Analog Devices Inc. ADM1818-10AKS-RL7

Overview

ADM1818-10AKS-RL7 from Analog Devices is a microprocessor reset circuit with open-drain output and internal 5.5 kΩ pull-up resistor, designed for monitoring 3.3 V power supplies. It features a 2.88 V (typical) reset threshold, 150 ms reset timeout, −40°C to +105°C operating temperature range, and SC70-3 package. Used in embedded controllers to ensure safe system initialization after power-on.

For engineers reviewing the ADM1818-10AKS-RL7 datasheet, ADM1818-10AKS-RL7 pinout, ADM1818-10AKS-RL7 application, or ADM1818-10AKS-RL7 equivalent, this page delivers verified specifications, functional context, pin-level design meaning, real-world use cases, and validated alternative options for industrial-grade voltage monitoring.

Technical Context

The ADM1818-10AKS-RL7 implements a precision voltage comparator with hysteresis and built-in 150 ms power-up delay timer. Its internal reference ensures stable trip point accuracy across temperature, and the open-drain RST output with integrated pull-up eliminates external components in most microcontroller reset interfaces.

This device supports manual reset via push-button connection between RST and GND, triggering a guaranteed 150 ms low pulse upon button release. It operates from 1.2 V to 5.5 V supply and draws only 4–10 µA quiescent current at 3.6 V, enabling use in battery-sensitive applications.

Key Specifications

Pinout & Package

ADM1818-10AKS-RL7 is housed in a 3-lead SC70 (KS-3) package - 2.0 mm × 1.25 mm × 0.9 mm, JEDEC-compliant, surface-mountable with coplanarity ≤0.10 mm.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADM1816-10AKSZ-RL7, ADM1818-10AKS-RL7 offers identical performance but non-RoHS packaging and M8E marking; versus TPS3808G18DBVR, it provides fixed 2.88 V detection, guaranteed 150 ms timing, and push-button capability-making it superior for cost-sensitive, space-constrained 3.3 V system supervision.

Availability

ADM1818-10AKS-RL7 is available at Aetrix Electronics and suitable for industrial PLC controllers, automotive body control modules, and medical infusion pumps requiring stable component supply with full traceability and extended temperature support.

Supply support for ADM1818-10AKS-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 engineered specifically for reliable, low-cost microprocessor reset supervision in space- and power-constrained embedded systems, emphasizing precision threshold accuracy, guaranteed timing, and minimal external component count.

FAQ

What is the exact reset threshold voltage of the ADM1818-10AKS-RL7?

The ADM1818-10AKS-RL7 has a nominal reset threshold of 2.88 V (typical), with a guaranteed range of 2.80 V to 2.97 V across −40°C to +105°C. This value is specified in Table 1 of the Rev. F datasheet and is optimized for monitoring 3.3 V power rails with appropriate undervoltage margin. The ADM1818-10AKS-RL7 uses a trimmed bandgap reference to maintain stability over temperature and supply variation.

Does the ADM1818-10AKS-RL7 require an external pull-up resistor on the RST pin?

No, the ADM1818-10AKS-RL7 includes an internal 5.5 kΩ pull-up resistor (3.1–7.5 kΩ range) connected to VCC on the RST pin, as confirmed in Table 1 and the "ADM1813 AND ADM1818" section of the datasheet. This eliminates the need for external components in standard CMOS reset interfaces, simplifying layout and reducing BOM cost. The ADM1818-10AKS-RL7 is designed for direct connection to microcontroller reset inputs.

Can the ADM1818-10AKS-RL7 be used with a manual push-button reset?

Yes, the ADM1818-10AKS-RL7 explicitly supports manual reset via a push-button switch connected between the RST pin and GND, as detailed in Figure 11 and the "ADM1813 AND ADM1818" section. Pressing the button pulls RST low; upon release, the device asserts a clean 150 ms (typical) active-low reset pulse. This functionality is intrinsic to the ADM1818-10AKS-RL7 and requires no additional circuitry.

What package type and dimensions does the ADM1818-10AKS-RL7 use?

The ADM1818-10AKS-RL7 uses the SC70-3 (KS-3) package: 2.00 mm × 1.25 mm × 0.90 mm body size, with 0.65 mm lead pitch and coplanarity ≤0.10 mm, per Figure 16 and the Ordering Guide. This JEDEC-compliant, RoHS-compatible (non-Z suffix) package enables high-density routing and automated assembly. The ADM1818-10AKS-RL7 is not offered in SOT-23 for this specific variant.

What is the supply current consumption of the ADM1818-10AKS-RL7 at 3.6 V?

At VCC = 3.6 V and TA = −40°C to +105°C, the ADM1818-10AKS-RL7 draws 4 µA (minimum), 10 µA (maximum), and 7 µA (typical) quiescent current, as specified in Table 1 under "Current" row. This ultra-low power draw enables continuous supervision in battery-backed or energy-harvesting systems without impacting standby lifetime. The ADM1818-10AKS-RL7 maintains this efficiency across its full operating temperature range.