ADI ADM811LARTZ-REEL7

The ADM811/ADM812 are reliable voltage monitoring devices suitable for use in most voltage monitoring applications. The ADM811/ADM812 are designed to monitor six different voltages, each allowing a 5% or 10% degradation of standard PSU voltages before a reset occurs. These voltages have been selected for the effective monitoring of 2.5V, 3V, 3.3V, and 5V supply voltage levels.

Included in this circuit is a debounced manual reset input. Reset can be activated using an electrical switch (or an input from another digital device) or by a degradation of the supply voltage. The manual reset function is very useful, especially if the circuit in which the ADM811/ADM812 are operating enters into a state that can only be detected by the user. Allowing the user to reset a system manually can reduce the damage or danger that could otherwise be caused by an out-of-control or locked system.

• Superior upgrade for MAX811/MAX812
• Specified over temperature
• Low power consumption: 5μA typical
• Precision voltage monitor: 2.5V, 3V, 3.3V, 5V options
• Reset assertion down to 1Vcc
• Power-on reset: 140ms minimum
• Logic low RESET output (ADM811)
• Logic high RESET output (ADM812)
• Built-in manual reset

• Microprocessor systems
• Controllers
• Intelligent instruments
• Automotive systems
• Safety systems
• Portable instruments