Analog Devices Inc. ADM1811-10AKS-RL7

Overview

ADM1811-10AKS-RL7 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, used for reliable power-on initialization in 5 V supply monitoring applications.

For engineers reviewing the ADM1811-10AKS-RL7 datasheet, ADM1811-10AKS-RL7 pinout, ADM1811-10AKS-RL7 application, or ADM1811-10AKS-RL7 equivalent, this page delivers verified specifications, package mapping, functional context, and real-world design guidance for embedded system power sequencing and fault-safe startup.

Technical Context

The ADM1811-10AKS-RL7 implements a voltage comparator with hysteresis and a fixed 150 ms power-up delay timer to prevent premature release of reset during supply ramp-up. Its open-drain output with integrated 5.5 kΩ pull-up enables flexible logic-level interfacing without external components.

It operates across 1.2 V to 5.5 V supply range while consuming only 4–10 µA quiescent current, and features ±1.5% typical trip point accuracy at 4.35 V (min 4.25 V, max 4.49 V), ensuring robust immunity to supply transients in industrial and automotive environments.

Key Specifications

Pinout & Package

ADM1811-10AKS-RL7 is housed in a 3-lead SC70 (KS-3) package with gull-wing leads, 0.65 mm pitch, and JEDEC-compliant outline per Figure 16. Pin 1 = VCC, Pin 2 = GND, Pin 3 = RST (active-low open-drain).

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX809SEUR+T and TPS3808G12DBVR, the ADM1811-10AKS-RL7 offers tighter trip accuracy (±1.5%), integrated pull-up for direct 3.3 V logic compatibility, and smallest SC70-3 footprint-making it optimal for cost-sensitive, space-constrained 5 V monitoring where fixed 150 ms timing suffices.

Availability

ADM1811-10AKS-RL7 is available at Aetrix Electronics and suitable for industrial automation, automotive body electronics, and medical device applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for ADM1811-10AKS-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 since 1965.

The ADM181x series was designed specifically for reliable, low-cost microprocessor reset generation in space- and power-constrained embedded systems, emphasizing precision thresholding, predictable timing, and minimal external component count.

FAQ

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

The ADM1811-10AKS-RL7 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 specified in Table 1 of the Rev. F datasheet and applies exclusively to the -10 variant, distinguishing it from the -5 (4.62 V) version. The ADM1811-10AKS-RL7 uses this threshold to monitor 5 V supplies with sufficient margin against ripple and dropout.

Does the ADM1811-10AKS-RL7 require an external pull-up resistor?

No, the ADM1811-10AKS-RL7 includes an internal 5.5 kΩ pull-up resistor on its open-drain RST output, as confirmed in Table 1 ("INTERNAL PULL-UP RESISTOR") and General Description. This eliminates the need for an external resistor when interfacing with standard 3.3 V or 5 V microcontroller reset inputs. The ADM1811-10AKS-RL7's internal pull-up ensures correct logic-high state during reset deassertion without additional components.

What is the reset timeout duration of the ADM1811-10AKS-RL7?

The ADM1811-10AKS-RL7 provides a fixed reset timeout of 150 ms typical, with a guaranteed range of 100 ms to 250 ms, as documented in Table 1 under "RESET ACTIVE TIME" and "Falling"/"Rising" timing entries. This timeout begins when VCC rises above the threshold and ensures the reset signal remains asserted long enough for power supply stabilization and safe microprocessor initialization. The ADM1811-10AKS-RL7 does not support adjustable delay.

Which package type is used by the ADM1811-10AKS-RL7?

The ADM1811-10AKS-RL7 uses the SC70-3 (KS-3) package, a 3-lead thin shrink small outline transistor package measuring 2.20 mm × 1.35 mm × 0.95 mm, per Figure 16 and Ordering Guide. The "AKS" suffix in the part number explicitly denotes KS-3 (SC70), distinct from "ART" (SOT-23). This compact footprint supports high-density PCB layouts where board space is constrained, and the ADM1811-10AKS-RL7 is RoHS-compliant (Z-grade).

Can the ADM1811-10AKS-RL7 be used to monitor 3.3 V supplies?

No, the ADM1811-10AKS-RL7 is specifically configured for 5 V supply monitoring with a 4.35 V threshold; using it on a 3.3 V rail would cause continuous reset assertion since VCC never exceeds the trip point. For 3.3 V monitoring, Analog Devices specifies the ADM1816-10AKSZ-RL7 (2.88 V threshold) or ADM1815-10ARTZ-RL7. The ADM1811-10AKS-RL7's electrical specification, application examples, and ordering guide all confirm its 5 V target use case.