ADM803/ADM809/ADM810 are microprocessor supervisory circuits with precision voltage monitoring and low power consumption. They can be used in microprocessor systems, computers, controllers, intelligent instruments, and automotive systems.
The ADM803/ADM809/ADM810 series are microprocessor supervisory circuits that monitor supply voltage and provide a reset output during power‑up, power‑down and brown‑out conditions. The devices are offered in 3‑lead SC70 and SOT‑23 packages and consume very low power, making them suitable for low‑power portable equipment.
The document includes features, applications, functional block diagrams, detailed specifications, absolute maximum ratings, pin configurations, typical performance curves and guidance for interfacing to other devices and microprocessors with multiple interrupts.
| Supply current (typical) | 17 pA |
|---|---|
| Reset assertion voltage | 1 V Vcc |
| Power‑on reset timeout (minimum) | 140 ms |
| Reset voltage threshold (ADM803L typical) | 4.56 V |
| Operating voltage range (VEE) | 1.0 V to 5.5 V |
The devices draw a very low typical supply current of 17 pA.
Reset can be asserted down to 1 V Vcc.
ADM803 provides an open‑drain reset output, while ADM809 and ADM810 provide push‑pull reset outputs.
The power‑on reset is asserted for a minimum of 140 ms (typical 240 ms).