AD236AN

Overview

The AD236AN is a precision band-gap voltage reference diode manufactured by Analog Devices. It provides a stable 2.5V output with low dynamic impedance and tight initial tolerance. The device operates over an extended temperature range of -40°C to +85°C, ensuring reliable performance in industrial environments. Designed for applications requiring high accuracy, it features on-chip trimming to minimize temperature drift and allows for external adjustment of the reference voltage.

Feature Summary

• Precision band-gap architecture for stable voltage regulation
• Low dynamic impedance ensures minimal noise impact
• Extended industrial temperature rating for harsh environments
• On-chip trimming for tight initial tolerance and stability

Applications

• High-precision digital voltmeters
• Power supply regulation circuits
• Operational amplifier biasing networks
• Current loop measurement systems

Procurement Notes

Verify the manufacturer designation carefully, as the AD236 series has historical roots in National Semiconductor before acquisition by Analog Devices. Confirm the specific suffix indicates the correct package type and temperature grade. Ensure compatibility with existing board layouts when substituting legacy components from previous design generations.

Selection Notes

Select this component when a stable 2.5V reference is required for 5V logic systems. Consider the operating current range and thermal stability requirements relative to the application. Evaluate the need for external trimming capabilities if tighter than standard tolerances are necessary for the specific circuit design constraints.

Part Context

This part belongs to the broader family of precision voltage references used in signal conditioning and data conversion interfaces. It serves as a foundational component for establishing accurate reference potentials in mixed-signal systems, supporting both analog and digital sections of electronic designs.

Replacement Considerations

Direct replacements may include other 2.5V band-gap references from manufacturers such as Maxim Integrated or Texas Instruments. Verify pinout compatibility and electrical specifications before substitution. Legacy equivalents from National Semiconductor should be cross-referenced for functional parity.