Texas Instruments LM20XEVM

Overview

LM20XEVM from Texas Instruments is an evaluation module designed to accelerate development and validation of analog temperature sensing solutions using the LM20x family of precision silicon temperature sensors - specifically LM20BIM7 (SC-70), LM20CIM7 (SC-70), and LM20SITL (DSBGA). It provides independent access to each sensor's analog voltage output across a −55°C to +130°C range with ±1.5°C accuracy, enabling rapid characterization in thermal management, industrial monitoring, and embedded system prototyping.

For engineers reviewing the LM20XEVM datasheet, LM20XEVM setup, LM20XEVM application, or LM20XEVM equivalent, this board supports hands-on verification of sensor linearity, supply rejection, thermal response time, and multi-sensor calibration workflows - all without custom PCB design or firmware integration.

Technical Context

The LM20XEVM integrates three discrete LM20x analog temperature sensors on a single PCB: U1 (LM20BIM7, SC-70, 5-pin), U2 (LM20CIM7, SC-70, 5-pin), and U3 (LM20SITL, DSBGA, 4-pin). Each sensor delivers a ratiometric analog voltage output proportional to absolute temperature (6.25 mV/°C) with 2.4 V nominal output at 0°C and 10 µA quiescent current.

Power is supplied via a single 2.4–5.5 V input (J1.P5), shared across all sensors, while ground is common (J1.P4). Output terminals J1.P1–P3 provide direct access to individual sensor outputs for oscilloscope or multimeter measurement, supporting real-time thermal profiling without signal conditioning.

Key Specifications

Availability

LM20XEVM is available at Aetrix Electronics and suitable for thermal validation, sensor selection, and embedded firmware integration requiring stable component supply and TI-validated reference hardware.

Supply support for LM20XEVM 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 headquartered in Dallas, Texas, specializing in analog, embedded processing, and high-reliability silicon solutions for industrial, automotive, and communications markets.

The LM20xEVM belongs to TI's precision analog evaluation platform family, engineered to reduce time-to-test for temperature-sensing ICs by providing pre-layout, pre-tested sensor configurations with documented layout practices and bill-of-materials traceability.

FAQ

What is the primary function of the LM20XEVM?

The LM20XEVM is a Texas Instruments evaluation module that enables rapid functional testing and performance benchmarking of three LM20x analog temperature sensors - LM20BIM7, LM20CIM7, and LM20SITL - on a single PCB. It provides direct access to each sensor's analog output voltage, allowing engineers to validate thermal linearity, supply rejection, and response behavior without custom hardware. The LM20XEVM does not include firmware or digital interfaces; it serves strictly as a passive test platform for analog sensor characterization.

Which specific LM20x sensors are mounted on the LM20XEVM?

The LM20XEVM integrates exactly three LM20x sensors: U1 is the LM20BIM7 in SC-70 (5-pin), U2 is the LM20CIM7 in SC-70 (5-pin), and U3 is the LM20SITL in DSBGA (4-pin). These represent distinct package and specification variants within the LM20x family, and all are populated and tested on the board per TI's SNVU210 User's Guide. No other temperature sensors or ICs are included on the LM20XEVM.

How is power delivered to the LM20XEVM and how are outputs accessed?

Power is applied via J1.P5 (V+) and J1.P4 (GND) - a single 2.4–5.5 V supply powers all three LM20x sensors simultaneously. Sensor outputs are accessed individually through J1.P1 (LM20BIM7), J1.P2 (LM20CIM7), and J1.P3 (LM20SITL), each delivering a ratiometric analog voltage proportional to die temperature. No onboard regulators, buffers, or ADCs are present - the LM20XEVM provides raw sensor signals only.

Can the LM20XEVM be used in production systems?

No - the LM20XEVM is explicitly designated by Texas Instruments as a research-and-development tool for feasibility evaluation and experimentation only. Per TI's Standard Terms and Conditions for Evaluation Modules, it is not qualified for use in finished products, safety-critical applications, or production environments. The LM20XEVM lacks production-grade certifications, long-term reliability validation, and environmental hardening required for deployment. Its purpose is strictly limited to lab-based sensor assessment prior to final schematic and layout implementation.

Does the LM20XEVM include documentation and schematic files?

Yes - the LM20XEVM ships with TI's official User's Guide (SNVU210, February 2013), which includes full board layout diagrams (top/bottom assembly layers), a complete schematic, bill of materials (BOM) with manufacturer part numbers and package codes, and step-by-step setup instructions. All documentation is publicly available from TI's website and confirms the exact placement, routing, and decoupling practices used on the LM20XEVM - enabling direct replication of proven analog sensor interface design.