Analog Devices Inc. ADM6315-44D1ART-RL

Overview

ADM6315-44D1ART-RL from Analog Devices is a precision open-drain microprocessor supervisory circuit in SOT-143 package, monitoring 4.39 V supply with ±2.5% threshold accuracy over −40°C to +85°C, 1 ms minimum reset timeout, and 5 μA typical supply current. It ensures reliable power-up/brownout reset for embedded controllers and safety-critical instrumentation.

For engineers reviewing the ADM6315-44D1ART-RL datasheet, ADM6315-44D1ART-RL pinout, ADM6315-44D1ART-RL application, or ADM6315-44D1ART-RL equivalent, this page delivers verified voltage threshold, reset timing, manual reset behavior, thermal performance, and SOT-143 package integration details essential for automotive and industrial system design.

Technical Context

The ADM6315-44D1ART-RL implements a precision bandgap-based voltage comparator with built-in hysteresis and temperature-compensated reference (60 ppm/°C), enabling accurate detection of 1.8% supply degradation. Its reset assertion remains active down to VCC > 1 V and features glitch-immune manual reset input with 100 ns pulse rejection.

It delivers an open-drain RESET output capable of sinking 3.2 mA at VCC > 4.25 V, compatible with higher-voltage logic interfaces. The device operates across −40°C to +125°C, with thermal resistance θJA = 330°C/W in its 4-lead SOT-143 package.

Key Specifications

Pinout & Package

Package: 4-lead SOT-143 (RA-4), surface-mount, 1.3 mm × 2.1 mm footprint, 330°C/W junction-to-ambient thermal resistance.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX6315US44D1+T and TPS3808G18DBVR, the ADM6315-44D1ART-RL uniquely balances 4.39 V precision, 1 ms fixed timing, sub-10 μA operation, and SOT-143 compatibility-making it optimal for space-constrained 5 V microcontroller supervision where pin count and layout reuse matter.

Availability

ADM6315-44D1ART-RL is available at Aetrix Electronics and suitable for automotive engine control units, industrial PLC modules, medical infusion pump controllers, and railway signaling interface boards requiring stable component supply across extended temperature and long lifecycle programs.

Supply support for ADM6315-44D1ART-RL 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 designed specifically for robust, low-power voltage supervision in safety-critical embedded systems-emphasizing precision threshold stability, fast brownout response, and manual reset resilience in harsh environments.

FAQ

What is the exact reset threshold voltage and tolerance for ADM6315-44D1ART-RL?

The ADM6315-44D1ART-RL has a nominal reset threshold of 4.39 V, with ±2.5% tolerance over −40°C to +85°C and ±3.5% over −40°C to +125°C. This value is factory-trimmed and specified in Table 1 of the Rev. I datasheet. The ADM6315-44D1ART-RL achieves this using a temperature-compensated bandgap reference with 60 ppm/°C drift, ensuring consistent brownout detection across operating conditions.

Does ADM6315-44D1ART-RL support manual reset, and how is it implemented?

Yes, the ADM6315-44D1ART-RL includes a dedicated MR (Manual Reset) pin (Pin 3) that is active-low and internally debounced. It rejects glitches shorter than 100 ns and reliably detects pulses ≥1 μs. When pulled low, it forces RESET assertion regardless of VCC level. The ADM6315-44D1ART-RL does not require external RC filtering unless used in extremely noisy environments, where a 1 μF capacitor to ground is recommended.

What is the minimum VCC required for ADM6315-44D1ART-RL to assert RESET?

The ADM6315-44D1ART-RL asserts RESET down to VCC > 1 V, per Absolute Maximum Ratings and General Description. This allows the device to remain functional and generate a valid reset signal even during severe brownout or battery depletion scenarios-critical for fail-safe shutdown in automotive and medical applications using the ADM6315-44D1ART-RL.

Is ADM6315-44D1ART-RL pin-compatible with any other supervisory ICs?

Yes, the ADM6315-44D1ART-RL is explicitly stated as pin-compatible with the ADM811 in the datasheet Features section. Both share identical SOT-143 pinout (GND, RESET, MR, VCC) and open-drain RESET output. However, the ADM811 offers different threshold options and timeout periods; direct substitution requires verification of matching trip point and timing requirements for the specific application.

What package type and thermal characteristics does ADM6315-44D1ART-RL use?

The ADM6315-44D1ART-RL uses a 4-lead SOT-143 (RA-4) package measuring 1.3 mm × 2.1 mm. Its thermal resistance is θJA = 330°C/W under standard JEDEC PCB mounting conditions. This compact, surface-mount package supports high-density layouts while maintaining adequate thermal performance for ambient temperatures up to +125°C-key for under-hood automotive and industrial enclosure deployments of the ADM6315-44D1ART-RL.