LM4041BIDBZR

Overview

The LM4041BIDBZR is a precision shunt voltage reference manufactured by Texas Instruments, featuring a fixed output of 1.225V with an initial accuracy of ±0.2%. It operates within a temperature range of -40°C to +85°C and exhibits a maximum temperature coefficient of 100ppm/°C. The device supports a cathode current range from 60µA to 12mA and delivers low output noise of 20µVRMS (typical). Packaged in a compact SOT-23-3 surface-mount format, it ensures stability across all capacitive loads without requiring external compensation components.

Feature Summary

• Provides stable operation across all capacitive loads without the need for external output capacitors
• Utilizes Zener-zap trimming technology to achieve tight initial accuracy tolerances
• Designed for micropower applications with a minimum operating current as low as 45µA

Applications

• Data acquisition systems
• Power supply monitoring circuits
• Portable battery-powered instrumentation

Procurement Notes

Verify the specific suffix 'IDBZR' confirms the industrial temperature grade (-40°C to +85°C) and SOT-23-3 package configuration. Ensure compatibility with system requirements for 1.225V fixed output and ±0.2% accuracy. Confirm RoHS compliance status matches current manufacturing standards before finalizing procurement orders.

Selection Notes

Select this component when a precise 1.225V reference is required in space-constrained designs. It is suitable for applications demanding low noise and high stability without external filtering. Consider the B-grade accuracy if tighter tolerances than C or D grades are necessary but cost sensitivity exists compared to A-grade options.

Part Context

This part belongs to the LM4041 series of precision micropower shunt voltage references. The series offers multiple accuracy grades (A, B, C, D) and temperature ranges (Industrial, Automotive/Q-Auto, Extended). The LM4041BIDBZR specifically represents the B-grade accuracy variant within the industrial temperature scope, providing a balance of performance and cost-effectiveness for general-purpose precision applications.

Replacement Considerations

Compatible substitutes include other LM4041 variants such as LM4041C12IDBZR or LM4041A12IDBZR, depending on required accuracy levels. Cross-reference with LM4040 series parts only if voltage level differences are acceptable.