Texas Instruments TMP103DYFFR

Overview

TMP103DYFFR from Texas Instruments is a low-power, digital temperature sensor IC in a 4-ball DSBGA (WCSP) package, featuring I²C/SMBus-compatible two-wire interface, ±1°C typical accuracy over –10°C to 100°C, 1°C resolution, and 3-μA active quiescent current at 0.25 Hz conversion rate - deployed for thermal monitoring in SSDs, notebooks, and telecom equipment.

For engineers reviewing the TMP103DYFFR datasheet, TMP103DYFFR pinout, TMP103DYFFR application, or TMP103DYFFR equivalent, key selection criteria include its MDA (Multiple Device Access) capability for global bus reads across up to eight devices, shutdown current of ≤1 μA, 1.4 V–3.6 V supply range, and space-constrained 0.76 mm × 0.76 mm WCSP footprint.

Technical Context

The TMP103DYFFR implements a monolithic diode-based temperature sensing element with on-chip 8-bit ADC and digital control logic. Its serial interface supports both standard I²C (up to 400 kHz) and high-speed mode (up to 3.4 MHz), with integrated Schmitt triggers and spike suppression on SDA/SCL pins.

It operates in three functional modes: shutdown (≤1 μA), one-shot (26 ms conversion, auto-return to shutdown), and continuous conversion (configurable at 0.25/1/4/8 Hz via CR1/CR0 bits). The device includes programmable THIGH/TLOW registers and latchable flag bits (FH/FL) for temperature window monitoring without host polling.

Key Specifications

Pinout & Package

Package: 4-ball DSBGA (YFF), 0.76 mm × 0.76 mm, 0.4-mm pitch, bottom-side solder balls.

Key Features

Applications

Equivalent & Alternatives

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

Compared with LM75BIMM/NOPB and STTS751IDT, the TMP103DYFFR uniquely delivers MDA-enabled bus efficiency, ultra-small WCSP packaging, and sub-μA shutdown current - making it optimal for space- and power-constrained multi-zone thermal systems where coordinated sensing is critical.

Availability

TMP103DYFFR is available at Aetrix Electronics and suitable for SSD thermal management, notebook system monitoring, telecom base station supervision, set-top box power management, and industrial embedded temperature logging requiring stable component supply and long-term lifecycle support.

Supply support for TMP103DYFFR 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, low-power design, and industrial-grade reliability.

The TMP103DYFFR belongs to TI's precision analog temperature sensor product line, engineered specifically for ultra-low-power, multi-node thermal monitoring in space-constrained portable and infrastructure electronics.

FAQ

What is the package type and dimensions of the TMP103DYFFR?

The TMP103DYFFR uses a 4-ball DSBGA (Wafer Chip-Scale Package) with YFF designation, measuring 0.76 mm × 0.76 mm with 0.4-mm ball pitch. This ultra-compact footprint is optimized for high-density PCB layouts in SSDs and mobile devices. The package exposes the silicon die directly through solder bumps, enabling efficient thermal conduction from the die to the PCB.

Does the TMP103DYFFR support multiple devices on the same I²C bus?

Yes, the TMP103DYFFR supports Multiple Device Access (MDA), allowing up to eight devices - including TMP103DYFFR and other TMP103 variants (e.g., TMP103A–TMP103H) - to respond simultaneously to global read/write commands. This eliminates sequential addressing overhead and reduces bus traffic by up to 87% in multi-zone thermal systems.

What is the accuracy specification of the TMP103DYFFR across temperature?

The TMP103DYFFR achieves ±1°C typical accuracy over the –10°C to 100°C range at 1.8 V supply, and ±3°C over the full –40°C to 125°C operating range. Accuracy remains stable across supply voltage variations (±0.2°C/V), ensuring consistent thermal decision-making in battery-powered or dynamically regulated systems.

How does the TMP103DYFFR reduce power consumption in battery-operated devices?

The TMP103DYFFR minimizes power via three mechanisms: 1) 1-μA maximum shutdown current, 2) configurable conversion rates (0.25–8 Hz) to match thermal dynamics, and 3) one-shot mode that performs a single 26-ms measurement and returns to shutdown automatically. At 0.25 Hz, active quiescent current is just 3 μA - enabling multi-year operation on coin cells.

Can the TMP103DYFFR autonomously detect temperature excursions without host intervention?

Yes, the TMP103DYFFR includes programmable THIGH and TLOW registers plus latchable FH and FL flag bits. When temperature exceeds THIGH or falls below TLOW, the corresponding flag is asserted and held until cleared by a host read of the configuration register - enabling interrupt-driven thermal alerts without continuous polling.