Analog Devices Inc. ADM1062ASUZ

Overview

ADM1062ASUZ from Analog Devices is a configurable supervisory and sequencing IC for multivoltage systems, integrating 10 supply fault detectors (±1% accuracy), a 12-bit ADC for voltage readback, six 8-bit DACs for closed-loop margining (0.300 V–1.551 V output), internal/external temperature sensing, and a state-machine-based sequencing engine with 63 programmable states. It supports DSP/FPGA supply sequencing in telecom line cards.

For engineers reviewing the ADM1062ASUZ datasheet, ADM1062ASUZ pinout, ADM1062ASUZ application, or ADM1062ASUZ equivalent, key selection criteria include its 40-lead 6 mm × 6 mm LFCSP package, SMBus interface, VH/VPx supply arbitration architecture, charge-pumped high-voltage PDO outputs (up to 14 V), and dual-mode VXx inputs (analog fault detection or digital logic).

Technical Context

The ADM1062ASUZ implements a deterministic state-machine sequencing engine with conditional transitions triggered by input events (e.g., supply OK, fault, timeout), enabling precise power-up/down control and fault recovery across up to 10 rails. Its supply arbitration selects VDDCAP from the highest of VH (3.0–14.4 V) or VPx (3.0–6.0 V), ensuring operation even if one rail fails.

It integrates six buffered 8-bit DACs with four selectable center-point ranges (0.6 V to 1.25 V), each capable of sourcing/sinking 100 μA into ≤50 pF loads with 2 μs settling time, and a 12-bit SAR ADC with ±2.5 LSB INL, 0.44 ms per conversion, and round-robin scanning across all monitored inputs including VH, VPx, and VXx pins.

Key Specifications

Pinout & Package

ADM1062ASUZ is housed in a 40-lead, 6 mm × 6 mm LFCSP package with exposed pad (NC, recommended for mechanical stability). Power is derived from VH or VPx rails; VDDCAP is internally regulated to 4.75 V.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADM1062ASUZ, ADM1066ARUZ extends rail count without changing core functionality, while TPS40400RHLR trades configurability and precision for integration with power stage control - making ADM1062ASUZ optimal for high-accuracy, software-defined sequencing and margining.

Availability

ADM1062ASUZ is available at Aetrix Electronics and suitable for central office systems, server/routers, and DSP/FPGA supply sequencing requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for ADM1062ASUZ 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.

The ADM1062ASUZ belongs to Analog Devices' Super Sequencer® family, designed specifically for intelligent, software-configurable power management in multirail telecom, computing, and industrial systems where reliability, precision margining, and flexible sequencing are critical.

FAQ

What is the primary function of the ADM1062ASUZ in a power management system?

The ADM1062ASUZ serves as a configurable supervisory sequencer that monitors up to 10 voltage rails with ±1% accuracy, executes programmable power-up/down sequences using a 63-state engine, and implements closed-loop voltage margining via six 8-bit DACs and a 12-bit ADC. In systems like telecom line cards, the ADM1062ASUZ ensures safe, repeatable power delivery while enabling in-circuit validation of supply tolerances.

How does the ADM1062ASUZ achieve supply redundancy, and which pins are involved?

The ADM1062ASUZ achieves supply redundancy through internal arbitration between VH (3.0–14.4 V) and VPx (3.0–6.0 V) pins, selecting the highest valid voltage to generate VDDCAP (4.75 V regulated). This ensures continued operation if one rail fails. The VH and VP1–VP4 pins serve dual roles: they power the device and simultaneously feed the supply fault detectors - eliminating single points of failure in critical infrastructure.

Can the ADM1062ASUZ perform voltage margining without external components, and what is the supported range?

Yes, the ADM1062ASUZ performs voltage margining with minimal external components: its six 8-bit DACs output 0.300 V to 1.551 V (four center-point ranges) directly into dc-dc converter feedback or reference nodes. Each DAC sources/sinks up to 100 μA into ≤50 pF loads with 2 μs settling time. The integrated 12-bit ADC reads back actual rail voltages, enabling fully closed-loop adjustment - verified in-circuit during production testing of the ADM1062ASUZ.

What are the key differences between the VXx and VPx input pins on the ADM1062ASUZ?

VXx pins (VX1–VX5) are high-impedance (1 MΩ) dual-function inputs supporting either analog fault detection (0.573–1.375 V thresholds, no attenuation error) or general-purpose digital logic. VPx pins (VP1–VP4) are lower-impedance (52 kΩ) analog inputs with selectable attenuation, covering 1.25–6.0 V ranges. Unlike VXx, VPx pins can also power the device - making them critical for both supervision and supply arbitration in the ADM1062ASUZ.

Does the ADM1062ASUZ support remote temperature monitoring, and how is it implemented?

Yes, the ADM1062ASUZ supports remote temperature monitoring via differential DN/DP pins that interface with an external thermal diode (e.g., CPU/GPU junction diode). Paired with its internal temperature sensor (±3°C accuracy), the device uses the same 12-bit ADC to digitize both signals. Remote measurements are performed with 200 μA/12 μA current sourcing/sinking, enabling accurate board- and die-level thermal profiling - a key capability for thermal-aware sequencing in the ADM1062ASUZ.