ADM803/ADM809/ADM810 are microprocessor supervisory circuits produced by Analog Devices, featuring low power consumption, precision voltage monitoring, and multiple voltage options.
The document describes the ADM803/ADM809/ADM810 family of microprocessor supervisory circuits designed to monitor power supply voltage in microprocessor systems. These devices provide a reset output during power-up, power-down, and brownout conditions to ensure system stability.
Available with seven different reset threshold voltage options (2.5 V to 5 V), the circuits feature built-in glitch immunity and low power consumption of only 17 pA. The ADM803 utilizes an open-drain output, while the ADM809 and ADM810 provide push-pull outputs.
| Supply Current (Typical) | 17 pA |
|---|---|
| Reset Assertion Voltage | Down to 1 V |
| Power-On Reset Time (Min) | 140 ms |
| Reset Threshold Options | 2.5 V, 3 V, 3.3 V, 5 V |
| Package Types | SC70 and SOT-23 |
The ADM803/ADM809/ADM810 consume only 17 pA, making them suitable for low power portable equipment.
The RESET output remains operational with Vcc as low as 1 V.
On power-up, an internal timer holds reset asserted for 240 ms.