Description

The ADM809ZAKSZ-REEL7 is an electronic component model categorized as a supervisor. It is part of the ADM803/ADM809/ADM810 supervisory circuits that monitor the power supply voltage in microprocessor systems. These circuits provide a reset output during power-up, power-down, and brownout conditions. On power-up, an internal timer holds the reset signal asserted for 240 ms, keeping the microprocessor in a reset state until conditions stabilize. The reset output remains operational even with VCC as low as 1 V. The ADM803 and ADM809 have an active low reset signal (RESET), while the ADM810 has an active high signal (RESET) output. The ADM809 and ADM810 have push-pull outputs, while the ADM803 has an open-drain output that requires an external pull-up resistor.

Specifications and features

• Specified over temperature
• Low power consumption: 17 μA
• Precision voltage monitor: 2.5 V, 3 V, 3.3 V, 5 V options
• Reset assertion down to 1 V VCC
• 140 ms minimum power-on reset
• Open-drain RESET output (ADM803)
• Push-pull RESET output (ADM809)
• Push-pull RESET output (ADM810)
• SC70 and SOT-23 packages

Application Scenarios

• Microprocessor systems
• Computers
• Controllers
• Intelligent instruments

Comparison

- Monitors power supply voltage in microprocessor systems

- Provides reset output during power-up, power-down, and brownout conditions

- Can operate with VCC as low as 1 V

- Options for precision voltage monitor

- Different output types available (open-drain and push-pull)

- Comes in SC70 and SOT-23 packages

- Requires an external pull-up resistor for the open-drain output (ADM803)