable
  • TMP112-Q1 Accuracy without calibration:
    • ±0.5°C (Max) over 0°C to 65°C
    • ±1°C (Max) over –40°C to 125°C
  • TMP112D-Q1 Accuracy without calibration:
    • ±0.4°C (Max) over 0°C to 65°C
    • ±0.5°C (Max) over -25°C to 85°C
    • ±0.7°C (Max) over –40°C to 125°C
  • Low quiescent current:
    • TMP112-Q1: 10µA active (Max), 1µA shutdown (Max)
    • TMP112D-Q1: 9µA active (Max), 0.35µA shutdown (Max)
  • Available packages:
    • SOT563 package (1.6mm × 1.6mm)
    • X2SON package (0.8mm × 0.8mm)
  • Supply range: 1.4V to 3.6V
  • Resolution: 12 bits
  • Digital output: SMBus, two-wire and I2C interface compatibility

The TMP112-Q1 and TMP112D-Q1 devices are digital temperature sensors designed for NTC/PTC thermistor replacement where high accuracy is required. These devices offer an accuracy of ±0.4°C/±0.5°C without requiring calibration or external component signal conditioning. TMP112-Q1 and TMP112D-Q1 are highly linear and do not require complex calculations or lookup tables to derive the temperature. The calibrating for improved accuracy feature in TMP112-Q1 (see the Calibrating for Improved Accuracy section) allows users to calibrate for an accuracy as good as ±0.17°C. The on-chip 12-bit ADC offers resolutions down to 0.0625°C.

TMP112-Q1 and TMP112D-Q1 come with 0.8mm × 0.8mm X2SON (DPW) and 1.6mm × 1.6mm SOT563 (DRL) packages. These devices feature SMBus™, two-wire and I2C interface compatibility, and allow up to four devices on one bus along with SMBus alert function. These devices are specified to operate over 1.4V to 3.6V supply voltage. The maximum quiescent current is around 10µA over the full operating range.

The TMP112-Q1 and TMP112D-Q1 devices are digital temperature sensors designed for NTC/PTC thermistor replacement where high accuracy is required. These devices offer an accuracy of ±0.4°C/±0.5°C without requiring calibration or external component signal conditioning. TMP112-Q1 and TMP112D-Q1 are highly linear and do not require complex calculations or lookup tables to derive the temperature. The calibrating for improved accuracy feature in TMP112-Q1 (see the Calibrating for Improved Accuracy section) allows users to calibrate for an accuracy as good as ±0.17°C. The on-chip 12-bit ADC offers resolutions down to 0.0625°C.

TMP112-Q1 and TMP112D-Q1 come with 0.8mm × 0.8mm X2SON (DPW) and 1.6mm × 1.6mm SOT563 (DRL) packages. These devices feature SMBus™, two-wire and I2C interface compatibility, and allow up to four devices on one bus along with SMBus alert function. These devices are specified to operate over 1.4V to 3.6V supply voltage. The maximum quiescent current is around 10µA over the full operating range.
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* Data sheet TMP112-Q1 and TMP112D-Q1 Automotive Grade High-Accuracy, Low-Power, Digital Temperature Sensor in SOT563 and X2SON Packages datasheet (Rev. G) PDF | HTML 23 May 2025

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Evaluation board

TMP112EVM — TMP112 high-precision, low-power, digital temperature sensor evaluation module

The TMP112EVM allows users to evaluate the performance of the TMP112 digital temperature sensor. The evaluation module (EVM) comes in a USB-stick form factor, with an onboard MSP430F5528 microcontroller that interfaces with both the host computer and the TMP112 device using an I²C interface. (...)

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