Analog Devices Inc. ADM6306D131ARJZ1R7

Overview

ADM6306D131ARJZ1R7 from Analog Devices is a dual-supply supervisory IC with factory-trimmed VCC reset threshold of 3.08 V and 0.4 V adjustable RST IN threshold, 1 ms minimum reset timeout, active-low open-drain RESET output, and manual reset (MR) input - used to ensure reliable power-on reset in microprocessor systems with mixed-voltage rails.

For engineers reviewing the ADM6306D131ARJZ1R7 datasheet, ADM6306D131ARJZ1R7 pinout, ADM6306D131ARJZ1R7 application, or ADM6306D131ARJZ1R7 equivalent, key selection factors include its 3.08 V VCC monitoring accuracy over −40°C to +125°C, 0.4 V resistor-programmable input for low-voltage rail supervision, MR debounced input with 63.5 kΩ internal pull-up, and guaranteed RESET validity down to VCC = 0.9 V.

Technical Context

The ADM6306D131ARJZ1R7 integrates two independent voltage monitoring paths: one factory-trimmed internal divider for precise 3.08 V VCC supervision (±2.5% over full temperature range), and one high-impedance (±25 nA leakage) 0.4 V adjustable comparator input for external resistor-divider configuration. Its reset generator uses a time-based glitch filter instead of hysteresis on the 0.4 V input.

It features a debounced manual reset input (MR) with 1.5 µs minimum pulse width requirement at full temperature range, 500 ns MR-to-RESET delay, and integrated noise immunity rejecting transients <0.1 µs. The open-drain RESET output sinks up to 3.2 mA at VCC > 4.25 V and remains functional down to VCC = 0.9 V.

Key Specifications

Pinout & Package

ADM6306D131ARJZ1R7 is housed in a RoHS-compliant 5-lead SOT-23 (RJ-5) package, 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 MAX6326L31D2T+ and TPS3808G33DBVR, ADM6306D131ARJZ1R7 uniquely combines factory-trimmed 3.08 V supervision, 0.4 V programmable input for secondary rail monitoring, 1 ms timeout, and debounced MR - enabling compact, multi-rail reset control in space- and timing-constrained designs.

Availability

ADM6306D131ARJZ1R7 is available at Aetrix Electronics and suitable for portable power management, industrial microcontroller systems, and automotive body control modules requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for ADM6306D131ARJZ1R7 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 ADM6306 series belongs to Analog Devices' Multi-Voltage Monitor product line, designed specifically for robust, low-power supervision of multiple supply rails in space-constrained and thermally demanding embedded systems.

FAQ

What is the exact VCC reset threshold voltage for ADM6306D131ARJZ1R7?

The ADM6306D131ARJZ1R7 has a factory-trimmed VCC reset threshold of 3.08 V, with tolerance of ±2.5% over the full −40°C to +125°C operating temperature range. This value is confirmed in Table 6 (Reset Threshold Number 31) and Ordering Guide of the ADM6305/ADM6306 Rev. C datasheet. The threshold is implemented via an internal precision voltage divider and does not require external components.

Does ADM6306D131ARJZ1R7 support supervision of a 1.2 V rail?

Yes, ADM6306D131ARJZ1R7 supports 1.2 V rail supervision using its RST IN pin configured with a resistor divider. With a 0.4 V threshold, a 3:1 divider (e.g., 200 kΩ top, 100 kΩ bottom) scales 1.2 V to 0.4 V at RST IN. Input leakage is ±25 nA, minimizing divider error. This configuration is explicitly validated in the datasheet's Theory of Operation and Figure 14.

What is the minimum pulse width required on the MR input of ADM6306D131ARJZ1R7?

The ADM6306D131ARJZ1R7 requires a minimum MR input pulse width of 1.5 µs over the full −40°C to +125°C temperature range, as specified in Table 1 (MR Minimum Input Pulse Width). This ensures reliable detection while rejecting noise spikes. The internal 63.5 kΩ pull-up resistor guarantees MR is high when unconnected, eliminating need for external pull-up.

Can ADM6306D131ARJZ1R7 generate a valid RESET signal when VCC drops below 1.0 V?

Yes, ADM6306D131ARJZ1R7 guarantees RESET output validity down to VCC = 0.9 V, as stated in the General Description and Table 1 (Operating Voltage Range, VCC). At VCC = 0.9 V and ISINK = 25 µA, VOL ≤ 0.3 V - ensuring clean logic-low assertion even during deep brownout conditions before complete power loss.

How does the reset timeout behavior work after MR activation on ADM6306D131ARJZ1R7?

When MR is driven low and then released (rising edge), ADM6306D131ARJZ1R7 asserts RESET for the full programmed timeout period - 1.0 to 2.0 ms minimum - regardless of VCC or RST IN status. This behavior is documented in the Manual Reset Input section and ensures deterministic reset duration for system recovery, independent of supply stability during the MR event.