ADR4540DEZ

Overview

The ADR4540DEZ is a high-precision, low-power voltage reference from Analog Devices featuring an output voltage of 4.096 V and a maximum initial error of ±0.02%. It operates within an input voltage range of 3 V to 15 V and provides a maximum quiescent current of 950 μA. The device offers a temperature coefficient of 0.8 ppm/°C (D grade) over the 0°C to +70°C range. It supports ±10 mA source/sink currents with a dropout voltage of 300 mV at 2 mA load. The component utilizes an innovative core topology for excellent stability and low noise.

Feature Summary

• Features an innovative core topology designed to achieve high accuracy while maintaining industry-leading temperature stability and low noise performance.
• Provides low thermally induced output voltage hysteresis and minimal long-term drift to improve system accuracy over time and temperature variations.
• Supports both sourcing and sinking output currents up to 10 mA with a low dropout voltage suitable for portable equipment applications.

Applications

• Precision data acquisition systems
• High resolution data converters
• High precision measurement devices
• Industrial instrumentation
• Medical devices

Procurement Notes

Verify the specific D-grade designation and package type against official documentation before procurement. Confirm that the operating environment aligns with the specified 0°C to +70°C temperature range. Ensure proper ESD precautions are taken during handling as the device is sensitive to electrostatic discharge. Cross-reference the ordering suffix to confirm availability in the required packaging format.

Selection Notes

Select this component when a stable 4.096 V reference is required with tight initial accuracy and low temperature drift. Consider the D-grade specification if operation is limited to the commercial temperature range. Evaluate the low quiescent current and dropout characteristics for battery-powered or space-constrained designs requiring precise analog signal conditioning.

Part Context

The ADR4540DEZ belongs to the ADR45xx series of ultralow noise, high accuracy voltage references manufactured by Analog Devices. This family includes various output voltages and grades, utilizing advanced core topologies for superior thermal stability. The DEZ suffix typically indicates a specific package configuration within the product line, distinct from other variants like the ARZ or BRZ.

Replacement Considerations

ADR4540ARZ-R7

FAQ

What is the maximum initial output voltage error for the ADR4540DEZ?

The maximum initial output voltage error for the ADR4540DEZ is ±0.02%.

Does the ADR4540DEZ support both sourcing and sinking currents?

Yes, the device supports a maximum output current of +10 mA source and −10 mA sink.