Texas Instruments LM95071CIMF/NOPB

Overview

LM95071CIMF/NOPB from Texas Instruments is a 13-bit-plus-sign SPI/MICROWIRE digital temperature sensor in a 5-pin SOT-23 package, delivering ±1°C accuracy from 0°C to 70°C and ±2°C across −40°C to +150°C, with 0.03125°C resolution and 280 µA typical operating current. It serves as a system-level thermal monitor in embedded host interfaces requiring low-power, high-resolution temperature feedback.

For engineers reviewing the LM95071CIMF/NOPB datasheet, LM95071CIMF/NOPB pinout, LM95071CIMF/NOPB application, or LM95071CIMF/NOPB equivalent, key selection criteria include its 2.4 V–5.5 V supply range, shutdown mode (6 µA), 228 ms max conversion time, SPI/MICROWIRE compatibility, and SOT-23 footprint for space-constrained thermal sensing.

Technical Context

The LM95071CIMF/NOPB integrates a ΔΣ ADC with two's complement 14-bit output encoding (LSB = 0.03125°C), enabling direct temperature interpretation without host-side scaling. Its three-wire serial interface operates with chip-select framing, data clocked out on SC falling edge and in on rising edge, supporting both SPI and MICROWIRE timing conventions.

It features dual functional modes: continuous conversion (default at power-up) and shutdown (entered via 0xFF write), with the latter preserving bus activity to allow Manufacturer/Device ID readback (0x800F). Internal registers include read-only temperature and ID registers plus a write-only configuration register controlling mode selection.

Key Specifications

Pinout & Package

LM95071CIMF/NOPB uses a 5-pin SOT-23 (DBV) package measuring 2.90 mm × 1.60 mm, optimized for PCB area-constrained thermal monitoring nodes. Bypass capacitor (0.1 µF ceramic) required between VDD and GND per layout guidelines.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX31855KASA+ and ADT7410TRZ-REEL7, LM95071CIMF/NOPB uniquely balances wide temperature range, SPI compatibility, ultra-small SOT-23 footprint, and low-power shutdown-making it optimal for embedded MCU-based thermal management where board space and interface simplicity are critical.

Availability

LM95071CIMF/NOPB is available at Aetrix Electronics and suitable for server thermal management, industrial motor control, medical device safety monitoring, and portable electronics requiring stable component supply across long production lifecycles.

Supply support for LM95071CIMF/NOPB 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 microcontroller ecosystems.

LM95071CIMF/NOPB belongs to TI's precision analog temperature sensor product line, engineered for direct integration into thermal feedback loops of resource-constrained embedded systems where size, power, and interface simplicity are design priorities.

FAQ

What is the absolute maximum supply voltage for LM95071CIMF/NOPB?

The absolute maximum supply voltage for LM95071CIMF/NOPB is 6 V. Exceeding this rating may cause permanent damage. The recommended operating range remains 2.4 V to 5.5 V, and operation outside this window risks degraded accuracy or undefined behavior. Always observe the 0.1 µF VDD-to-GND bypass capacitor requirement to ensure stable internal reference performance across the full valid supply range.

Does LM95071CIMF/NOPB support I²C communication?

No, LM95071CIMF/NOPB does not support I²C. It implements a three-wire SPI/MICROWIRE-compatible serial interface with dedicated CS, SC, and bidirectional SI/O pins. I²C functionality is absent-no SDA/SCL pins exist, and no I²C address or ACK protocol is defined. For I²C-based designs, consider alternatives like the ADT7410TRZ-REEL7, but note differences in accuracy range and package size versus LM95071CIMF/NOPB.

How do I read the Manufacturer ID from LM95071CIMF/NOPB?

To read the Manufacturer ID from LM95071CIMF/NOPB, first issue a shutdown command (write 0xFF) while holding CS low, then perform a 16-bit read-this returns the fixed value 0x800F. The ID is only accessible in shutdown mode and appears as the default output on SI/O. Confirm proper timing: allow ≥228 ms after power-up before first read, and ensure SC edges meet specified setup/hold requirements per the datasheet's timing diagrams for reliable ID capture.

What is the meaning of "13-bit plus sign" resolution in LM95071CIMF/NOPB?

"13-bit plus sign" refers to a 14-bit two's complement output format used by LM95071CIMF/NOPB, where bit 13 is the sign bit and bits 12–0 represent magnitude, yielding 0.03125°C per LSB. This structure enables signed temperature values from −40°C to +150°C with consistent resolution across the full range. The output code 0x0003 corresponds to 0°C, and 0xFFFF represents −0.03125°C-directly interpretable by host firmware without scaling math.

Can LM95071CIMF/NOPB be used in automotive applications?

LM95071CIMF/NOPB is not qualified for automotive use. While it operates across −40°C to +150°C, it lacks AEC-Q200 qualification and automotive-specific reliability testing. For automotive applications, TI offers the LM95071-Q1 variant (SNIS207), which includes enhanced ESD robustness, extended qualification, and automotive-grade traceability. Using LM95071CIMF/NOPB in safety-critical vehicle systems violates OEM compliance requirements and voids warranty coverage.