Analog Devices Inc. ADM1060ARU

Overview

ADM1060ARU from Analog Devices is a programmable supervisory/sequencing IC for multivoltage communications systems, featuring 7 independent supply fault detectors (1 high-voltage up to +14.4 V, 4 positive-only up to +6 V, 2 bipolar ±2 V to ±6 V), watchdog timeout programmable from 200 ms to 12.8 s, and 9 configurable programmable driver outputs (PDOs) supporting charge-pumped high-drive mode for external N-FET gate control. It enables ordered power-up/down sequencing in central office systems and high-density server boards.

For engineers reviewing the ADM1060ARU datasheet, ADM1060ARU pinout, ADM1060ARU application, or ADM1060ARU equivalent, key selection considerations include supply fault detection range flexibility, SMBus-programmable logic sequencing with 0–500 ms per-edge delays, EEPROM-based configuration persistence, internal charge-pump capability on PDO1–PDO4, and support for both undervoltage/overvoltage/out-of-window fault detection with programmable hysteresis and glitch filtering.

Technical Context

The ADM1060ARU implements a programmable logic block array (PLBA) composed of nine macrocells-each controlling one PDO-with combinational and sequential logic routing across all inputs (VH, VPn, VBn, GPI, WDI). Each macrocell output feeds into an independently programmable delay block (0–500 ms rising/falling edge delay), enabling precise inter-supply timing dependencies such as "PDO1 asserts only after VP2, VP3, VP4 are in tolerance AND VB1/VH have been stable for 200 ms AND PDO7 is asserted."

Supply arbitration uses diode-OR plus synchronous rectifier switches to select VDDCAP from the highest valid input among VH (≥4.75 V) or any VPn (≥3.0 V), minimizing dropout to ~0.2 V; VBn supplies cannot power the device. The internal 5.25 V regulated supply powers core logic, while a separate charge-pump circuit generates up to 14 V on PDO1–PDO4 for driving external N-channel FETs in supply paths.

Key Specifications

Pinout & Package

ADM1060ARU is housed in a 28-lead TSSOP package (4.4 mm × 9.7 mm, 0.65 mm pitch) with exposed thermal pad. Power and signal pins are arranged to minimize noise coupling between high-voltage detection inputs (VH), bipolar inputs (VB1/VB2), and digital interfaces (SCL/SDA).

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS386000RGPT and MAX16050ETL+, the ADM1060ARU uniquely combines bipolar supply monitoring, high-voltage detection up to +14.4 V, internally charge-pumped PDOs for FET gate drive, and full PLBA-based sequencing logic - making it the only option capable of autonomous multirail coordination in telecom infrastructure and high-end servers.

Availability

ADM1060ARU is available at Aetrix Electronics and suitable for central office systems, server board designs, and infrastructure network boards requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.

Supply support for ADM1060ARU 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, headquartered in Norwood, MA, with design centers worldwide and a focus on precision signal chain solutions.

The ADM1060ARU belongs to Analog Devices' power supervision and sequencing product line, engineered specifically for multivoltage communications infrastructure where reliable fault detection, deterministic sequencing, and nonvolatile configuration storage are critical.

FAQ

What is the maximum input voltage the ADM1060ARU can monitor on its VH pin?

The ADM1060ARU supports a VH input voltage range of +2 V to +14.4 V, with absolute maximum rating of 17 V. This allows direct monitoring of common backplane-derived rails such as +12 V or +5 V standby without external attenuation. Operation above +14.4 V risks violating specification limits and may trigger fault conditions or damage the pin.

Can the ADM1060ARU monitor negative supply rails, and if so, how many?

Yes, the ADM1060ARU monitors two independent negative supply rails via its VB1 and VB2 pins, each supporting –2 V to –6 V in negative mode. Polarity is selected per channel using Bit 7 of the BS1SEL/BS2SEL register. These inputs cannot power the device, and their detection accuracy is specified at ±1.5% factory-calibrated.

Does the ADM1060ARU require external components to operate, and which ones are mandatory?

Yes, the ADM1060ARU requires two mandatory external capacitors: a 1 µF (minimum 0.1 µF) capacitor from VDDCAP to GND for supply decoupling and brownout hold-up, and a second 1 µF (minimum 0.1 µF) capacitor from VCCP to GND to support the internal charge pump. No external resistors or level shifters are required for basic operation.

How does the ADM1060ARU handle power supply arbitration when multiple inputs are active?

The ADM1060ARU uses an internal VDD arbitrator with diode-OR plus synchronous rectifier switches to select VDDCAP from the highest valid supply among VH (≥4.75 V) or any VPn (≥3.0 V). Voltage drop is minimized to ~0.2 V. If two supplies differ by <100 mV, the first to reach regulation retains control unless the other exceeds it by >100 mV.

What types of fault detection does the ADM1060ARU support per supply input?

The ADM1060ARU supports three fault detection modes per supply input: undervoltage (UV), overvoltage (OV), or out-of-window (UV OR OV). Only one mode can be active per SFD channel at a time, selected via Bits 0–1 of the _SnSEL register. Each mode uses independent 8-bit DAC-programmed thresholds and 5-bit hysteresis settings.