ADM803/ADM809/ADM810 are microprocessor supervisory circuits produced by Analog Devices. They are characterized by low power consumption, high precision, and multiple voltage range options.
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. An internal timer holds the reset asserted for 240 ms on power‑up, ensuring the processor starts only after the supply has stabilized. The devices operate from VCC as low as 1 V and are available in 3‑lead SC70 and SOT‑23 packages.
The document includes detailed specifications, absolute maximum ratings, pin configurations, typical performance curves, interfacing guidelines, mechanical dimensions and an ordering guide for the various threshold‑voltage options and package variants.
| Operating voltage range (VCC) | 1.0 V – 5.5 V |
|---|---|
| Supply current (typical) | 35 µA |
| Reset voltage threshold (ADM803L) | 4.63 V |
| Reset active timeout period | 240 ms |
The internal timer holds the reset asserted for 240 ms on power‑up.
The reset output remains operational down to VCC = 1 V.
The devices consume as little as 17 µA, providing low‑power operation.
The ADM803 is available in a 3‑lead SC70 package.