ADM812SARTZ-REEL

微处理器监控电路采用4引脚SOT -143与DSP Microprocessor Supervisory Circuit in 4-Lead SOT-143 with DSP

Product Details

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 2.5 V, 3 V, 3.3 V, and 5 V 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.

Applications

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Microprocessor systems

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Controllers

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Intelligent instruments

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Automotive systems

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Safety systems

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Portable instruments

### Features and Benefits

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Superior upgrade for MAX811/MAX812

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Specified over temperature

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Low power consumption: 5 μA typical

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Precision voltage monitor: 2.5 V, 3 V, 3.3 V, 5 V options

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Reset assertion down to 1 VCC

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Power-on reset: 140 ms minimum

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Logic high RESET output

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Built-in manual reset