Analog Devices Inc. ADM6315-44D1ARTRL7

Overview

ADM6315-44D1ARTRL7 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 ADM6315-44D1ARTRL7 datasheet, ADM6315-44D1ARTRL7 pinout, ADM6315-44D1ARTRL7 application, or ADM6315-44D1ARTRL7 equivalent, key selection criteria include reset threshold tolerance, manual reset debounce timing, open-drain output drive capability at low VCC, and thermal stability across automotive-grade temperature range.

Technical Context

The ADM6315-44D1ARTRL7 implements a precision bandgap-based voltage reference comparator with built-in hysteresis and temperature-compensated trip point of 4.39 V (±2.5% over −40°C to +85°C). Its internal reset timer guarantees ≥1 ms assertion after VCC rise or MR deassertion.

It features a debounced manual reset input (MR) rejecting <100 ns glitches and accepting ≥1 μs pulses, plus an open-drain RESET output capable of sinking 3.2 mA at VCC > 4.25 V while asserting down to VCC = 1 V - enabling interoperability with higher-voltage logic domains.

Key Specifications

Pinout & Package

ADM6315-44D1ARTRL7 is housed in a 4-lead SOT-143 surface-mount package (RA-4), measuring 2.9 mm × 1.6 mm × 1.1 mm, optimized for space-constrained PCB layouts.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX6315US44D1+T and TPS3808G33DBVR, ADM6315-44D1ARTRL7 offers guaranteed +85°C operation with tighter threshold tolerance (±2.5% vs. ±3%), integrated MR debounce, and direct compatibility with legacy ADM811 designs - making it optimal for industrial control upgrades requiring minimal layout change.

Availability

ADM6315-44D1ARTRL7 is available at Aetrix Electronics and suitable for industrial PLC controllers, automotive body control modules, medical patient monitors, and smart energy meters requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for ADM6315-44D1ARTRL7 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, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, founded in 1965 and headquartered in Wilmington, MA.

The ADM6315 family was designed specifically for robust power-supply monitoring in harsh industrial and automotive environments, emphasizing precision threshold accuracy, low power, and noise-immune reset generation.

FAQ

What is the exact reset threshold voltage of ADM6315-44D1ARTRL7 and how does it vary with temperature?

The ADM6315-44D1ARTRL7 has a nominal reset threshold of 4.39 V, with tolerance of ±2.5% over −40°C to +85°C and ±3.5% over −40°C to +125°C. Its temperature coefficient is 60 ppm/°C, meaning drift is bounded and predictable - critical for systems operating across wide ambient ranges without calibration.

Does ADM6315-44D1ARTRL7 support manual reset, and what are its timing requirements?

Yes, ADM6315-44D1ARTRL7 includes a dedicated MR pin that accepts active-low pulses ≥1 μs in duration and rejects transients <100 ns. The MR input is internally debounced and functions independently of VCC level - allowing reliable reset initiation even during brownout conditions.

What is the minimum VCC required for ADM6315-44D1ARTRL7 to assert RESET reliably?

ADM6315-44D1ARTRL7 asserts RESET down to VCC = 1 V, ensuring fail-safe operation during deep brownout. Its internal comparator and timer remain functional at this level, and the open-drain RESET output can still sink 80 μA - sufficient to drive high-impedance logic inputs.

Is ADM6315-44D1ARTRL7 pin-compatible with other supervisory ICs, and which ones?

Yes, ADM6315-44D1ARTRL7 is explicitly pin-compatible with the ADM811 series in the same SOT-143 package. This enables drop-in replacement in existing designs without PCB modification, preserving layout integrity while upgrading to improved threshold accuracy and temperature range.

What package type and RoHS status does ADM6315-44D1ARTRL7 use?

ADM6315-44D1ARTRL7 is supplied in a 4-lead SOT-143 (RA-4) package and is RoHS-compliant, indicated by the "R" suffix in the ordering code and lead-free marking per Analog Devices' standard practice.