LM385M-1.2

Overview

The LM385M-1.2 is a micropower voltage reference diode manufactured by National Semiconductor, now part of Texas Instruments. It is housed in an 8-pin SOIC surface-mount package and operates within a commercial temperature range of 0 to 70 degrees Celsius. The device functions as a two-terminal voltage reference with a nominal output voltage of 1.235 V. It is designed for applications requiring stable voltage references with low power consumption.

Feature Summary

• Micropower operation suitable for battery-powered circuits
• Two-terminal bandgap voltage reference design
• Surface-mount SOIC-8 packaging for automated assembly

Applications

• Portable instrumentation
• Battery-powered measurement systems
• Analog circuit biasing

Procurement Notes

Verify the manufacturer designation carefully, as National Semiconductor assets were acquired by Texas Instruments. Confirm that the specific part number matches current production status or obsolescence notices from TI. Ensure the package type and temperature range align with your design requirements before procurement.

Selection Notes

Select this component when a fixed 1.235 V reference is required in a surface-mount format. Consider the operating temperature range and initial accuracy specifications relative to your application's precision needs. Compare against adjustable variants if flexibility in reference voltage is necessary.

Part Context

This component belongs to the LM385 family of micropower voltage references. It shares functional similarities with other members like the LM385Z-1.2 but differs in packaging. The LM385 series is widely used for providing stable reference voltages in analog signal processing and data acquisition systems.

Replacement Considerations

LM385M-1.2/NOPB is documented as an alternate version. LM385M-12 is also listed as a related variant with potential interchangeability depending on specific tolerance requirements.