Analog Devices Inc. ADM6315-26D4ARTZRL

Overview

ADM6315-26D4ARTZRL 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, provide 1120 ms minimum reset timeout, assert reset down to VCC > 1 V, and consume only 4–10 μA typical supply current. It serves as a system-level power integrity guard in automotive safety controllers and industrial microprocessor systems.

For engineers reviewing the ADM6315-26D4ARTZRL datasheet, ADM6315-26D4ARTZRL pinout, ADM6315-26D4ARTZRL application, or ADM6315-26D4ARTZRL equivalent, key selection criteria include its 2.63 V trip point, 1120 ms reset timeout, SOT-143 package compatibility, manual reset input with 100 ns glitch rejection, and open-drain RESET output capable of sinking 3.2 mA at VCC > 4.25 V.

Technical Context

The ADM6315-26D4ARTZRL implements a precision bandgap-based voltage reference comparator with temperature-compensated hysteresis (60 ppm/°C) to detect 2.63 V supply degradation as small as 1.8%. Its internal timing circuit generates a guaranteed minimum 1120 ms active-low reset pulse after VCC rises above threshold or MR is released.

It features a debounced manual reset input (MR) with 1 μs minimum pulse width acceptance and 100 ns transient immunity, and an open-drain RESET output that supports level-shifting interfaces-enabling connection to logic supplies higher than its own VCC, such as 5 V or 3.3 V host systems.

Key Specifications

Pinout & Package

ADM6315-26D4ARTZRL is housed in a 4-lead SOT-143 package (RA-4), measuring 2.9 mm × 1.6 mm × 1.15 mm, with gull-wing leads optimized for high-density PCB layouts and automated assembly.

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 ADM6315-26D4ARTZRL delivers exact 2.63 V supervision without external components, fixed 1120 ms timing, and SOT-143 footprint compatibility with legacy ADM811 designs - making it optimal for automotive and industrial replacements where precision and layout continuity matter.

Availability

ADM6315-26D4ARTZRL is available at Aetrix Electronics and suitable for automotive safety systems, industrial PLCs, medical infusion pumps, and energy meter data loggers requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for ADM6315-26D4ARTZRL 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 harsh environments - delivering precision voltage thresholds, wide temperature operation, and glitch-immune reset generation for mission-critical microprocessor systems.

FAQ

What is the exact reset threshold voltage of the ADM6315-26D4ARTZRL?

The ADM6315-26D4ARTZRL has a nominal reset threshold of 2.63 V, with tolerance of ±2.5% over −40°C to +85°C and ±3.5% over −40°C to +125°C. This value is laser-trimmed at wafer test and specified in Table 1 of the Rev. I datasheet. The ADM6315-26D4ARTZRL does not require external resistors to set this threshold - it is factory-configured and stable across temperature and supply variations.

Does the ADM6315-26D4ARTZRL support operation below 2.63 V?

Yes - the ADM6315-26D4ARTZRL remains functional and asserts RESET down to VCC = 1 V, as confirmed in the Absolute Maximum Ratings and Specifications tables. This allows the ADM6315-26D4ARTZRL to generate a clean reset signal even during deep brownout events where the monitored 2.63 V rail collapses well below its nominal value, ensuring safe system shutdown before logic corruption occurs.

Is the ADM6315-26D4ARTZRL pin-compatible with the ADM811?

Yes - the ADM6315-26D4ARTZRL is explicitly stated in the datasheet Features section as "Pin compatible with the ADM811". Both devices share identical SOT-143 pinout (GND, RESET, MR, VCC), identical footprint, and compatible electrical behavior, enabling direct replacement in existing ADM811-based designs without PCB modification.

What is the minimum pulse width required on the MR input of the ADM6315-26D4ARTZRL?

The ADM6315-26D4ARTZRL requires a minimum negative-going pulse width of 1 μs on the MR input to guarantee recognition, as specified in the Manual Reset section of the datasheet. Pulses shorter than 100 ns are rejected as glitches. This specification ensures reliable manual reset activation using standard tactile switches or digital outputs without added debouncing circuitry.

Can the ADM6315-26D4ARTZRL drive a 5 V logic input directly?

Yes - the ADM6315-26D4ARTZRL features an open-drain RESET output that can interface directly with 5 V logic inputs when paired with an external pull-up resistor to 5 V. The datasheet confirms the output can sink up to 3.2 mA at VCC > 4.25 V, and its voltage rating (−0.3 V to +6 V on all pins) safely accommodates 5 V pull-up - no level shifter is needed for the ADM6315-26D4ARTZRL in mixed-voltage systems.