Analog Devices Inc. ADM8321 Supervisory Circuit

Analog Devices Inc. ADM8321 Supervisory Circuit monitors power supply voltage levels and code execution integrity in microprocessor-based systems. As well as providing power-on reset signals, an on-chip watchdog timer can reset the microprocessor if it fails to strobe within a preset timeout period. A reset signal can also be asserted by an external push-button switch through a manual reset input.

The ADI ADM8321 Supervisory Circuit features a watchdog input, output stage configuration (open-drain and push-pull). This device comes with a reset threshold of 3.0V, a reset timeout of 1ms (minimum) and a timeout of 1.6sec (typical). It comes in a 5-lead SOT-23 package and typically consumes only 10μA, making it suitable for use in low power, portable applications.


  • Manual reset input
  • Multiple reset output options
  • Low power consumption
  • Specified over wide temperature range (-40°C to +125°C)
  • Qualified for automotive applications
  • 5-lead SOT-23 package


  • Automotive infotainment
  • Microprocessor systems
  • Computers
  • Controllers
  • Intelligent instruments
  • Portable equipment

Typical Application Circuit

Application Circuit Diagram - Analog Devices Inc. ADM8321 Supervisory Circuit
Publicado: 2013-12-16 | Actualizado: 2022-03-11