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ADR1000
RECOMMENDED FOR NEW DESIGNSOven-Compensated, Buried Zener, 6.62 V Voltage Reference
- Part Models
- 1
- 1ku List Price
- Starting From $57.93
Overview
- High long-term stability
- 0.5 ppm/year long-term drift, typical (after first 3000 hours)
- Low Zener reference noise: 0.14 ppm p-p (0.9 μV p-p)
- Low temperature coefficient: <0.2 ppm/°C
- On-chip heater and temperature sensor
- Specified for −40°C to +125°C operation
- Pin‐compatible upgrade to LTZ1000
The ADR1000 is a 6.62 V, output highly stable, oven-controlled, buried Zener reference component built on an Analog Devices, Inc., proprietary bipolar process and is a pin-compatible replacement for the LTZ1000. Included on the chip is a buried Zener reference, a heater resistor for temperature stabilization, and a temperature sensing transistor. External circuitry is used to set the operating currents and the temperature of the reference, allowing the maximum flexibility to achieve maximum long-term stability and minimum noise.
The ADR1000 application circuit can achieve a temperature coefficient of <0.2 ppm/°C and a long-term drift of 0.5 ppm per year (typical) after the first 3000 hours when properly implemented with the recommended external circuitry shown in Figure 9 in the data sheet and with the recommended layout.
The low long-term drift of the ADR1000 is well suited for any application that must maintain accuracy over long calibration intervals or product lifetime. The low thermal drift ensures the output is constant with temperature variation because the on‑chip heater of the ADR1000 maintains a constant temperature higher than the expected ambient range.
The ADR1000 is specified for operation over the extended industrial temperature range of −40°C to +125°C. To obtain the optimal thermal drift performance, the temperature set point of the heater needs to be 10°C higher than the maximum ambient temperature to provide optimum stability of the buried Zener reference.
The ADR1000 comes packaged in an industry-standard, 8-pin TO-99 metal can package that is hermetically sealed to resist the effects of humidity.
APPLICATIONS
- High accuracy instrumentation
- Multimeters
- Weigh scales
- Electric balance
- Automatic test equipment
- Metrology equipment
- Standard cells
- Calibrators
Documentation
Data Sheet 1
User Guide 1
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| ADR1000AHZ | 8-Pin TO-99 |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Jul 16, 2025 - 25_0091 Qualification of Wafer Fabrication Site Analog Devices, Inc. Camas WA for (Bipolar) Products |
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| ADR1000AHZ | PRODUCTION | |
|
Dec 12, 2023 - 23_0197 Die Attach Adheshive Paste Raw Material Change |
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| ADR1000AHZ | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
Tools & Simulations
LTspice 1
Models for the following parts are available in LTspice:
- ADR1000
LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.
Evaluation Kits
Evaluation Board for the ADR1000 Ultra Stable Heated Buried Zener Voltage Reference in 8 Pin TO-99