AD587JRZ-REEL

Voltage Reference Overview

The AD587JRZ-REEL is a high precision monolithic voltage reference providing a nominal 10.000 V output. It utilizes an ion-implanted buried Zener diode and laser-trimmed thin-film resistors to achieve low noise and drift. The device operates within a temperature range of 0°C to 70°C with a maximum initial accuracy of 10 mV and a temperature coefficient of 20 ppm/°C. It features a dedicated noise reduction pin, optional fine trim capability, and requires a maximum quiescent current of 4 mA.

Voltage Reference Feature Summary

• Laser trimmed for high initial accuracy and low temperature coefficient without external components
• Buried Zener architecture provides lower noise and drift compared to band gap references
• Dedicated noise reduction pin allows further filtering using an external capacitor
• Optional fine trim connection enables precise calibration of the output voltage

Voltage Reference Applications

• Reference source for 8-bit, 10-bit, 12-bit, 14-bit, or 16-bit DACs
• Precision reference for successive approximation or integrating ADCs
• Multiplying CMOS DAC applications paired with operational amplifiers
• Precision current source configurations

Voltage Reference Procurement Notes

Verify the specific grade suffix (J, K, or U) to confirm the required temperature range and accuracy specifications. Ensure the package option matches the design requirements, as the JRZ variant indicates surface mount SOIC packaging. Confirm RoHS compliance status if environmental regulations apply to the manufacturing process. Cross-reference the ordering guide to ensure the reel quantity and tape specifications align with assembly equipment capabilities.

Voltage Reference Selection Notes

Select this component when system requirements demand superior noise performance and stability compared to standard on-chip references. The J grade offers a cost-effective solution for commercial temperature ranges, while the U grade supports extended industrial environments. Consider the available fine trim pin if the application requires output voltage adjustment beyond the factory laser trimming limits. Evaluate the need for the noise reduction pin based on the sensitivity of the connected analog-to-digital converter.

Voltage Reference Part Context

The AD587 series represents a significant advancement in monolithic voltage reference technology by employing a proprietary buried Zener diode. This design methodology yields significantly lower noise and thermal drift than conventional band gap references. The device maintains an industry-standard pinout, facilitating direct upgrades in existing systems that previously utilized older 10 V reference architectures.

Voltage Reference Replacement Considerations

AD587JRZ

Voltage Reference FAQ

How does the AD587 reduce output noise?

The device includes a dedicated Noise Reduction pin that can be connected to ground via an external capacitor. This configuration forms a low-pass filter with internal resistances to attenuate high-frequency noise generated by the buried Zener diode.

What is the purpose of the TRIM pin?

The TRIM pin provides an optional fine-tuning capability for the output voltage. It allows users to offset the output by up to 300 mV to match a main system reference or accommodate binary application requirements such as 10.24 V.