LM385BZ-2.5G

Overview

The LM385BZ-2.5G is a micropower voltage reference diode manufactured by onsemi, featuring a nominal output voltage of 2.5 V with an initial accuracy of ±0.8%. It operates within a wide current range from 20 µA to 20 mA and exhibits low dynamic impedance of approximately 1 Ω at 25°C. The device utilizes a bipolar bandgap design for stable performance across temperatures, packaged in an 8-pin SOIC (PDSO8) plastic surface-mount configuration.

Feature Summary

• Provides precise 2.5 V reference voltage with tight initial tolerance
• Operates efficiently over a wide dynamic current range
• Features low dynamic impedance for improved regulation
• Designed for long-term stability and low noise

Applications

• Portable instrumentation circuits
• Battery-powered analog systems
• Precision data acquisition references
• Current loop transmitter biasing

Procurement Notes

Verify the specific suffix 'G' indicates RoHS compliance status as per manufacturer documentation. Confirm package marking codes match the SOIC-8 physical dimensions. Ensure ordering information aligns with the exact voltage tolerance class required for the application design specifications.

Selection Notes

Select this component when high precision is required alongside low power consumption. The ±0.8% accuracy suits applications demanding tighter tolerances than standard versions. Verify thermal management requirements for the SOIC-8 package under maximum load conditions to ensure reliable operation within specified temperature limits.

Part Context

This part belongs to the LM385 family of micropower voltage references, widely used in analog signal conditioning. The 'B' designation typically denotes higher accuracy grades compared to standard variants. The 'Z' suffix identifies the surface-mount SOIC-8 package type, distinguishing it from through-hole TO-92 alternatives within the same product line.

Replacement Considerations

Compatible substitutes include LM385BZ-2.5/NOPB from Texas Instruments and LM385BZ-2.5 from Analog Devices. Verify pinout compatibility and thermal characteristics before substitution to ensure circuit integrity without modification.