ADR1001AEZ

Overview

The ADR1001AEZ is a fully integrated, ultra-low drift buried Zener precision voltage reference in a 20-terminal hermetic LCC package. It provides a 6.6 V internal reference and a precision 5 V output with ±0.25% accuracy at TJ = 70°C. The device operates on an input voltage range of 9 V to 36 V. Low-frequency noise (0.1 Hz to 10 Hz) is 0.13 ppm p-p for the 5 V output. Quiescent current is typically 2.4 mA. The heater set temperature defaults to 70°C when TSET is floating.

Feature Summary

• Fully integrated signal conditioning circuitry replacing discrete LTZ1000 solutions
• On-chip thermal regulation maintains stable junction temperature
• Pin-programmable thermostat and resistor-programmable heater current limit
• Integrated matched thin-film resistors for negative voltage or gain-of-2 generation

Applications

• Calibration equipment
• Benchtop digital multimeters
• Automated test equipment (ATE)
• Precision data acquisition systems (DAS)

Procurement Notes

Verify the specific AEZ suffix against the manufacturer's ordering guide to confirm package and temperature grade specifications. Confirm that the required RISET and TSET external components are sourced separately as they are not included within the component. Ensure the design accommodates the necessary heater power supply rails and thermal management for the ceramic LCC package.

Selection Notes

Select this component for applications requiring sub-ppm temperature coefficients and single-digit ppm long-term drift. The integrated buffer simplifies designs needing standard voltages like 5 V or 2.5 V directly from the buried Zener core. Consider the 20-terminal LCC package for hermetic sealing requirements without through-hole soldering steps.

Part Context

The ADR1001 serves as a modern, compact successor to the legacy LTZ1000. By consolidating the zener, thermal loop op amps, and buffer onto a single die, it significantly reduces solution area. This integration eliminates the complexity associated with building discrete ovenized circuits while maintaining high-precision performance standards.

Replacement Considerations

ADR1000