Analog Devices Inc. ADM6315-26D4ARTRL7

Overview

ADM6315-26D4ARTRL7 from Analog Devices is a precision open-drain microprocessor supervisory circuit designed to monitor 2.63 V supply rails with ±3.5% threshold accuracy over −40°C to +125°C, assert reset for ≥1120 ms after power-up or brownout, and support manual reset via debounced MR input. It operates down to VCC > 1 V and consumes only 5 μA typical supply current.

For engineers reviewing the ADM6315-26D4ARTRL7 datasheet, ADM6315-26D4ARTRL7 pinout, ADM6315-26D4ARTRL7 application, or ADM6315-26D4ARTRL7 equivalent, this device delivers deterministic reset timing, high noise immunity (100 ns glitch rejection), and compatibility with diverse voltage domains via its open-drain RESET output.

Technical Context

The ADM6315-26D4ARTRL7 implements a precision bandgap-based voltage reference comparator with temperature-compensated trip point (60 ppm/°C) and internal hysteresis to prevent chatter during slow VCC transitions. Its reset timeout is fixed at 1120 ms minimum and is independent of VCC slew rate.

It features a fully debounced manual reset input (MR) with guaranteed 1 μs pulse acceptance and 100 ns transient rejection, plus an open-drain RESET output capable of sinking 3.2 mA at VCC > 4.25 V - enabling direct interface to higher-voltage logic families without level-shifting.

Key Specifications

Pinout & Package

ADM6315-26D4ARTRL7 is housed in a 4-lead SOT-143 package (RA-4), measuring 2.9 mm × 1.6 mm × 1.15 mm, optimized for space-constrained PCB layouts in automotive and industrial modules.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX6315US26D4+T and TPS3808G33DBVR, the ADM6315-26D4ARTRL7 offers superior thermal stability (±3.5% to +125°C vs. ±2.5% to +85°C) and native MR support, making it optimal for safety-critical, wide-temperature applications where reset timing predictability is non-negotiable.

Availability

ADM6315-26D4ARTRL7 is available at Aetrix Electronics and suitable for automotive engine control units, industrial PLC I/O modules, medical infusion pump controllers, and smart energy meter MCU subsystems requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for ADM6315-26D4ARTRL7 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 ADM6315 family was engineered specifically for robust power-supply monitoring in safety-critical embedded systems, emphasizing precision threshold stability, ultra-low quiescent current, and deterministic reset timing under extreme thermal and electrical stress.

FAQ

What is the exact reset threshold voltage and tolerance for ADM6315-26D4ARTRL7?

The ADM6315-26D4ARTRL7 has a nominal reset threshold of 2.63 V, with a tolerance of ±3.5% over the full operating temperature range of −40°C to +125°C. This specification ensures reliable detection of supply degradation as small as 1.8% while maintaining stability across automotive and industrial thermal environments. The ADM6315-26D4ARTRL7 achieves this using a trimmed bandgap reference and on-chip temperature compensation.

Does ADM6315-26D4ARTRL7 support manual reset, and how is it implemented?

Yes, ADM6315-26D4ARTRL7 includes a dedicated MR (Manual Reset) pin (Pin 3) that accepts active-low signals. It features hardware debouncing with guaranteed acceptance of pulses ≥1 μs and rejection of transients <100 ns. When MR is pulled low, RESET asserts immediately and remains low for the full 1120 ms timeout. The ADM6315-26D4ARTRL7 requires no external RC network for debounce, reducing BOM count and layout complexity.

What is the minimum VCC voltage at which ADM6315-26D4ARTRL7 can assert reset?

The ADM6315-26D4ARTRL7 can assert reset down to VCC > 1 V, enabling fail-safe behavior during deep brownout conditions where other supervisory ICs may cease operation. This capability is critical in systems where partial functionality must persist long enough to execute safe shutdown sequences. The ADM6315-26D4ARTRL7 maintains accurate threshold comparison and timing control even at this low VCC level.

How does the open-drain RESET output of ADM6315-26D4ARTRL7 interface with higher-voltage logic families?

The open-drain RESET output of ADM6315-26D4ARTRL7 allows direct connection to pull-up voltages up to 6 V, enabling seamless interfacing with 3.3 V, 5 V, or mixed-voltage logic domains without level shifters. It sinks up to 3.2 mA at VCC > 4.25 V, supporting standard TTL/CMOS input thresholds. This architecture permits wired-OR reset busing across multiple ADM6315-26D4ARTRL7 devices or other open-drain supervisors on a shared reset line.

Is ADM6315-26D4ARTRL7 RoHS-compliant and lead-free?

Yes, ADM6315-26D4ARTRL7 is RoHS-compliant and lead-free, as indicated by the "Z" suffix in its full ordering code (ADM6315-26D4ARTZR7). The "R7" tape-and-reel packaging format confirms compliance with JEDEC standards for moisture sensitivity level (MSL) 1 and supports automated SMT assembly. All Analog Devices products, including ADM6315-26D4ARTRL7, meet EU RoHS Directive 2011/65/EU and China RoHS requirements.