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 integrating 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.
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