Analog Devices Inc. ADM1811-10AKSZ-RL

Overview

ADM1811-10AKSZ-RL from Analog Devices is a precision 4.35 V open-drain microprocessor reset circuit with internal 5.5 kΩ pull-up resistor, 150 ms reset timeout, and −40°C to +105°C operating range-designed for reliable power-on initialization in 5 V microcontroller systems.

For engineers reviewing the ADM1811-10AKSZ-RL datasheet, ADM1811-10AKSZ-RL pinout, ADM1811-10AKSZ-RL application, or ADM1811-10AKSZ-RL equivalent, this device delivers deterministic reset timing, low quiescent current (≤10 µA at 3.6 V), and SC70-3 packaging for space-constrained embedded control designs.

Technical Context

The ADM1811-10AKSZ-RL integrates a precision voltage comparator with hysteresis, temperature-stable bandgap reference, and a 150 ms monostable delay circuit to ensure safe system startup after power supply stabilization. Its open-drain output with integrated 5.5 kΩ pull-up eliminates external components for standard logic-level reset assertion.

This variant belongs to the ADM181x family's open-drain, active-low configuration group (ADM1811/ADM1813/ADM1816/ADM1818) and is specifically calibrated to a nominal 4.35 V trip point (4.25 V min, 4.49 V max), targeting 5 V supply monitoring in industrial and automotive applications.

Key Specifications

Pinout & Package

ADM1811-10AKSZ-RL is housed in a 3-lead SC70 package (JEDEC KS-3), with 0.65 mm lead pitch and coplanarity ≤0.10 mm. The package supports reflow soldering per JEDEC J-STD-020 and is RoHS compliant (Z suffix).

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX809SEUR+T and TPS3808G12DBVR, the ADM1811-10AKSZ-RL provides tighter trip tolerance (±2.2% vs ±2.5%), integrated pull-up for zero-component reset interface, and smaller SC70 footprint-making it optimal for new designs prioritizing miniaturization and production consistency.

Availability

ADM1811-10AKSZ-RL is available at Aetrix Electronics and suitable for industrial automation, automotive electronics, and medical handheld devices requiring stable component supply with full RoHS compliance and extended temperature qualification.

Supply support for ADM1811-10AKSZ-RL 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 since 1965.

The ADM181x series was engineered specifically for robust, low-cost power-supply monitoring in microprocessor-based systems-emphasizing accuracy, thermal stability, and minimal external component count across harsh operating environments.

FAQ

What is the exact reset threshold voltage of the ADM1811-10AKSZ-RL?

The ADM1811-10AKSZ-RL has a nominal reset threshold of 4.35 V, with a guaranteed range of 4.25 V (minimum) to 4.49 V (maximum) across −40°C to +105°C. This value is factory-trimmed and specified in Table 1 of the Rev. F datasheet, making ADM1811-10AKSZ-RL suitable for precise 5 V supply supervision where margin against ripple and aging is critical.

Does the ADM1811-10AKSZ-RL require an external pull-up resistor?

No, the ADM1811-10AKSZ-RL includes an internal 5.5 kΩ pull-up resistor on its open-drain RST output, eliminating the need for external components. This feature is explicitly documented in the "INTERNAL PULL-UP RESISTOR" section of the datasheet and applies only to ADM1811/ADM1816 variants-confirming ADM1811-10AKSZ-RL's self-contained reset interface capability.

What is the reset timeout duration of the ADM1811-10AKSZ-RL, and is it adjustable?

The ADM1811-10AKSZ-RL provides a fixed 150 ms reset timeout (100–250 ms guaranteed), which begins when VCC rises above the threshold and ends when the RST output is released. This delay is implemented via an internal monostable circuit and is not user-adjustable-ensuring consistent, repeatable power-on sequencing without external timing components.

Can the ADM1811-10AKSZ-RL operate with supply voltages below 5 V?

Yes, the ADM1811-10AKSZ-RL operates from 1.2 V to 5.5 V, enabling functionality during brownout conditions. While its 4.35 V threshold targets 5 V rails, the device remains powered and asserts reset correctly even as VCC drops to 1.2 V-verified in the Absolute Maximum Ratings and Supply Voltage specifications of the Rev. F datasheet for ADM1811-10AKSZ-RL.

Is the ADM1811-10AKSZ-RL pin-compatible with other ADM181x variants in SC70-3?

Yes, all ADM181x devices in the KS-3 (SC70-3) package-including ADM1811-10AKSZ-RL-share identical pinout (RST/VCC/GND), mechanical dimensions, and solder profile. This allows direct substitution within the same package family for different thresholds (e.g., ADM1811-5AKSZ-RL) without PCB redesign, provided system-level electrical compatibility is confirmed.