LM4041B12IDBZR

Overview

The LM4041B12IDBZR is a precision micropower shunt voltage reference manufactured by Texas Instruments. It provides a fixed output voltage of 1.225 V with an initial accuracy of ±0.2%. The device features a maximum temperature coefficient of 100 ppm/°C and operates within a supply voltage range up to 15 V. It supports a maximum shunt current of 12 mA and a minimum operating current of 60 µA. The component is housed in a surface-mount SOT-23-3 package and functions reliably across an industrial temperature range from -40°C to +85°C.

Feature Summary

• Provides high-precision fixed voltage reference with tight initial accuracy tolerance
• Operates stably without requiring external output capacitors for all capacitive loads
• Features low dynamic impedance and low output noise characteristics
• Designed for micropower applications with wide operating current range

Applications

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

Procurement Notes

Verify the specific suffix IDBZR indicates tape and reel packaging configuration. Confirm the B grade designation corresponds to the required 0.2% accuracy and 100 ppm/°C temperature coefficient specifications. Ensure the industrial temperature range meets the operational environment requirements. Check RoHS compliance status against project standards.

Selection Notes

Select this component when a fixed 1.225 V reference with 0.2% precision is required in a compact SOT-23-3 footprint. It is suitable for space-constrained portable designs where low quiescent current and stability without external capacitors are critical. Compare against A or C grades if tighter or looser tolerances are acceptable for cost optimization.

Part Context

This part belongs to the LM4041 series of precision shunt voltage references from Texas Instruments. The series utilizes Zener-zap reverse breakdown voltage trimming during wafer fabrication to achieve specified output tolerances. It serves as a stable reference source for analog-to-digital converters and sensor interfaces in industrial and consumer electronics.

Replacement Considerations

LM4041A12IDBZR offers 0.1% accuracy. LM4041C12IDBZR provides 0.5% accuracy. LM4041D12IDBZR has 1.0% accuracy. All share similar pinouts and functionality.