Texas Instruments TMP114CIYMTR

Overview

TMP114CIYMTR from Texas Instruments is a high-accuracy, ultra-thin digital temperature sensor with I²C/SMBus interface, ±0.2°C max error from 20°C to 50°C, 16-bit resolution (0.0078°C LSB), and 1.08 V–1.98 V supply range - deployed in SSDs, mobile phones, and wearable monitors for thermal management and protection.

For engineers reviewing the TMP114CIYMTR datasheet, TMP114CIYMTR pinout, TMP114CIYMTR application, or TMP114CIYMTR equivalent, key selection criteria include NIST-traceable accuracy across –40°C to 125°C, sub-1 µA average current in continuous mode, 300 ms liquid response time, 1.2-V logic compatibility independent of VDD, and integrated slew-rate alert with hysteresis.

Technical Context

The TMP114CIYMTR integrates a factory-calibrated bandgap-based thermal sensing element with a 16-bit sigma-delta ADC and on-chip oscillator. Its digital core supports continuous or one-shot conversion modes, configurable averaging (1× or 8×), and adjustable conversion periods (31.25 ms to 2 s) via Conv_Period[1:0] bits.

It implements an optional 8-bit CRC for I²C data integrity, independent 1.2-V-compatible input thresholds on SDA/SCL, and dual alert architecture: temperature limit flags (THigh/TLow) with programmable hysteresis plus slew-rate warning triggered by rapid ΔT exceeding user-defined Slew_Limit register value.

Key Specifications

Pinout & Package

Ultra-thin 4-ball PicoStar™ (DSBGA) package: 0.76 mm × 0.76 mm footprint, 0.15 mm height - optimized for placement under shields or beneath BGA packages.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TMP103YFFT and MAX31875R12+, the TMP114CIYMTR uniquely combines NIST-traceable ±0.2°C accuracy, 0.15-mm height, sub-1-µA operation, and integrated slew-rate warning - making it optimal for space-constrained, battery-powered systems requiring predictive thermal control.

Availability

TMP114CIYMTR is available at Aetrix Electronics and suitable for solid-state drives, mobile phones, and wearable fitness monitors requiring stable component supply, long-term lifecycle support, and guaranteed traceable calibration.

Supply support for TMP114CIYMTR 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 TMP114CIYMTR belongs to TI's high-accuracy digital temperature sensor product line, designed specifically for thermal management in ultra-thin, low-power portable electronics where size, precision, and energy efficiency are critical.

FAQ

What is the absolute maximum supply voltage for TMP114CIYMTR?

The absolute maximum supply voltage for TMP114CIYMTR is 2.1 V, as specified in Section 7.1 of the datasheet. Operation above this level risks permanent damage. The recommended operating range remains 1.08 V to 1.98 V, and the device includes brown-out detection (VBOR = 0.92 V) and power-on reset (VPOR = 0.97 V) to ensure robust startup behavior within its rated supply window. Exceeding 2.1 V voids warranty and may degrade long-term reliability.

Does TMP114CIYMTR support I²C Fast Mode Plus (1 MHz)?

Yes, TMP114CIYMTR fully supports I²C Fast Mode Plus with up to 1000 kHz clock frequency, as confirmed in Table 7-6. It meets all timing parameters including tLOW (0.5 µs min), tHIGH (0.26 µs min), and tVDAT (0.45 µs max) across –40°C to 125°C and 1.08–1.98 V supply. The integrated 50 ns spike filter further enhances noise immunity on high-speed buses shared with I³C devices, making TMP114CIYMTR suitable for dense, mixed-protocol system designs.

How does the slew-rate alert function in TMP114CIYMTR?

The slew-rate alert in TMP114CIYMTR monitors the change in temperature between consecutive conversions in continuous mode and triggers when ΔT exceeds the value set in the Slew_Limit register. It operates only in continuous mode, uses the internal oscillator for timing, and has ±15% accuracy due to oscillator variation. The alert sets Slew_Flag and Slew_Status bits in the Alert_Status register, enabling early intervention before thermal limits are breached - a capability not present in standard temperature sensors like TMP103YFFT.

Is TMP114CIYMTR NIST traceable, and what does that mean for system calibration?

Yes, TMP114CIYMTR is NIST traceable: each unit is tested on a production setup calibrated by an ISO/IEC 17025-accredited lab, with documented uncertainty budgets. This means system integrators can rely on the stated ±0.2°C accuracy without performing additional characterization or calibration - reducing development time, test cost, and field failure risk. Traceability applies to the full –40°C to 125°C range and is verified per JEDEC JESD22-A114 standards.

What is the thermal response time of TMP114CIYMTR on a flex PCB?

TMP114CIYMTR achieves a 300 ms thermal response time (τ = 63%) on a single-layer flex PCB with 0.2032 mm thickness, as measured in stirred liquid per Figure 7-11. This rapid response is enabled by its ultra-thin 0.15 mm package height and direct mounting capability under shields or near heat sources. On rigid 2-layer FR4 (1.5748 mm), response slows to 980 ms - confirming that mechanical placement and substrate choice critically impact real-world thermal tracking performance.