Texas Instruments TMP114AIYMTT

Overview

TMP114AIYMTT from Texas Instruments is a high-accuracy, ultra-thin digital temperature sensor with I²C/SMBus interface, ±0.2°C accuracy from 20°C to 50°C, 16-bit resolution (0.0078°C LSB), and 1.08 V–1.98 V supply range - deployed in mobile phones, SSDs, and wearable fitness monitors for real-time thermal management.

For engineers reviewing the TMP114AIYMTT datasheet, TMP114AIYMTT pinout, TMP114AIYMTT application, or TMP114AIYMTT equivalent, this page delivers verified technical context, package mapping, I²C timing compliance, NIST-traceable accuracy validation, and low-power design trade-offs for battery-constrained embedded systems.

Technical Context

The TMP114AIYMTT integrates a factory-calibrated bandgap-based thermal sensing element with a 16-bit sigma-delta ADC and on-chip oscillator, supporting continuous or one-shot conversion modes. Its 1.2-V-compatible logic inputs operate independently of VDD, enabling interoperability with 1.2 V/1.8 V I²C buses.

It implements optional CRC-8 for data integrity, configurable slew-rate warning (±15% tolerance), and dual threshold alerting with hysteresis (0.1°C). The device enters shutdown mode with 0.16 µA typical current and achieves 300 ms response time on flex PCBs.

Key Specifications

Pinout & Package

PicoStar™ (DSBGA) 4-ball package, 0.76 mm × 0.76 mm footprint, 0.15-mm profile - optimized for volume-constrained mobile and wearable PCBs.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar digital temperature sensor applications.

Compared with MAX31875RASD+ and STTS22H, the TMP114AIYMTT uniquely combines ultra-thin packaging, sub-1.2-V compatibility, NIST-traceable accuracy, and slew-rate alerting - making it optimal for space- and power-constrained portable electronics requiring predictive thermal control.

Availability

TMP114AIYMTT is available at Aetrix Electronics and suitable for mobile phones, solid-state drives, and wearable fitness monitors requiring stable component supply, long-term lifecycle support, and traceable sourcing for high-volume production.

Supply support for TMP114AIYMTT 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 company specializing in analog and embedded processing technologies, with leadership in precision sensing, power management, and signal chain solutions.

The TMP114 product line targets ultra-low-power, high-accuracy thermal sensing in space-constrained portable electronics - delivering factory-calibrated performance without requiring system-level compensation.

FAQ

What is the absolute maximum supply voltage for the TMP114AIYMTT?

The absolute maximum supply voltage (VDD) for the TMP114AIYMTT is 2.1 V, per Section 7.1 of the datasheet. Exceeding this value may cause permanent damage. The recommended operating range remains 1.08 V to 1.98 V; operation above 1.98 V voids accuracy guarantees and reliability specifications. Always include a 100-nF bypass capacitor close to the VDD pin for stable operation.

Does the TMP114AIYMTT support I²C Fast Mode Plus (1 MHz)?

Yes, the TMP114AIYMTT supports I²C Fast Mode Plus up to 1 MHz, as confirmed in Section 7.6 of the datasheet. It meets timing requirements including t_LOW, t_HIGH, and t_VDAT across –40°C to 125°C at VDD = 1.08–1.98 V. Pull-up resistors must be selected to meet rise/fall time specs (e.g., ≤300 ns for SDA/SCL), especially at higher frequencies.

How is the ±0.2°C accuracy of the TMP114AIYMTT validated?

The ±0.2°C accuracy of the TMP114AIYMTT from 20°C to 50°C is validated using a production test setup calibrated against NIST-traceable standards per ISO/IEC 17025. Each unit undergoes full-range temperature testing and trimming. This specification applies in both continuous and one-shot modes with conversion periods ≥31.25 ms and averaging enabled or disabled.

Can the TMP114AIYMTT be placed under other surface-mount components?

Yes - the TMP114AIYMTT's 0.15-mm PicoStar™ DSBGA package is specifically designed for placement under BGA or QFN components. Its ultra-low profile minimizes thermal resistance between the sensor die and adjacent ICs, enabling direct die-temperature measurement. Layout guidelines in Section 9.5 recommend minimal copper pour under the package to avoid thermal shunting.

What happens to the Alert_Status register flags after an I²C read?

After reading the Alert_Status register, the THigh_Flag and TLow_Flag bits clear automatically, but the corresponding THigh_Status and TLow_Status bits remain set until the measured temperature crosses back within the hysteresis window (e.g., THigh_Limit − THigh_Hyst). This behavior ensures thermal events are not missed between reads - the flags act as latched indicators of boundary crossings since last status read.