REV. F

AD587

High Precision

10 V Reference

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FEATURES

Laser Trimmed to High Accuracy:

10.000 V

5 mV (L and U Grades)

Trimmed Temperature Coefficient:

5 ppm/ C Max (L and U Grades)

Noise Reduction Capability

Low Quiescent Current: 4 mA Max

Output Trim Capability

MIL-STD-883 Compliant Versions Available

FUNCTIONAL BLOCK DIAGRAM

8

2

6

4

5

AD587

A1

NOISE

REDUCTION

TRIM

GND

NOTE

PINS 1, 3, AND 7 ARE INTERNAL TEST POINTS.

NO CONNECTIONS TO THESE POINTS.

GENERAL DESCRIPTION

The AD587 represents a major advance in state-of-the-art

monolithic voltage references. Using a proprietary ion-implanted

buried Zener diode and laser wafer trimming of high stability

thin-film resistors, the AD587 provides outstanding performance

at low cost.

The AD587 offers much higher performance than most other

10 V references. Because the AD587 uses an industry-standard

pinout, many systems can be upgraded instantly with the AD587.

The buried Zener approach to reference design provides lower

noise and drift than band gap voltage references. The AD587

offers a noise reduction pin that can be used to further reduce

the noise level generated by the buried Zener.

The AD587 is recommended for use as a reference for 8-, 10-, 12-,

14-, or 16-bit DACs that require an external precision reference.

The device is also ideal for successive approximation or integrat-

ing ADCs with up to 14 bits of accuracy and, in general, can

offer better performance than the standard on-chip references.

The AD587J, AD587K, and AD587L are specified for operation

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.

PRODUCT HIGHLIGHTS

1. Laser trimming of both initial accuracy and temperature

coefficients results in very low errors over temperature without

the use of external components. The AD587L has a maximum

deviation from 10.000 V of

±8.5 mV between 0°C and 70°C,

and the AD587U guarantees

±14 mV maximum total error

between –55

°C and +125°C.

2. For applications requiring higher precision, an optional fine

trim connection is provided.

3. Any system using an industry-standard pinout 10 V reference

can be upgraded instantly with the AD587.

4. Output noise of the AD587 is very low, typically 4

µV p-p.

A noise reduction pin is provided for additional noise filtering

using an external capacitor.

5. The AD587 is available in versions compliant with

MIL-STD-883. Refer to the Analog Devices Military Products

Databook or the current AD587/883B Data Sheet for detailed

specifications.