Analog Devices Inc. ADM6306D131ARJZ-R7

Overview

ADM6306D131ARJZ-R7 from Analog Devices is a dual-supply supervisory IC with factory-trimmed VCC reset threshold of 3.08 V (±2.5% over −40°C to +125°C), adjustable RST IN threshold of 1.23 V, 1 ms minimum reset timeout, active-low open-drain RESET output, and manual reset (MR) input - designed for reliable power-on reset and brownout detection in microprocessor systems.

For engineers reviewing the ADM6306D131ARJZ-R7 datasheet, ADM6306D131ARJZ-R7 pinout, ADM6306D131ARJZ-R7 application, or ADM6306D131ARJZ-R7 equivalent, key selection criteria include its precise 3.08 V VCC monitoring tolerance, 1.23 V resistor-programmable auxiliary input, MR debounced timing, low 5 µA supply current, and guaranteed operation down to VCC = 0.9 V - critical for battery-backed and automotive-grade embedded designs.

Technical Context

The ADM6306D131ARJZ-R7 integrates two independent voltage monitoring paths: one factory-trimmed internal divider for VCC supervision at 3.08 V nominal, and a high-impedance (±25 nA) 1.23 V comparator input (RST IN) configurable via external resistor divider. Its glitch-rejecting MR input features 63.5 kΩ internal pull-up and 1.5 µs minimum pulse width requirement.

Reset assertion occurs when either VCC falls below 3.08 V (with ±2.5% temp drift) or RST IN drops below 1.23 V; after recovery, RESET remains low for exactly 1 ms (min) before deassertion. The open-drain output sinks up to 3.2 mA at VCC > 4.25 V and remains valid down to VCC = 0.9 V.

Key Specifications

Pinout & Package

ADM6306D131ARJZ-R7 is housed in a RoHS-compliant 5-lead SOT-23 (RJ-5) package, measuring 2.90 mm × 1.60 mm × 1.15 mm, with JEDEC MO-178-AA compliance and C2 pin 1 orientation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX6326UT29D3+T and TPS3808G12DBVR, ADM6306D131ARJZ-R7 uniquely combines factory-trimmed 3.08 V accuracy, 1.23 V programmable input, manual reset, and sub-millisecond timeout - making it optimal for space-constrained dual-rail systems requiring deterministic, low-power reset control.

Availability

ADM6306D131ARJZ-R7 is available at Aetrix Electronics and suitable for industrial PLC I/O modules, automotive body control units, medical patient monitors, and smart energy meters requiring stable component supply, long-term lifecycle support, and AEC-Q200-aligned reliability.

Supply support for ADM6306D131ARJZ-R7 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, headquartered in Norwood, MA, serving industrial, automotive, communications, and healthcare markets.

The ADM6306 series belongs to Analog Devices' Multi-Voltage Monitor product line, engineered specifically for robust, low-power dual-rail supervision in mission-critical embedded systems where precision thresholding and manual intervention are required.

FAQ

What is the exact VCC reset threshold voltage of ADM6306D131ARJZ-R7 and how does temperature affect it?

The ADM6306D131ARJZ-R7 has a factory-trimmed VCC reset threshold of 3.08 V, with tolerance of ±2.5% over the full operating temperature range of −40°C to +125°C. At 25°C, the typical value is 3.08 V with ±1% tolerance. This specification ensures reliable 3.3 V rail monitoring without external calibration, and the 25 ppm/°C temperature coefficient maintains stability across automotive and industrial thermal profiles.

Does ADM6306D131ARJZ-R7 support monitoring of a second voltage rail beyond VCC?

Yes, ADM6306D131ARJZ-R7 supports monitoring of a second voltage rail via its RST IN pin, which has a fixed 1.23 V threshold. By connecting an external resistor divider between the target rail and RST IN, users can program monitoring of any voltage above 1.23 V - for example, scaling a 12 V rail to 1.23 V using a 9.75:1 divider. The ±25 nA input leakage ensures minimal error contribution from the divider network.

What is the minimum pulse width required on the MR input of ADM6306D131ARJZ-R7 to trigger a reset?

The MR input of ADM6306D131ARJZ-R7 requires a minimum low pulse width of 1.5 µs over the full temperature range (−40°C to +125°C). At 0°C to +70°C, the spec relaxes to 1 µs. This short requirement enables reliable triggering from microcontroller GPIOs or mechanical switches with minimal external conditioning, while the integrated glitch filter rejects noise spikes shorter than 0.1 µs.

Can ADM6306D131ARJZ-R7 operate and assert RESET when VCC drops below 1.0 V?

Yes, ADM6306D131ARJZ-R7 guarantees RESET output validity down to VCC = 0.9 V, meaning it can both monitor supply collapse and maintain a defined active-low state during deep brownout. The RESET output remains functional and sinks up to 25 µA at VCC = 0.9 V, ensuring microprocessor reset integrity even during catastrophic power failure scenarios.

What are the absolute maximum ratings for ADM6306D131ARJZ-R7's VCC and RST IN pins?

The absolute maximum rating for VCC is −0.3 V to +6 V. For RST IN (and all other pins except VCC), the rating is −0.3 V to (VCC + 0.3 V). Exceeding these limits risks permanent damage. These ratings define safe handling and layout boundaries - for instance, RST IN must never be driven above VCC + 0.3 V, even transiently, and VCC must not exceed 6 V under any condition including surge events.