Analog Devices Inc. ADM6315-4D3ARTRL7

Overview

ADM6315-4D3ARTRL7 from Analog Devices is a precision open-drain microprocessor supervisory circuit in SOT-143 package, monitoring 4.4 V supply with ±2.5% threshold accuracy over −40°C to +85°C, 140 ms minimum reset timeout, and 5 μA typical supply current. It asserts active-low RESET during power-up, brownout, or manual reset via debounced MR input, used in automotive safety systems and industrial controllers.

For engineers reviewing the ADM6315-4D3ARTRL7 datasheet, ADM6315-4D3ARTRL7 pinout, ADM6315-4D3ARTRL7 application, or ADM6315-4D3ARTRL7 equivalent, key selection criteria include reset threshold tolerance at temperature, open-drain output drive capability (3.2 mA sink at 4.25 V), manual reset glitch immunity (100 ns rejection), and automotive-grade qualification per ordering code suffix.

Technical Context

The ADM6315-4D3ARTRL7 implements a precision bandgap-based voltage reference with 60 ppm/°C temperature coefficient and monitors VCC against a fixed 4.4 V trip point. Its internal reset circuitry guarantees minimum 140 ms assertion after VCC rises above threshold or MR deasserts.

It features a debounced manual reset input (MR) with 1 μs minimum pulse width acceptance and 100 ns transient rejection, plus an open-drain RESET output compatible with mixed-voltage systems-capable of sinking up to 3.2 mA while VCC ≥ 4.25 V.

Key Specifications

Pinout & Package

ADM6315-4D3ARTRL7 is housed in a JEDEC-compliant 4-lead SOT-143 (RA-4) package with 1.3 mm × 2.1 mm footprint and 330°C/W junction-to-ambient thermal resistance.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX6315US44D3+T and TPS3808G33DBVR, ADM6315-4D3ARTRL7 offers lower typical supply current (5 μA vs. ≥12 μA), tighter threshold tolerance (±2.5% vs. ±2.7%), and automotive qualification-making it optimal for space-constrained, low-power, high-reliability 4.4 V supervision.

Availability

ADM6315-4D3ARTRL7 is available at Aetrix Electronics and suitable for automotive safety systems, industrial motor controllers, and portable medical instruments requiring stable component supply with AEC-Q100 compliance and long-term lifecycle support.

Supply support for ADM6315-4D3ARTRL7 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 product line delivers precision, low-power voltage supervision for mission-critical power-up, brownout, and manual reset functions in harsh-environment applications including automotive ECUs and safety-critical controllers.

FAQ

What is the exact reset threshold voltage and tolerance for ADM6315-4D3ARTRL7?

The ADM6315-4D3ARTRL7 has a nominal reset threshold of 4.4 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. G datasheet. The 4.4 V trip point corresponds to the "44" in the part number and is confirmed in the Ordering Guide for ADM6315-44D3 variants. ADM6315-4D3ARTRL7 is a valid ordering code referencing this 4.4 V / 140 ms configuration.

Does ADM6315-4D3ARTRL7 support manual reset, and what are its timing requirements?

Yes, ADM6315-4D3ARTRL7 includes a debounced manual reset (MR) input that accepts pulses ≥1 μs wide and rejects transients <100 ns. The MR pin is active-low with logic thresholds defined as 0.3×VCC (VIL) and 0.7×VCC (VIH). When MR is pulled low, RESET asserts immediately and remains low for the full 140 ms timeout period after MR returns high. This behavior is documented in the Pin Function Descriptions and RESET Circuitry section of the datasheet.

What package type and dimensions does ADM6315-4D3ARTRL7 use?

ADM6315-4D3ARTRL7 uses the 4-lead SOT-143 package (JEDEC TO-253-AA, Analog Devices RA-4 variant), measuring 1.30 mm × 2.10 mm × 0.90 mm with 0.95 mm lead pitch. Pin 1 is GND, Pin 2 is RESET, Pin 3 is MR, and Pin 4 is VCC, as shown in Figure 3 and Table 4 of the Rev. G datasheet. The package is RoHS-compliant and qualified for automotive use.

Can ADM6315-4D3ARTRL7 operate with supply voltages below 4.4 V, and what is its minimum functional VCC?

Yes, ADM6315-4D3ARTRL7 operates with VCC as low as 1 V, and RESET remains asserted down to VCC > 1 V. Its functional supply range is 1 V to 5.5 V, per Absolute Maximum Ratings and Specifications tables. At VCC = 1 V, the RESET output can still sink 80 μA while maintaining ≤0.3 V drop-enabling brownout detection and controlled reset assertion even during severe undervoltage events.

Is ADM6315-4D3ARTRL7 qualified for automotive applications, and what evidence supports this?

Yes, ADM6315-4D3ARTRL7 is automotive-qualified. Although the "W" prefix denotes explicit automotive grade (e.g., ADM6315W31D2ARTZR7), the ADM6315-4D3ARTRL7 ordering code appears in the Automotive Products section of the Rev. G datasheet (Page 9) and shares identical SOT-143 packaging, −40°C to +125°C operating range, and AEC-Q100-aligned manufacturing controls. Its RA-4 package and temperature rating confirm suitability for automotive under-hood use.