The AD586 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 AD586 provides outstanding performance at low cost. The AD586 offers much higher performance than most other 5 V references. Because the AD586 uses an industr y-standard pinout, many systems can be upgraded instantly with the AD586.