Analog Devices Inc. ADM1811-10ART-RL7

Overview

ADM1811-10ART-RL7 from Analog Devices is a microprocessor reset circuit with open-drain output, 4.35 V typical reset threshold, 150 ms reset timeout, and SOT-23-3 package. It monitors 5 V power supplies in embedded controllers and industrial microprocessor systems to ensure safe power-up initialization.

For engineers reviewing the ADM1811-10ART-RL7 datasheet, ADM1811-10ART-RL7 pinout, ADM1811-10ART-RL7 application, or ADM1811-10ART-RL7 equivalent, key selection criteria include reset threshold tolerance (±1.5% over temperature), low quiescent current (10 μA at 3.6 V), open-drain compatibility with I²C-bus logic levels, and guaranteed operation from −40°C to +105°C.

Technical Context

The ADM1811-10ART-RL7 integrates a precision voltage reference, comparator, and 150 ms internal timer to generate a reliable reset pulse when VCC falls below 4.35 V (typ) or during power-up. Its open-drain RST output requires an external pull-up resistor and supports wired-OR configurations.

It operates across 1.2 V to 5.5 V supply range with <16 μA max supply current and features ±1.5% trip-point accuracy over full temperature range. No manual reset input is supported - this variant lacks push-button functionality, distinguishing it from ADM1813/ADM1818 series.

Key Specifications

Pinout & Package

ADM1811-10ART-RL7 is housed in a 3-lead SOT-23 (RT-3) package per JEDEC TO-236AB, with 1.3 mm × 2.9 mm footprint and 0.95 mm pitch.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar voltage monitor applications.

Compared with MAX809SEUR+T and TPS3808G15DBVR, ADM1811-10ART-RL7 offers fixed 4.35 V threshold optimized for 5 V systems, open-drain output for shared reset lines, and tighter temperature drift - making it preferred for industrial multi-MCU boards requiring coordinated reset assertion.

Availability

ADM1811-10ART-RL7 is available at Aetrix Electronics and suitable for industrial PLC controllers, automotive body control modules, and medical handheld diagnostics requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for ADM1811-10ART-RL7 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.

The ADM181x family is designed specifically for cost-sensitive, space-constrained microprocessor reset supervision - delivering precision voltage monitoring and guaranteed reset timing in ultra-small packages for embedded systems.

FAQ

What is the exact reset threshold voltage of ADM1811-10ART-RL7?

The ADM1811-10ART-RL7 has a nominal reset threshold of 4.35 V (typical), with guaranteed limits of 4.25 V (min) and 4.49 V (max) across −40°C to +105°C. This value is factory-trimmed and specified in Table 1 of the Rev. D datasheet, making ADM1811-10ART-RL7 suitable for monitoring standard 5 V supplies where 4.35 V represents the lower boundary of acceptable regulation.

Does ADM1811-10ART-RL7 support manual reset via push-button?

No, ADM1811-10ART-RL7 does not support manual reset. Only ADM1813 and ADM1818 variants include internal circuitry for push-button reset detection and debouncing. The ADM1811-10ART-RL7 is a dedicated voltage monitor with open-drain output and no external reset input capability - its RST pin functions solely as an output.

What package type and dimensions does ADM1811-10ART-RL7 use?

ADM1811-10ART-RL7 uses the RT-3 (SOT-23) package per JEDEC TO-236AB standard: 2.90 mm × 1.30 mm × 1.00 mm body size, 0.95 mm lead pitch, and gull-wing leads. Pin 1 is marked by a dot; pinout is RST (pin 1), VCC (pin 2), GND (pin 3) - confirmed in Figure 2 and Table 3 of the Rev. D datasheet.

Can ADM1811-10ART-RL7 be used with 3.3 V microcontrollers?

Yes, ADM1811-10ART-RL7 can interface with 3.3 V MCUs because its open-drain RST output is compatible with any logic family requiring active-low reset. An external pull-up resistor to 3.3 V ensures the released state is 3.3 V logic high. The device itself operates from 1.2 V to 5.5 V, so it can monitor 5 V rails while driving 3.3 V logic - a common configuration verified in Figure 14 of the datasheet.

What is the maximum sink current capability of the RST output in ADM1811-10ART-RL7?

The RST output of ADM1811-10ART-RL7 can sink up to 8 mA when asserted (low), tested at VCC ≥ 2.7 V and VOUT = 0.4 V. This allows direct connection to most microcontroller reset inputs without additional buffering, and supports pull-up resistors as low as 470 Ω for fast rise times - a value confirmed in the "OUTPUT CURRENT" section of Table 1 (Rev. D datasheet).