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Texas Instruments LM95071CIMFX
- Part No.:
- LM95071CIMFX
- Manufacturer:
- Texas Instruments
- Category:
- Analog and Digital Output
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LM95071CIMFX.pdf
- Description:
- SENSOR DIGITAL -40C-150C SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,023
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Product details
Overview
LM95071CIMFX 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 from −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 LM95071CIMFX datasheet, LM95071CIMFX pinout, LM95071CIMFX application, or LM95071CIMFX equivalent, this page provides verified technical context, real-world design meaning of key specs, validated pin functions, confirmed alternatives, and supply-ready availability details for thermal management in portable electronics, disk drives, and industrial control systems.
Technical Context
The LM95071CIMFX integrates a ΔΣ ADC and on-die temperature sensing element, supporting SPI and MICROWIRE protocols via a 3-wire serial interface (CS, SC, SI/O). Its two's-complement 14-bit output format encodes temperature with LSB = 0.03125°C, enabling precise directional change detection without calibration.
It operates across 2.4 V to 5.5 V supply voltage and supports two functional modes: continuous conversion (default at power-up) and shutdown (6 µA typical), both accessible via write-only configuration register commands (00h or FFh). The SI/O pin functions bidirectionally with Schmitt-trigger input and TRI-STATE output capability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 2.4 V to 5.5 V - compatible with common 3.3 V and 5 V logic rails; requires 0.1 µF ceramic bypass at VDD. |
| Temperature Range | −40°C to +150°C - suitable for under-hood automotive, industrial motor drives, and high-temp PCB hotspots. |
| Accuracy | ±1°C (0°C to 70°C), ±2°C (−40°C to +150°C) - enables reliable thermal throttling without system-level calibration. |
| Resolution | 0.03125°C per LSB - detects sub-degree changes critical for fan speed ramping and oscillator compensation. |
| Operating Current | 280 µA typical - allows battery-powered operation for >1 year in periodic-read thermal logging applications. |
| Shutdown Current | 6 µA typical - reduces quiescent load during idle intervals in always-on thermal supervision circuits. |
| Conversion Time | 228 ms max - defines minimum interval between valid reads; impacts polling frequency in closed-loop thermal control. |
Pinout & Package
LM95071CIMFX is housed in a 5-pin SOT-23 (DBV) package measuring 2.90 mm × 1.60 mm, optimized for space-constrained PCB layouts in portable and embedded systems.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - CS | Chip Select input | Active-low enable signal; must be held high ≥160 ns between transactions to avoid bus contention. |
| 2 - GND | Power and signal ground | Reference return path for analog sensor core and digital I/O; requires low-impedance connection to PCB ground plane. |
| 3 - SI/O | Serial Input/Output | Bidirectional data line with Schmitt-trigger input and TRI-STATE output; transmits temperature data on falling SC edge. |
| 4 - SC | Serial clock input | Master-generated clock (max 6.25 MHz); rising edge clocks data in, falling edge clocks data out. |
| 5 - VDD | Positive supply | DC power input; must be decoupled with 0.1 µF ceramic capacitor placed adjacent to pin. |
Key Features
| Feature | Design Value |
|---|---|
| SPI/MICROWIRE compatibility | Interoperates with MSP432P4 and other TI microcontrollers without protocol translation or glue logic. |
| 13-bit-plus-sign resolution | Delivers 14-bit two's complement output (0.03125°C/LSB), enabling fine-grained thermal trend analysis. |
| Factory-trimmed accuracy | Eliminates need for end-of-line calibration in consumer and industrial thermal monitoring applications. |
| Shutdown mode control | Reduces average system current by >97% when sampling interval exceeds 1 s, extending battery life. |
| Manufacturer ID register | Provides hardware-level device authentication (0x800F) to prevent counterfeit integration in secure designs. |
Applications
| Server CPU Thermal Monitoring | Disk Drive Spindle Control |
|---|---|
Use Scenario: Real-time junction temperature tracking of multi-core processors during peak compute loads. IC Role / Device Role / Timing Role: Primary temperature sensor feeding thermal management firmware; updates every 228 ms. Use Value: Enables dynamic frequency scaling before thermal throttling occurs, preserving performance within safe limits. | Use Scenario: Closed-loop temperature compensation for spindle motor drive stability in HDDs. IC Role / Device Role / Timing Role: Analog front-end replacement for thermistor networks; provides digital output directly to motor controller MCU. Use Value: Eliminates analog calibration drift and improves long-term repeatability of RPM regulation. |
| Industrial PLC I/O Module | Portable Medical Diagnostic Device |
Use Scenario: Ambient and component temperature supervision inside DIN-rail mounted programmable logic controllers. IC Role / Device Role / Timing Role: Standalone thermal watchdog interfaced via SPI to ARM Cortex-M host; operates continuously at 3.3 V. Use Value: Supports extended operating range (−40°C to +150°C) required for uncooled industrial enclosures. | Use Scenario: Battery-pack and sensor-module temperature validation in handheld ultrasound or glucose meters. IC Role / Device Role / Timing Role: Low-power thermal safety monitor with shutdown mode activated between measurements. Use Value: Achieves >1-year battery life using 6 µA shutdown current while maintaining ±2°C accuracy over full medical ambient range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar temperature sensor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX31820MUA+ | 1-Wire interface (single-pin), 12-bit resolution (0.0625°C), ±0.5°C accuracy (−10°C to +85°C) | Requires no dedicated SPI lines; better suited for ultra-low-pin-count microcontrollers | Select when board routing constraints prohibit adding CS/SC/SI/O signals and accuracy requirements are relaxed. |
| ADT7410TRZ-REEL7 | I²C interface, 16-bit resolution (0.0078°C), ±0.25°C accuracy (−20°C to +85°C), 200 µA operating current | Higher precision but narrower temp range and incompatible bus protocol | Choose for lab-grade instrumentation where sub-degree accuracy outweighs extended industrial range needs. |
Compared with MAX31820MUA+ and ADT7410TRZ-REEL7, the LM95071CIMFX offers the widest operational temperature span (−40°C to +150°C) and lowest power shutdown mode (6 µA), making it optimal for ruggedized embedded systems where bus compatibility with existing SPI hosts and thermal survivability are primary selection criteria.
Availability
LM95071CIMFX is available at Aetrix Electronics and suitable for server thermal management, industrial PLC modules, disk drive spindle control, and portable medical diagnostics requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LM95071CIMFX 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.
The LM95071CIMFX belongs to TI's precision analog temperature sensor product line, engineered for high-resolution, low-power thermal monitoring in space-constrained and thermally demanding environments such as computing, storage, and industrial automation.
FAQ
What is the absolute maximum supply voltage for LM95071CIMFX?
The absolute maximum supply voltage for LM95071CIMFX is 6 V. Exceeding this rating may cause permanent damage. The recommended operating range is 2.4 V to 5.5 V, and TI specifies that operation outside this window compromises accuracy and reliability. Always use a 0.1 µF ceramic capacitor between VDD and GND to ensure stable operation of LM95071CIMFX under transient load conditions.
Does LM95071CIMFX support I²C communication?
No, LM95071CIMFX does not support I²C. It implements a 3-wire SPI/MICROWIRE-compatible interface (CS, SC, SI/O) only. Attempting I²C protocol will result in communication failure. For I²C-based thermal sensing, consider TI's TMP117 or Analog Devices' ADT7410 instead. LM95071CIMFX is designed for direct interoperability with SPI-capable MCUs like the MSP432P4 series.
How do I read the Manufacturer ID from LM95071CIMFX?
To read the Manufacturer ID from LM95071CIMFX, first issue a shutdown command (write 0xFF) while holding CS low, then perform a 16-bit read - the device returns 0x800F (1000 0000 0000 1111 in binary). This value is fixed and confirms TI origin. The LM95071CIMFX outputs this code exclusively in shutdown mode; no other register access yields the ID. Verify timing per Figure 12 in the datasheet to avoid bus errors during LM95071CIMFX ID retrieval.
What is the minimum time between consecutive temperature reads for LM95071CIMFX?
The minimum time between consecutive valid temperature reads for LM95071CIMFX is 228 ms - the maximum conversion time across its full −40°C to +150°C range. Reading earlier yields stale or erroneous data. After power-on reset, allow ≥228 ms before the first read. LM95071CIMFX does not support asynchronous or interrupt-driven completion notification; polling interval must strictly observe this timing constraint to ensure measurement integrity.
Is LM95071CIMFX RoHS compliant?
Yes, LM95071CIMFX/NOPB.A is RoHS compliant, with Sn (tin) lead finish and MSL Level-1 rating (260°C peak reflow). The "NOPB" suffix denotes lead-free packaging. Non-NOPB variants (e.g., LM95071CIMFX) are not RoHS compliant. Always verify the full orderable part number - LM95071CIMFX/NOPB.A - to ensure compliance for new designs and manufacturing releases involving LM95071CIMFX.
LM95071CIMFX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Not For New Designs
- Sensor Type:
- Digital, Local
- Sensing Temperature - Local:
- -40°C ~ 150°C
- Sensing Temperature - Remote:
- -
- Output Type:
- SPI
- Voltage - Supply:
- 2.4V ~ 5.5V
- Resolution:
- 13 b
- Features:
- Shutdown Mode
- Accuracy - Highest (Lowest):
- ±1°C (±2°C)
- Test Condition:
- 0°C ~ 70°C (-40°C ~ 150°C)
- Operating Temperature:
- -40°C ~ 150°C
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- SOT-23-5
LM95071CIMFX FAQ
1.How can I place an order for LM95071CIMFX through Aetrix?
Please submit a Request for Quotation (RFQ) for LM95071CIMFX on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for LM95071CIMFX reliable?
The price and inventory of LM95071CIMFX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM95071CIMFX is usually 5 days.
3.What payment methods are accepted for LM95071CIMFX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM95071CIMFX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM95071CIMFX?
LM95071CIMFX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM95071CIMFX order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for LM95071CIMFX?
For technical support, including LM95071CIMFX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM95071CIMFX requirements.
6.How does Aetrix verify that LM95071CIMFX is sourced from the original manufacturer or authorized distributors?
All LM95071CIMFX products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that LM95071CIMFX meets industry standards.
7.What is the process for return or replacement of LM95071CIMFX?
All LM95071CIMFX units undergo pre-shipment inspection (PSI). If there is an issue with LM95071CIMFX, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The LM95071CIMFX part is unused and in its original packaging.
Return procedure for LM95071CIMFX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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