ANALOG DEVICES AD587 Specifications and User Guide

High Precision 10 V Reference

AD587 FEATURES FUNCTIONAL BLOCK DIAGRAM

Laser trimmed to high accuracy NOISE

+VIN REDUCTION

10.000 V ±5 m V (L and U grades) Trimmed temperature coefficient

5 ppm/°C max (L and U grades)

Noise reduction capability A1 VOUT

Low quiescent current: 4 m A max RF Output trim capability

MIL-STD-883-compliant versions available TRIM

AD587

NOTE PINS 1, 3, AND 7 ARE INTERNAL TEST POINTS. NO CONNECTIONS TO THESE POINTS.

Figure 1.

GENERAL DESCRIPTION PRODUCT HIGHLIGHTS

The AD587 represents a major advance in state-of-the-art 1. Laser Trimming of Both Initial Accuracy and Temperature monolithic voltage references. Using a proprietary ion- Coefficients. implanted buried Zener diode and laser wafer trimming of high This laser trimming results in very low errors over stability thin-film resistors, the AD587 provides outstanding temperature without the use of external components. The performance at low cost. AD587L has a maximum deviation from 10.000 V of ±8.5 m V between 0°C and 70°C, and the AD587U guaran-

The AD587 offers much higher performance than most other 10 tees ±14 m V maximum total error between −55°C and V references. Because the AD587 uses an industry-standard +125°C. pinout, many systems can be upgraded instantly with the AD587.

2. Optional Fine Trim Connection. The buried Zener approach to reference design provides lower This connection is designed for applications requiring noise and drift than band gap voltage references. The AD587 higher precision.

offers a noise reduction pin that can be used to further reduce 3. Instant Upgrade of Any System Using an Industry- the noise level generated by the buried Zener. Standard Pinout 10 V Reference.

The AD587 is recommended for use as a reference for 8-bit, 4. Very Low Output Noise. 10-bit, 12-bit, 14-bit, or 16-bit DACs that require an external AD587 output noise is typically 4 µV p-p. A noise precision reference. The device is also ideal for successive reduction pin is provided for additional noise filtering approximation or integrating ADCs with up to 14 bits of using an external capacitor.

accuracy and, in general, can offer better performance than the 5. MIL-STD-883 Compliant Versions Available. standard on-chip references. Refer to the Analog Devices Military Products Databook

or the current AD587/883B Data Sheet for detailed

The AD587J, AD587K, and AD587L are specified for operation

specifications.

from 0°C to 70°C, and the AD587U is specified for −55°C to +125°C operation. All grades are available in 8-lead CERDIP. The J and K versions are also available in an 8-lead SOIC package for surface-mount applications, while the J, K, and L grades also come in an 8-lead PDIP.

Rev. G Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use.

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