Key facts
- Brand
- Analog Devices
- Model
- ADM811/ADM812
- Category
- component datasheet
- Industry
- Electronics
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- 4
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- EN
- Last added
- 2026-09-29
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Analog Devices ADM811/ADM812 Microprocessor Supervisory Circuit Data Sheet
The ADM811/ADM812 are low‑power voltage supervisory devices that monitor 2.5 V, 3 V, 3.3 V and 5 V supplies. They provide a reset output that stays active for a typical 240 ms after power‑up and include a debounced manual‑reset input.
The device is offered in multiple suffix versions (L, M, T, S, R, Z) with different reset‑threshold voltages and is supplied in a 4‑lead SOT‑143 package. Electrical specifications, pin functions and ordering information are detailed in the following sections.
Analog Devices ADM811/ADM812 specifications
| Supply Voltage Range | 1.0 V – 5.5 V |
|---|---|
| Typical Supply Current | 8 µA (min) – 15 µA (typ) |
| Reset Voltage Threshold (ADM811L/ADM812L) | Typical 4.63 V |
| Reset Threshold Temperature Coefficient | 30 ppm/°C |
| VCC‑to‑RESET Delay | 40 µs |
| Reset Active Timeout Period | Typical 140 ms |
| Manual Reset Minimum Pulse Width | 10 µs |
| Glitch Immunity | 100 ns |
Source: Analog Devices ADM811/ADM812 Microprocessor Supervisory Circuit Data Sheet
All Analog Devices ADM811/ADM812 documents by type
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
What is the supply voltage range for the ADM811/ADM812?
The devices operate from 1.0 V up to 5.5 V.
From: Analog Devices ADM811/ADM812 Microprocessor Supervisory Circuit Data Sheet
How long does the reset output stay active after power‑up?
The internal timer holds the reset output active for a typical 240 ms after power‑up.
From: Analog Devices ADM811/ADM812 Microprocessor Supervisory Circuit Data Sheet
What does the manual reset input do?
The manual reset (MR) pin is an active‑low debounced input that ignores pulses shorter than 100 ns and accepts pulses longer than 10 µs, allowing a user to reset the circuit manually.
What are the reset output logic levels for ADM811 and ADM812?
ADM811 provides an active‑low reset output, while ADM812 provides an active‑high reset output.
What is the typical supply voltage range for the ADM811/ADM812?
The devices operate from 1.0 V up to 5.5 V supply voltage.
How long does the reset output stay active after power‑up?
The reset output remains active for about 140 ms (ADM811) or 240 ms (ADM812) after Vcc rises above the threshold.