ADR5043ARTZ-REEL7

Overview

The ADR5043ARTZ-REEL7 is a precision shunt voltage reference manufactured by Analog Devices Inc., featuring a nominal output voltage of 3.0 V. It operates within an extended temperature range from -40°C to +125°C and utilizes an SOT-23-3 surface-mount package. The device provides an initial accuracy of ±0.2% and maintains a maximum temperature coefficient of 100 ppm/°C. Electrical characteristics include a minimum operating current of 50 µA and a maximum shunt current of 15 mA, with a dynamic output impedance of 0.2 Ω.

Feature Summary

• Ultracompact packaging in SOT-23 form factor for space-critical applications
• Pin-compatible design with LM4040/LM4050 series references
• Stable operation without requiring external compensation capacitors
• Wide operating current range supporting low-power handheld devices

Applications

• Portable, battery-powered equipment
• Automotive systems
• Data acquisition systems
• Instrumentation and process control
• Energy management

Procurement Notes

Verify the specific grade suffix (A or B) against project requirements, as the 'ARTZ' designation corresponds to Grade A specifications including ±0.2% accuracy and 100 ppm/°C temperature coefficient. Confirm that the SOT-23-3 package orientation matches the PCB footprint, noting that Pin 3 should be connected to V+ for proper functionality. Ensure the supply voltage and bias resistor calculations accommodate the 50 µA to 15 mA operating current window across the full -40°C to +125°C temperature range.

Selection Notes

Select this component when a fixed 3.0 V reference is required in a compact SOT-23-3 package. Choose the Grade A variant for applications tolerating ±0.2% initial accuracy and 100 ppm/°C drift. Consider stacking multiple units if higher voltages are needed, keeping in mind that accuracy errors and temperature coefficients accumulate. Verify that the load current remains within the specified 50 µA to 15 mA range to ensure stability and prevent thermal issues.

Part Context

This part belongs to the ADR504x family of micropower shunt voltage references designed for high-precision data acquisition. The family includes variants with outputs ranging from 2.048 V to 5.0 V. The ARTZ suffix indicates the SOT-23-3 package option, while the 'A' denotes Grade A performance metrics. These references utilize band gap technology to achieve low temperature drift and fast settling times suitable for portable electronics.

Replacement Considerations

LM4040DIM3-2.0

FAQ

Is an external capacitor required for stability?

No, the ADR5043ARTZ-REEL7 is designed to operate stably without an external capacitor between the positive and negative terminals, though it remains stable with any capacitive load.

What is the recommended connection for Pin 3?

It is recommended that Pin 3 be connected to V+ (the positive supply terminal).