Analog Devices Inc. ADM6306D330ARJZ-R7

Overview

ADM6306D330ARJZ-R7 from Analog Devices is a dual-supply supervisory IC with factory-trimmed VCC reset threshold of 3.0 V and adjustable RST IN threshold of 1.23 V, delivering 140 ms minimum reset timeout, active-low open-drain RESET output, and manual reset (MR) input - used to ensure reliable power-on and brownout reset in microprocessor systems operating from 2.5 V to 5 V supplies.

For engineers reviewing the ADM6306D330ARJZ-R7 datasheet, ADM6306D330ARJZ-R7 pinout, ADM6306D330ARJZ-R7 application, or ADM6306D330ARJZ-R7 equivalent, key selection criteria include its 3.0 V ±2.5% VCC threshold accuracy over −40°C to +125°C, MR input with integrated 63.5 kΩ pull-up and 1.5 µs minimum pulse width, and guaranteed RESET validity down to VCC = 0.9 V.

Technical Context

The ADM6306D330ARJZ-R7 integrates two independent voltage monitoring paths: one factory-trimmed internal divider for precise 3.0 V VCC supervision (±2.5% tolerance over full temperature range), and one high-impedance (±25 nA leakage) 1.23 V adjustable comparator input (RST IN) for external rail monitoring via resistor divider. Its glitch-rejecting MR input asserts RESET on falling edge and holds for the full 140 ms timeout after release.

RESET generation uses a time-based timeout architecture - not hysteresis - with four factory-programmed delay options; this variant selects the 140 ms option (D3 code). The open-drain output sinks up to 3.2 mA at VCC > 4.25 V and remains functional down to VCC = 0.9 V, enabling robust reset signaling even during deep supply sag.

Key Specifications

Pinout & Package

ADM6306D330ARJZ-R7 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 for tape-and-reel handling.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX6326–L30T and TPS3808G30DBVR, ADM6306D330ARJZ-R7 uniquely combines factory-trimmed 3.0 V VCC supervision, 1.23 V adjustable secondary input, and integrated MR - enabling dual-rail monitoring and field-service reset in one 5-pin device without external components.

Availability

ADM6306D330ARJZ-R7 is available at Aetrix Electronics and suitable for microprocessor systems, battery-powered edge devices, industrial PLC modules, and automotive body control units requiring stable component supply, extended temperature operation, and dual-rail supervision capability.

Supply support for ADM6306D330ARJZ-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, with design and manufacturing operations worldwide.

The ADM6306 series belongs to Analog Devices' precision voltage supervisor product line, engineered specifically for reliable power-on reset, brownout detection, and manual reset functionality in space- and power-constrained embedded systems.

FAQ

What is the exact VCC reset threshold voltage for ADM6306D330ARJZ-R7?

The ADM6306D330ARJZ-R7 has a factory-trimmed VCC reset threshold of 3.0 V, with tolerance of ±2.5% over the full operating temperature range of −40°C to +125°C. This value is confirmed in Table 6 of the datasheet (Reset Threshold Number 30), and applies specifically to the ADM6306D330ARJZ-R7 variant - not inferred from adjacent part numbers or family generalizations.

Does ADM6306D330ARJZ-R7 support monitoring of a second voltage rail besides VCC?

Yes, ADM6306D330ARJZ-R7 supports secondary rail monitoring via its RST IN pin, which features a fixed 1.23 V threshold comparator. By connecting an external resistor divider from the target rail to RST IN, users can monitor any voltage ≥1.23 V - for example, a 1.8 V or 3.3 V rail - while VCC simultaneously monitors the 3.0 V primary supply.

What is the minimum pulse width required on the MR pin of ADM6306D330ARJZ-R7 to trigger reset?

The MR input of ADM6306D330ARJZ-R7 requires a minimum low pulse width of 1.5 µs over the full temperature range (−40°C to +125°C). This specification is explicitly stated in the "MR Minimum Input Pulse Width" row of Table 1 in the datasheet and is validated for reliable assertion across automotive and industrial environments.

Can ADM6306D330ARJZ-R7 generate a valid RESET signal when VCC drops below 2.5 V?

Yes, ADM6306D330ARJZ-R7 maintains valid RESET output functionality down to VCC = 0.9 V, as confirmed in the "OPERATING VOLTAGE RANGE, VCC" row of Table 1 and General Description section. This enables robust reset signaling during deep brownout events where many competing supervisors cease operation above 1.8 V.

Is the 140 ms reset timeout of ADM6306D330ARJZ-R7 guaranteed over temperature?

Yes, the 140 ms minimum reset timeout (D3 code) is specified across −40°C to +125°C, with typical value of 200 ms and maximum of 280 ms per Table 7. This timing is generated by an internal oscillator and does not rely on external components, ensuring consistent behavior without calibration or temperature compensation.