LM4040BIM3-2.5

Overview

The LM4040BIM3-2.5 is a micropower shunt voltage reference manufactured by Analog Devices Inc./Maxim Integrated. It provides a fixed output voltage of 2.5 V with an initial accuracy of 0.2%. The device operates within a temperature range of -40°C to +85°C and features a temperature coefficient of 100 PPM/°C. It supports a maximum shunt current of 15 mA and a minimum operating current of 60 µA. The component is housed in a SOT-23-3 surface-mount package.

Feature Summary

• Provides stable precision voltage reference performance in a compact surface-mount form factor
• Designed for low-power applications through ultra-low operating current consumption
• Maintains high accuracy across the specified industrial temperature range

Applications

• Portable instrumentation systems requiring precise voltage standards
• Battery-powered measurement devices where power efficiency is critical
• Data acquisition systems utilizing analog-to-digital conversion

Procurement Notes

Verify manufacturer attribution carefully, as this specific part number appears under both Analog Devices/Maxim Integrated and Texas Instruments listings. Confirm RoHS compliance status directly with the supplier, as documentation varies between sources. Check current availability status, as some distributors indicate limited supply or discontinuation for similar variants in this series.

Selection Notes

Select this component when a 2.5 V reference with 0.2% initial accuracy is required in a SOT-23-3 package. Ensure the application operates within the -40°C to +85°C temperature range. Verify that the circuit design accommodates the 100 PPM/°C temperature coefficient and the minimum 60 µA operating current requirement for stable regulation.

Part Context

This component belongs to the LM4040 family of precision micropower shunt voltage references. The 'B' suffix denotes a 0.2% initial accuracy grade, while 'IM3' indicates the SOT-23-3 surface-mount package. The '-2.5' specifies the fixed 2.5 V output voltage. This family offers various accuracy grades and output voltages to suit different precision requirements.

Replacement Considerations

LM4040AIM3-2.5/NOPB (Texas Instruments) offers 0.1% accuracy but may have different thermal characteristics. LM4040CIM3-2.5/NOPB provides 0.5% accuracy at potentially lower cost. Verify pinout compatibility and ensure substitute parts meet the specific 0.2% accuracy and 100 PPM/°C temperature coefficient requirements.