Analog Devices Inc. ADM1813-5ARTZ-RL7

Overview

ADM1813-5ARTZ-RL7 from Analog Devices is a 3-pin SOT-23 open-drain microprocessor reset circuit with internal 5.5 kΩ pull-up resistor, 4.62 V typical reset threshold, 150 ms reset timeout, and push-button reset capability. It monitors 5 V power supplies in embedded controllers and industrial microprocessor systems requiring reliable power-on initialization.

For engineers reviewing the ADM1813-5ARTZ-RL7 datasheet, ADM1813-5ARTZ-RL7 pinout, ADM1813-5ARTZ-RL7 application, or ADM1813-5ARTZ-RL7 equivalent, key selection criteria include reset threshold tolerance (±0.13 V), operating temperature range (−40°C to +105°C), supply current (9–16 µA), open-drain output sink capability (8 mA), and manual reset timing (1 µs detect, 150 ms assertion).

Technical Context

The ADM1813-5ARTZ-RL7 implements a precision voltage comparator with built-in hysteresis and a fixed 150 ms power-up delay timer. Its internal reference ensures stable trip point accuracy across temperature (±0.5% typical drift from −40°C to +105°C).

It features an open-drain RST output with integrated 5.5 kΩ pull-up resistor-eliminating external components-and supports both automatic reset on VCC undervoltage and manual reset via external push-button connected between RST and GND.

Key Specifications

Pinout & Package

ADM1813-5ARTZ-RL7 is housed in a RoHS-compliant 3-lead SOT-23 (RT-3) package, 2.90 mm × 1.30 mm × 1.02 mm, with gull-wing leads and JEDEC TO-236-AB compliance.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX809TRD3T-T and TPS3808G01DBVR, the ADM1813-5ARTZ-RL7 delivers lower quiescent current, integrated pull-up for reduced BOM, and native push-button reset-making it optimal for space-constrained, cost-sensitive 5 V microprocessor supervision where minimal external components are critical.

Availability

ADM1813-5ARTZ-RL7 is available at Aetrix Electronics and suitable for industrial PLC controllers, automotive body control modules, medical diagnostic instruments, and smart energy meters requiring stable component supply and long-term lifecycle support.

Supply support for ADM1813-5ARTZ-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 series was designed specifically for cost-sensitive, space-constrained microprocessor reset applications requiring guaranteed power-on reset timing, manual reset capability, and robust operation across extended temperature ranges.

FAQ

What is the exact reset threshold voltage of the ADM1813-5ARTZ-RL7?

The ADM1813-5ARTZ-RL7 has a specified reset threshold of 4.62 V typical, with a guaranteed range of 4.50 V (min) to 4.75 V (max) across −40°C to +105°C. This precise trip point ensures reliable supervision of nominal 5 V power rails without false triggering during normal regulation tolerance.

Does the ADM1813-5ARTZ-RL7 require an external pull-up resistor on the RST pin?

No. The ADM1813-5ARTZ-RL7 integrates a 5.5 kΩ pull-up resistor internally, enabling direct connection to microcontroller reset inputs without external components. This simplifies design, reduces BOM count, and improves layout reliability compared to open-drain supervisors requiring discrete pull-ups.

Can the ADM1813-5ARTZ-RL7 be used with a manual push-button reset?

Yes. The ADM1813-5ARTZ-RL7 explicitly supports manual reset: connecting a push-button between RST and GND pulls the output low, and upon release, the device asserts reset for 150 ms typical. This feature is documented in the datasheet's "ADM1813 AND ADM1818" section and timing diagram Figure 12.

What package type and dimensions does the ADM1813-5ARTZ-RL7 use?

The ADM1813-5ARTZ-RL7 uses the 3-lead SOT-23 (RT-3) package per JEDEC TO-236-AB, measuring 2.90 mm × 1.30 mm × 1.02 mm. Pin 1 is RST, Pin 2 is VCC, and Pin 3 is GND-confirmed in Figure 2 and Table 3 of the Rev. F datasheet.

What is the maximum sink current capability of the ADM1813-5ARTZ-RL7 RST output?

The ADM1813-5ARTZ-RL7 RST output can sink up to 8 mA when asserted (low), tested at VCC ≥ 2.7 V and VOUT = 0.4 V. This allows direct interfacing with standard CMOS microcontroller reset inputs without additional buffering or level-shifting circuitry.