Analog Devices Inc. ADM1063ASUZ

Overview

ADM1063ASUZ from Analog Devices is a multisupply supervisory and sequencing IC with integrated 12-bit ADC, temperature monitoring (1 internal + 2 remote diode channels), and 10 programmable driver outputs (PDOs). It supervises up to 10 voltage rails with <1.0% accuracy across −40°C to +85°C, supports supply margining on 6 rails, and implements state-machine-based sequencing via SMBus-configurable EEPROM. It is used in multivoltage server line cards for coordinated FPGA/DSP power-up and fault recovery.

For engineers reviewing the ADM1063ASUZ datasheet, ADM1063ASUZ pinout, ADM1063ASUZ application, or ADM1063ASUZ equivalent, key selection criteria include its 10-supply supervision capability, charge-pumped high-voltage PDOs (up to 14 V) for N-FET gate drive, dual-mode VXx inputs (analog fault detection or digital logic), round-robin ADC readback of 12 channels, and support for hot-swap-safe 12 V backplane powering.

Technical Context

The ADM1063ASUZ integrates a deterministic sequencing engine (SE) implementing a 63-state finite state machine, enabling conditional transitions based on input events (e.g., supply OK, overtemperature, watchdog timeout). Its 12-bit SAR ADC performs simultaneous voltage readback and temperature measurement using shared analog front-end resources, with configurable input attenuation for VH (6–14.4 V), VPx (1.25–6 V), and VXx (0.573–1.375 V) inputs.

Power arbitration selects the highest valid supply among VH or VPx (≥3.0 V) to generate a regulated 4.75 V VDDCAP output; this architecture ensures redundancy without external OR-ing. Six PDOs (PDO1–PDO6) integrate internal charge pumps to deliver ≥10.5 V at 1 μA for driving external N-FETs, while all 10 PDOs support open-collector, push-pull, or weak-pull-up modes referenced to VDDCAP or VPx.

Key Specifications

Pinout & Package

ADM1063ASUZ is packaged in a 40-lead, 6 mm × 6 mm LFCSP with exposed pad (NC, recommended for mechanical stability). Pin functions are validated per Analog Devices Rev. D datasheet Figures 3 and Table 4.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADM1166ACPZ and TPS40422RTWR, ADM1063ASUZ uniquely combines 10-rail supervision, integrated 12-bit ADC readback, dual remote temperature sensing, and charge-pumped high-voltage PDOs-enabling full telemetry-driven power management in a single chip where alternatives require multiple ICs or sacrifice monitoring fidelity.

Availability

ADM1063ASUZ is available at Aetrix Electronics and suitable for server line cards, FPGA/DSP power systems, multivoltage telecom equipment, and central office infrastructure requiring stable component supply, long-term lifecycle support, and guaranteed traceability.

Supply support for ADM1063ASUZ 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 semiconductor company specializing in high-performance analog, mixed-signal, and digital signal processing technologies for precision instrumentation, industrial automation, and communications infrastructure.

The ADM1063ASUZ belongs to Analog Devices' Power Management and Supervisory IC product line, designed specifically for complex multirail systems requiring deterministic sequencing, real-time telemetry, and robust fault handling in servers, routers, and telecom line cards.

FAQ

What is the maximum number of voltage rails the ADM1063ASUZ can supervise?

The ADM1063ASUZ can supervise up to 10 independent voltage rails using its VH, VP1–VP4, and VX1–VX5 inputs. Each input supports programmable undervoltage, overvoltage, and out-of-window fault detection with <1.0% accuracy across temperature. The device does not require external components to configure these thresholds, as all supervision logic is implemented internally and stored in EEPROM.

Does the ADM1063ASUZ support voltage margining, and how many rails can be adjusted?

Yes, the ADM1063ASUZ provides a complete closed-loop voltage margining solution for 6 voltage rails. It uses its integrated 12-bit ADC to measure rail voltages and internal DACs to adjust reference points via SMBus commands. Margining is performed in real time without host processor involvement, and results are verified through ADC readback-ensuring accuracy within the specified ±1% threshold tolerance.

What are the key differences between the PDO output modes on the ADM1063ASUZ?

The ADM1063ASUZ offers three PDO modes: (1) Open-collector with external pull-up (standard), (2) Push-pull driven to VDDCAP or VPx, and (3) Open-collector with internal weak pull-up (~20 kΩ). Additionally, PDO1–PDO6 support charge-pumped high-voltage mode (11–14 V), enabling direct drive of N-FET gates without external level shifters-a capability absent in PDO7–PDO10.

How does the ADM1063ASUZ handle power supply redundancy and brownout conditions?

The ADM1063ASUZ uses an internal VDD arbitrator that continuously selects the highest valid supply among VH or VPx (≥3.0 V) to generate its 4.75 V VDDCAP output. During brownouts, the VDDCAP decoupling capacitor (10 μF) acts as a reservoir, sustaining operation until the next highest supply takes over-eliminating reset glitches and enabling seamless rail handover without external circuitry.

Can the ADM1063ASUZ measure temperature, and what sensor types does it support?

Yes, the ADM1063ASUZ integrates one internal die temperature sensor (±3°C accuracy) and supports two external remote thermal diodes via differential D1P/D1N and D2P/D2N inputs. All temperature measurements use the same 12-bit ADC, achieving 0.125°C resolution per code. Remote diode readings are calibrated against the internal sensor to compensate for series resistance and nonlinearity.