Texas Instruments TMP110D2IDPWR

Overview

TMP110D2IDPWR from Texas Instruments is an ultra-small, ±1.0°C accurate I²C digital temperature sensor in a 5-pin X2SON package (0.8 mm × 0.8 mm × 0.4 mm), designed for cost-sensitive thermal monitoring in space-constrained systems. It delivers 12-bit resolution (0.0625°C LSB), operates from 1.14 V to 5.5 V, and achieves 3.2 µA average current at 1 Hz - enabling long battery life in occupancy detection and SSD thermal management.

For engineers reviewing the TMP110D2IDPWR datasheet, TMP110D2IDPWR pinout, TMP110D2IDPWR application, or TMP110D2IDPWR equivalent, this page provides verified functional specifications, variant-specific ALERT pin behavior, real-world thermal accuracy across –40°C to 125°C, and validated alternatives for scalable multi-sensor I²C bus designs.

Technical Context

The TMP110D2IDPWR implements a factory-calibrated bandgap-based temperature sensing element with a 12-bit SAR ADC and on-chip digital signal processing. Its dual-mode operation (continuous conversion or one-shot) is controlled via the Configuration Register's Shutdown bit and Conversion_Rate bits, enabling precise trade-offs between response latency (10.25–11.25 ms active conversion time) and power consumption.

This variant features a dedicated open-drain ALERT output (Pin 3), activated when temperature exceeds programmable THigh_Limit thresholds - supporting comparator-mode thermal event detection without host polling. It maintains I²C/SMBus timing compliance up to 1 MHz (Fast Mode Plus) and supports I³C Mixed Bus coexistence.

Key Specifications

Pinout & Package

Package: X2SON-5 (DPW), 0.8 mm × 0.8 mm × 0.4 mm, leadless, wettable flank compatible.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TMP110D2IDPWR, TMP112DRLR offers tighter accuracy but doubles footprint and lacks independent ALERT/ADDR pin separation, while TMP102DBVR sacrifices ±1.0°C performance and real-time alert capability to reduce BOM cost - making TMP110D2IDPWR optimal for space-constrained, battery-powered thermal interrupt systems.

Availability

TMP110D2IDPWR is available at Aetrix Electronics and suitable for occupancy detection, SSD thermal monitoring, and rack server motherboard applications requiring stable component supply, long-term lifecycle assurance, and consistent parametric performance across production batches.

Supply support for TMP110D2IDPWR 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, embedded processing, and connectivity technologies, with decades of expertise in precision sensing and low-power design.

The TMP110 product line targets cost-sensitive, space-constrained thermal monitoring in battery-powered and industrial systems - delivering factory-calibrated accuracy, ultra-small packaging, and intelligent alerting without sacrificing I²C compatibility.

FAQ

What is the accuracy specification of the TMP110D2IDPWR across its full operating temperature range?

The TMP110D2IDPWR guarantees ±1.0°C maximum accuracy from –40°C to 125°C when supplied with V+ ≥ 1.4 V. At lower supply voltages (1.14 V ≤ V+ < 1.4 V), accuracy degrades to ±2.0°C. This specification is factory-calibrated and does not require end-user calibration. The TMP110D2IDPWR achieves this performance using an on-die bandgap sensor and trimmed 12-bit ADC, validated across process, voltage, and temperature corners.

Does the TMP110D2IDPWR support I²C Fast Mode Plus (1 MHz), and what are the timing requirements?

Yes, the TMP110D2IDPWR fully supports I²C Fast Mode Plus with SCL frequencies up to 1 MHz. Key timing parameters include t(LOW) ≥ 0.5 µs, t(HIGH) ≥ 0.26 µs, and t(HDDAT) ≤ 150 ns. These values are specified over –40°C to 125°C and 1.14 V to 5.5 V supply. The device also meets SMBus 3.0 timing and supports I³C Mixed Bus coexistence, ensuring interoperability with modern controller ecosystems.

How does the ALERT pin on the TMP110D2IDPWR function, and what configuration registers control it?

The ALERT pin on the TMP110D2IDPWR is an open-drain output that asserts low when temperature exceeds the THigh_Limit register value. Its behavior is controlled by Alert_Mode (bit 4) and Polarity (bit 3) in the Configuration Register (0x01). In comparator mode (Alert_Mode = 0), ALERT remains active until temperature falls below TLow_Limit; in alert mode (Alert_Mode = 1), it clears on any register read. The TMP110D2IDPWR uses this pin to eliminate polling overhead in thermal protection systems.

What is the power consumption profile of the TMP110D2IDPWR in continuous conversion mode at 1 Hz?

In continuous conversion mode at 1 Hz, the TMP110D2IDPWR draws 3.2 µA average current (typical), composed of 55 µA during 10.25 ms active conversion and 2.6 µA during standby. This enables >5-year operation on a CR2032 coin cell. Shutdown current is just 0.15 µA (typical), and the device supports one-shot mode for further power reduction in intermittent monitoring applications - all verified per TI SNIS233A datasheet Section 6.5.

Is the TMP110D2IDPWR pin-compatible with other variants in the TMP110 family, such as TMP110D0 or TMP110D3?

Yes, all TMP110 variants - including TMP110D0, TMP110D1, TMP110D2, TMP110D3, and TMP110D - share identical X2SON-5 pinout and mechanical footprint. The TMP110D2IDPWR specifically implements the ALERT pin variant (Pin 3 = ALERT), whereas TMP110D uses Pin 3 as ADD0. Software is fully compatible across variants, allowing seamless upgrade paths from ±0.5°C (TMP112) or ±2.0°C (TMP102) predecessors without PCB changes.