Texas Instruments TMP117AIYBGR

Overview

TMP117AIYBGR from Texas Instruments is a high-accuracy, low-power digital temperature sensor with SMBus™- and I²C-compatible interface, ±0.1 °C 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 medical thermometers, cold-chain asset tracking, and wearable fitness monitors.

For engineers reviewing the TMP117AIYBGR datasheet, TMP117AIYBGR pinout, TMP117AIYBGR application, or TMP117AIYBGR equivalent, key selection criteria include NIST-traceable calibration, programmable alert thresholds, on-chip EEPROM (48 bits), medical-grade compliance (ASTM E1112 / ISO 80601-2-56), and RTD replacement capability for PT100/PT500/PT1000 systems.

Technical Context

The TMP117AIYBGR integrates a precision bandgap-based thermal sensing element with a 16-bit sigma-delta ADC, internal oscillator, and two-wire serial interface logic supporting both I²C and SMBus protocols. It implements configurable averaging (1/2/4/8 conversions) and digital offset correction to reduce noise and system-level drift.

Its functional architecture includes dedicated alert status flags tied to user-programmable high/low temperature limits, a Data_Ready flag synchronized to conversion completion, and EEPROM storage for device configuration and general-purpose data. The device supports up to four units on a single bus and enters shutdown mode with 150 nA current draw.

Key Specifications

Pinout & Package

The TMP117AIYBGR is packaged in a 1.53 mm × 1.00 mm, 6-pin DSBGA (YBG) package with bottom-side thermal pad for enhanced heat dissipation in space-constrained PCB layouts.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX31875RASD+T and ADT7420TRZ-REEL7, the TMP117AIYBGR delivers tighter accuracy, built-in EEPROM for offset storage, and formal medical-grade validation - making it the only option among the three qualified for electronic patient thermometer designs without additional system-level calibration.

Availability

TMP117AIYBGR is available at Aetrix Electronics and suitable for electronic thermometers, cold-chain asset tracking, and wearable fitness monitors requiring stable component supply, long-lifecycle support, and consistent NIST-traceable performance.

Supply support for TMP117AIYBGR 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 U.S.-based semiconductor company specializing in analog and embedded processing technologies, with leadership in precision sensing, power management, and signal chain solutions.

The TMP117AIYBGR belongs to TI's high-accuracy temperature sensor product line, engineered specifically for medical diagnostics, industrial thermal protection, and battery-powered IoT nodes where calibration stability and ultra-low power are critical.

FAQ

What is the maximum accuracy specification of the TMP117AIYBGR over its full operating temperature range?

The TMP117AIYBGR achieves ±0.1 °C maximum accuracy from –20 °C to 50 °C, ±0.15 °C from –40 °C to 70 °C, ±0.2 °C from –40 °C to 100 °C, ±0.25 °C from –55 °C to 125 °C, and ±0.3 °C from –55 °C to 150 °C. These values are production-tested and NIST-traceable, with no system-level calibration required to meet them.

Does the TMP117AIYBGR support medical-grade compliance standards?

Yes, the TMP117AIYBGR meets ASTM E1112 and ISO 80601-2-56 requirements for electronic patient thermometers. Its production test setup is NIST-traceable and verified using ISO/IEC 17025-accredited equipment - enabling direct use in FDA-regulated clinical devices without additional validation overhead.

Can the TMP117AIYBGR replace platinum RTDs like PT100 in system designs?

Yes, the TMP117AIYBGR is explicitly positioned as a single-chip digital alternative to PT100, PT500, and PT1000 RTDs. It matches Class AA RTD accuracy while eliminating precision references, matched PCB traces, complex linearization algorithms, and factory calibration - reducing BOM count and firmware complexity significantly.

What is the function of the ADD0 pin on the TMP117AIYBGR?

The ADD0 pin on the TMP117AIYBGR selects the I²C slave address by connecting it to GND, V+, SDA, or SCL. This allows up to four TMP117AIYBGR devices to share a single I²C bus without address conflict, simplifying multi-sensor thermal mapping in compact systems such as wearable arrays or multi-zone HVAC controllers.

How does the TMP117AIYBGR manage power consumption in battery-operated applications?

The TMP117AIYBGR draws just 3.5 μA during a 1-Hz conversion cycle and only 150 nA in shutdown mode. Its programmable averaging and flexible conversion modes (one-shot or continuous) let designers trade off update rate for average current - enabling multi-year operation on CR2032 cells in wireless environmental sensors and portable medical devices.