Texas Instruments TMP117AIDRVT

Overview

TMP117AIDRVT from Texas Instruments is a high-accuracy, low-power digital temperature sensor with SMBus™- and I²C-compatible interface, ±0.1 °C max accuracy from –20 °C to 50 °C, 16-bit resolution (0.0078 °C/LSB), and operating range of –55 °C to 150 °C - deployed in electronic thermometers, cold chain asset tracking, and wearable fitness monitors.

For engineers reviewing the TMP117AIDRVT datasheet, TMP117AIDRVT pinout, TMP117AIDRVT application, or TMP117AIDRVT equivalent, key selection considerations include medical-grade ASTM E1112/ISO 80601-2-56 compliance, NIST-traceable calibration, programmable alert thresholds, 48-bit general-purpose EEPROM, and RTD-replacement capability for PT100/PT500/PT1000 systems.

Technical Context

The TMP117AIDRVT integrates a precision bandgap-based thermal sensing element with a 16-bit sigma-delta ADC, internal oscillator, and two-wire serial interface logic supporting standard/fast-mode I²C (up to 400 kHz) and SMBus protocols. It supports up to four devices on a single bus via ADD0 address select pin.

Its functional architecture includes configurable averaging (1/2/4/8 conversions), digital offset correction, programmable high/low temperature alert limits, and EEPROM-backed configuration storage. The device enters shutdown mode with 150 nA current draw and achieves 3.5 μA quiescent current at 1-Hz conversion cycle with 8-sample averaging.

Key Specifications

Pinout & Package

The TMP117AIDRVT uses a 6-pin WSON (DRV) package measuring 2.00 mm × 2.00 mm with exposed thermal pad for enhanced thermal dissipation in high-temperature environments.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-accuracy temperature sensing applications.

Compared with MAX31875ASA+T and ADT7420TRZ-REEL7, the TMP117AIDRVT delivers superior accuracy (±0.1 °C vs ±0.25 °C), built-in EEPROM for persistent calibration, and full medical-grade certification - making it the only option qualified for electronic patient thermometers and regulated diagnostic equipment.

Availability

TMP117AIDRVT is available at Aetrix Electronics and suitable for electronic thermometers, cold chain asset tracking, and wearable fitness monitors requiring stable component supply across long-lifecycle medical and industrial programs.

Supply support for TMP117AIDRVT includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor leader specializing in analog and embedded processing technologies, with decades of expertise in precision sensing and medical-grade IC design.

The TMP117 product line was engineered specifically for applications demanding clinical-grade thermal accuracy and regulatory compliance - including electronic patient thermometers, diagnostic instrumentation, and certified environmental monitoring systems.

FAQ

What is the maximum accuracy specification of the TMP117AIDRVT over its full operating temperature range?

The TMP117AIDRVT achieves ±0.3 °C maximum accuracy from –55 °C to 150 °C. Its highest accuracy is ±0.1 °C (maximum) within the –20 °C to 50 °C range - the clinically relevant zone for electronic patient thermometers. This performance is verified across production units using NIST-traceable test equipment calibrated to ISO/IEC 17025 standards, and the TMP117AIDRVT maintains this accuracy without system-level calibration.

Does the TMP117AIDRVT support medical-grade certifications required for electronic thermometers?

Yes, the TMP117AIDRVT meets ASTM E1112 and ISO 80601-2-56 standards for electronic patient thermometers. These certifications validate its accuracy, repeatability, long-term stability, and thermal response characteristics under clinical conditions. The TMP117AIDRVT is explicitly designed and tested for this use case, and its production test flow includes NIST-traceable validation - making the TMP117AIDRVT suitable for FDA-regulated medical devices.

How does the TMP117AIDRVT replace traditional platinum RTDs like PT100 in system design?

The TMP117AIDRVT matches Class AA RTD accuracy (±0.1 °C at 0 °C) while eliminating complex analog front-end requirements. Unlike PT100 sensors, the TMP117AIDRVT requires no precision current sources, matched PCB traces, or linearization algorithms. Its integrated 16-bit ADC, digital offset correction, and 48-bit EEPROM simplify calibration and reduce BOM count - making the TMP117AIDRVT a true single-chip RTD replacement for gas meters, heat meters, and industrial transmitters.

What power-saving features does the TMP117AIDRVT offer for battery-operated applications?

The TMP117AIDRVT provides multiple low-power modes: 150 nA shutdown current, 3.5 μA quiescent current at 1-Hz conversion with 8-sample averaging, and configurable standby periods between conversions. Its ability to operate down to 1.8 V enables direct integration with single-cell Li-ion or coin-cell batteries. The ALERT pin supports wake-on-event functionality, allowing host MCUs to remain in deep sleep until a temperature threshold is breached - extending operational life in wireless environmental sensors and wearables using the TMP117AIDRVT.

Can multiple TMP117AIDRVT sensors share the same I²C bus, and how is addressing managed?

Yes, up to four TMP117AIDRVT devices can operate on a single I²C bus using the ADD0 pin to configure unique slave addresses (0x48–0x4B). ADD0 accepts GND, V+, SDA, or SCL as logic levels, enabling flexible hardware addressing without external jumpers or resistors. This feature simplifies multi-zone thermal monitoring in thermostats, server racks, and industrial control panels - all coordinated through a single two-wire interface without bus contention or arbitration overhead in the TMP117AIDRVT.