The document describes a family of precision voltage reference integrated circuits: the MAX676 (+4.096V), MAX677 (+5V), and MAX678 (+10V). These devices utilize an on-chip ROM to calibrate each unit at specific temperatures, achieving temperature drifts of less than 1ppm/°C over a standard operating range.
Key features include excellent line regulation (30ppm/V) and load regulation (3ppm/mA), making them suitable for high-resolution ADCs, DACs, and precision test equipment. The datasheet provides absolute maximum ratings, detailed electrical characteristics tables for various package types, typical operating circuit diagrams, and performance graphs regarding supply current, noise, and power-supply rejection ratio.
| Output Voltage (MAX676) | +4.096V |
|---|---|
| Output Voltage (MAX677) | +5V |
| Output Voltage (MAX678) | +10V |
| Temperature Drift (Standard Range) | < 1ppm/°C |
| Initial Accuracy | 0.02% |
The MAX676 operates from a supply voltage as low as 4.75V.
The devices can handle an output short-circuit current of up to 15mA.
The turn-on settling time is 100 microseconds.