LM236AM-2.5

Overview

The LM236AM-2.5 is a precision integrated reference circuit manufactured by National Semiconductor, now part of Texas Instruments. It provides a stable 2.5V output voltage with an initial accuracy of 0.5% and a typical temperature coefficient of 20 ppm/°C. The device operates within a junction temperature range of -40°C to 85°C and features a maximum operating current of 10 mA. Packaged in an 8-pin SOIC format, it serves as a fixed voltage reference for analog circuits requiring high stability.

Feature Summary

• Provides a precise 2.5V fixed output voltage suitable for calibration and measurement applications
• Features low temperature drift characteristics ensuring stability across varying thermal conditions
• Designed for micropower operation with minimal quiescent current consumption

Applications

• Precision analog-to-digital converter (ADC) reference sources
• Digital-to-analog converter (DAC) voltage references
• Battery-powered instrumentation systems requiring stable bias voltages
• Temperature sensing circuits utilizing reference voltage comparison

Procurement Notes

Verify the manufacturer marking on the component body to confirm National Semiconductor or Texas Instruments origin. Ensure the suffix matches the specified package type and temperature rating. Check for lead-free compliance markings if RoHS standards are required for the assembly process. Confirm pinout alignment with standard SOIC-8 layouts before integration into the design.

Selection Notes

Select this component when a fixed 2.5V reference is required with tighter initial accuracy than standard zener diodes. Consider the SOIC package constraints for PCB space. Evaluate the 10 mA load capability against circuit requirements. Compare temperature coefficients against application sensitivity needs relative to other series variants like the LM336.

Part Context

This component belongs to the LM236 family of two-terminal voltage references. It shares architectural similarities with the LM136 and LM336 series but offers specific performance trade-offs regarding accuracy and temperature stability. The AM variant denotes the commercial temperature range and surface-mount packaging configuration distinct from through-hole options.

Replacement Considerations

LM336AM-2.5/NOPB: Offers similar functionality with potentially different accuracy grades. LM236IM-2.5: Industrial temperature range variant for wider thermal environments. Verify pin compatibility and electrical specifications before substitution.