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Mingjiada Electronics Supply ADI ADM823, ADM824 And ADM825 Series Supervisory Circuit

In microprocessor and embedded system design, power supply monitoring and reset management are fundamental to ensuring reliable system boot-up and stable operation. ADI’s ADM823/ADM824/ADM825 series of microprocessor monitoring circuits have become a popular choice for many compact electronic systems due to their low power consumption, small package size and flexible reset output options. Mingjiada Electronics supplies this series of monitoring circuit ICs, providing support for design selection and mass production procurement.

Series Overview: Three models, distinguished by their reset output configurations
The [ADI] ADM823/ADM824/ADM825 are all monitoring circuits featuring watchdog and manual reset functions, designed to monitor power supply voltages and code execution integrity within microprocessor systems. The on-chip watchdog timer not only provides a power-on reset signal but can also reset the microprocessor if it fails to generate a enable pulse within a preset timeout period. The reset signal can also be triggered by an external button via the manual reset input. The three devices feature different combinations of watchdog inputs, manual reset inputs and output stage configurations. These devices offer seven reset threshold options, selectable within a range of 2.19 V to 4.63 V. The reset and watchdog timeout periods are fixed at 140 ms (minimum) and 1.6 seconds (typical), respectively.

Key Features at a Glance:
ADM823: Push-pull output, active-low reset;
ADM824: Open-drain output, active-low reset, facilitating integration with different logic levels or line-level logic;
ADM825: Push-pull output, active-high reset, suitable for processors or peripherals requiring an active-high reset signal.

Key Features – Integrated monitoring, watchdog and manual reset
Precision power supply monitor from 2.5 V to 5 V
Seven reset threshold options: 2.19 V to 4.63 V
Reset timeout: 140 ms (minimum)
Manual reset input (ADM823, ADM825)
Push-pull output stage
RESET (ADM823)
RESET, RESET (ADM824/ADM825)
Watchdog timer timeout: 1.6 seconds (ADM823, ADM824)
Low power consumption (5 μA)

Mingjiada Electronics supplies the [ADI] ADM823/ADM824/ADM825 series of monitoring circuit ICs, including but not limited to the following:
ADM823LYKSZ
ADM823LYRJZ
ADM823MYRJZ
ADM823RYRJZ
ADM823SYKSZ
ADM823SYRJZ
ADM823TYKSZ
ADM823TYRJZ
ADM823YYKSZ
ADM823ZYKSZ
ADM824LYRJZ
ADM824RYKSZ
ADM824SYKSZ
ADM824SYRJZ
ADM825LYRJZ
ADM825RYRJZ
ADM825SYKSZ
ADM825SYRJZ
ADM825TYKSZ
ADM825TYRJZ
ADM825ZYKSZ

Typical Applications
The ADM823/ADM824/ADM825 series are suitable for a wide range of embedded systems requiring reliable reset management and power monitoring, including: power supply monitoring for microcontrollers and digital signal processors in industrial control modules; low-power reset management for portable instruments and battery-powered devices; board-level monitoring in communications and networking equipment; processor reset circuits in consumer electronics and office equipment; and long-term unattended devices requiring a watchdog fallback.

For further information on the ADI ADM823/ADM824/ADM825 monitoring circuits or to enquire about sample prices, please visit the Mingjiada Electronics website (https://www.integrated-ic.com/) for further supply details.