Texas Instruments TMP103EYFFR

Overview

TMP103EYFFR from Texas Instruments is a low-power, digital temperature sensor 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 - used for thermal monitoring in space-constrained SSDs and mobile handsets.

For engineers reviewing the TMP103EYFFR datasheet, TMP103EYFFR pinout, TMP103EYFFR application, or TMP103EYFFR equivalent, this page delivers verified technical context, real-world timing behavior, MDA-enabled multi-device bus operation, and design-meaningful specifications for thermal management in battery-powered and high-density embedded systems.

Technical Context

The TMP103EYFFR implements a monolithic diode-based temperature sensing element with on-chip 10-bit ADC and digital logic, supporting three functional modes: shutdown (≤1 μA), one-shot (26 ms conversion, auto-return), and continuous conversion (0.25/1/4/8 Hz via CR1/CR0 bits). Its serial interface includes integrated Schmitt triggers and spike suppression on SDA/SCL.

It supports Multiple Device Access (MDA) commands enabling global read/write to up to eight devices on one bus - each assigned a unique 7-bit slave address (TMP103E = 1110100), eliminating per-device addressing overhead and reducing host communication latency in multi-zone thermal systems.

Key Specifications

Pinout & Package

Package: 4-ball DSBGA (YFF), 0.76 mm × 0.76 mm, 0.35 mm pitch, bottom-side solderable.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TMP103EYFFR, TMP102DBVR trades MDA and ultra-low IQ for easier layout in non-dense designs, while STTS751DT offers finer resolution but sacrifices bus efficiency and latch-mode reliability in safety-critical thermal shutdown paths.

Availability

TMP103EYFFR is available at Aetrix Electronics and suitable for SSD thermal management, mobile handset battery monitoring, notebook CPU proximity sensing, telecom baseband unit ambient monitoring, and industrial edge-node thermal profiling requiring stable component supply across extended product lifecycles.

Supply support for TMP103EYFFR 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, embedded processing, and connectivity technologies, with leadership in precision sensing and low-power signal chain solutions.

The TMP103 product line was designed for ultra-compact, multi-zone thermal monitoring in battery-powered and space-constrained electronics - delivering calibrated digital temperature data with minimal power and board area overhead.

FAQ

What is the exact slave address for TMP103EYFFR on the I²C bus?

The TMP103EYFFR uses a fixed 7-bit slave address of 1110100 (0x74 in hexadecimal), corresponding to its "E" variant designation per TI's TMP103 family addressing scheme. This address is hardwired and cannot be changed. The full 8-bit address byte sent by the master includes this 7-bit value plus the R/W bit (0 for write, 1 for read), resulting in 0xE8 for write and 0xE9 for read operations. No external address pins or configuration registers affect this value.

Does TMP103EYFFR support SMBus Alert Response Address (ARA) functionality?

No, TMP103EYFFR does not support SMBus Alert Response Address (ARA) functionality. It implements standard I²C/SMBus slave protocol with START/STOP, ACK/NACK, and register-based read/write - but lacks dedicated ALERT pin or ARA handling logic. Thermal event notification relies solely on software-polling of the FH/FL flag bits in the configuration register or host-initiated MDA broadcast queries. This is consistent across all TMP103 variants including TMP103EYFFR.

Can TMP103EYFFR operate reliably at 1.4 V supply with full specification compliance?

Yes, TMP103EYFFR is fully specified and tested down to 1.4 V supply voltage per TI's SBOS545D datasheet Section 6.3. At 1.4 V, it maintains ±1°C typical accuracy over –10°C to 100°C, 1°C resolution, and supports all conversion rates (0.25–8 Hz). Quiescent current remains ≤3 μA in active mode and ≤1 μA in shutdown. All timing parameters, including t(LOW), t(HIGH), and tR/tF, meet spec at 1.4 V when SCL frequency ≤400 kHz - making it suitable for single-cell LiFePO₄ or alkaline-powered systems.

How does the Multiple Device Access (MDA) feature work specifically for TMP103EYFFR?

TMP103EYFFR supports MDA through dedicated command codes (0x0C for MDA Write, 0x0D for MDA Read) that target all compatible TMP103 devices on the bus simultaneously - regardless of individual slave address. When the host sends an MDA Write, all TMP103EYFFR units (and other TMP103 variants) on the bus accept the same register update. During MDA Read, each device returns its local temperature register value in sequence, enabling synchronized multi-zone acquisition in one transaction. This eliminates per-device address overhead and reduces bus arbitration latency by up to 8× in 8-sensor configurations.

Is the TMP103EYFFR package RoHS-compliant and lead-free?

Yes, the TMP103EYFFR (YFF package) is RoHS-compliant and lead-free, meeting JEDEC J-STD-020 moisture sensitivity level 1 (MSL-1) and TI's Green Standard (no brominated flame retardants, antimony trioxide, or heavy metals above threshold limits). The 0.76 mm × 0.76 mm DSBGA package uses SnAgCu (SAC305) solder bumps and halogen-free molding compound. Full compliance documentation, including IPC-1752-certified declarations, is available through TI's Quality & Environmental portal for TMP103EYFFR.