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Analog Devices Inc. ADM1266ACPZ-R7
- Part No.:
- ADM1266ACPZ-R7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Supervisors
- Package:
- 64-WFQFN Exposed Pad, CSP
- Datasheet:
-
ADM1266ACPZ-R7.pdf
- Description:
- IC SUPERVISOR 17 CHANNEL 64LFCSP
- Quantity:
- Payment:
- Shipping:
Inventory:1,344
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Product details
Overview
ADM1266ACPZ-R7 from Analog Devices is a cascable, PMBus-compliant super sequencer IC with integrated 12-bit ADC, nine 8-bit DACs, 17 supply fault detectors, 16 PDIOs, and 9 GPIOs-designed for precise power-up/down sequencing and voltage margining in multi-rail systems up to 17 supplies. It features black-box nonvolatile fault recording, dual memory (main + backup), and an Arm® Cortex-M3 core for programmable state-machine control.
For engineers reviewing the ADM1266ACPZ-R7 datasheet, ADM1266ACPZ-R7 pinout, ADM1266ACPZ-R7 application, or ADM1266ACPZ-R7 equivalent, this page delivers verified technical context, real-world sequencing use cases, validated alternative options, and supply-chain support details specific to the 64-lead LFCSP package and production-grade R7 tape-and-reel variant.
Technical Context
The ADM1266ACPZ-R7 implements a deterministic, firmware-driven sequencing engine (SE) that monitors 17 SFD inputs (VH1–VH4, VP1–VP13), PDIOs, GPIOs, and internal timers to autonomously control power states via programmable action types-including delays, transitions, and conditional branching. Its dual-voltage input arbitration (VH1/VH2) powers the device from the higher of two 3–15 V rails, enabling robust operation during rail transitions or brownouts.
It integrates a 12-bit single-ended/differential ADC for precision voltage readback across all monitored rails, nine buffered 8-bit DAC outputs (0.2–1.55 V range, ±0.5 mV typical offset) for closed-loop margining of DC/DC converter feedback nodes, and a dedicated interdevice bus (IDB) supporting synchronized cascading of up to 16 units for systems requiring up to 257 supplies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Inputs | VH1–VH4: 0.4–15 V; VP1–VP13: 0.4–5 V - supports direct monitoring of high- and low-voltage rails without external dividers in most cases |
| ADC Resolution & Accuracy | 12-bit single-ended; ±0.62% typical VHx accuracy at 1.5–3.75 V - enables reliable detection of <1% supply deviations |
| DAC Outputs | 9 × 8-bit buffered outputs; 0.2–1.55 V range, 2.376 mV/LSB - sufficient resolution for ±1% margining of common DC/DC reference voltages |
| Fault Detection | 17 independent SFDs with programmable UV/OV thresholds, 2–100 µs glitch filter - eliminates false triggers from startup bounce or transient noise |
| Communication Interface | PMBus v1.3 compliant (400 kHz); plus proprietary 1 MHz IDB for multi-device synchronization - ensures interoperability with industry-standard power management tools |
| Nonvolatile Storage | EEPROM black box with 10,000 write cycles, 10-year data retention at 85°C - captures timestamped fault events even during uncontrolled power loss |
| Package & Thermal | 64-lead LFCSP (9 mm × 9 mm, CP-64-23); θJA = 24.2°C/W - compatible with standard industrial PCB thermal layouts and reflow profiles |
Pinout & Package
ADM1266ACPZ-R7 is housed in a 9 mm × 9 mm, 64-lead LFCSP (CP-64-23) package with exposed thermal pad (EPAD) soldered to GND. The package supports fine-pitch routing and provides low thermal resistance (θJC_BOTTOM = 0.6°C/W) for sustained operation in dense power systems.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VH1–VH4 | High-voltage supply fault detector inputs | Monitor rails up to 15 V; VH1/VH2 also serve as redundant power sources for internal AVDD_CAP regulator |
| VP1–VP13 | Low-voltage supply fault detector inputs | Monitor rails up to 5 V; support differential sensing (VP1/VP2, VP3/VP4, etc.) for noise-immune margining |
| DAC1–DAC9 | Voltage output digital-to-analog converters | Drive DC/DC trim/feedback nodes; each output is buffered, rail-to-rail capable, and load-tested to 50 pF |
| PDIO1–PDIO16 | Programmable driver I/Os | Configurable as open-drain, push-pull, or high-Z; sink up to 20 mA per pin for direct MOSFET gate or enable-line control |
| GPIO1–GPIO9 | General-purpose I/Os | Support interrupt generation, status reporting, or auxiliary sequencing logic; 4 mA drive strength, 12 mA total source/sink |
| SCL/SDA | PMBus interface pins | Open-drain, 400 kHz compliant; require 2.2 kΩ pull-ups to AVDD_CAP for noise immunity and level translation |
| ID_SCL/ID_SDA | Interdevice bus clock/data | 1 MHz bidirectional bus for synchronizing up to 16 ADM1266 units; requires external 2.2 kΩ pull-ups to AVDD_CAP |
| SYNC | 32.768 kHz timing sync I/O | Enables precise time-stamping across multiple devices; can source or accept crystal oscillator signal |
Key Features
| Feature | Design Value |
|---|---|
| Arm® Cortex-M3 sequencing engine | Enables fully programmable, conditional, and event-triggered state machines-not just fixed delay-based sequencing |
| Black-box EEPROM fault recorder | Automatically logs voltage, timestamp, and fault type to nonvolatile memory during unexpected shutdowns or overtemperature events |
| Dual configuration memory (main + backup) | Ensures fail-safe operation: if main configuration becomes corrupted, device boots from verified backup without manual intervention |
| Supply arbitration (VH1/VH2) | Eliminates single-point-of-failure power dependency-device remains operational even if one high-voltage rail collapses |
| 16× averaging ADC mode | Improves effective resolution and noise rejection on critical rails (e.g., FPGA core or ASIC I/O supplies) without external filtering |
Applications
| Telecom Line Card Power Management | Industrial PLC Backplane Sequencing |
|---|---|
Use Scenario: A 12-slot telecom line card with mixed 12 V, 5 V, 3.3 V, 1.8 V, and 1.2 V rails must sequence within strict timing windows to prevent latch-up or hot-insertion damage. IC Role / Device Role / Timing Role: ADM1266ACPZ-R7 acts as central sequencer and supervisor-monitoring all rails, enforcing power-up order (e.g., 12 V → 5 V → 3.3 V → 1.8 V → 1.2 V), and asserting reset signals only when all preconditions are met. Use Value: Eliminates need for discrete timers, comparators, and logic gates; reduces BOM count by >12 components while improving timing repeatability to ±1 ms. |
Use Scenario: An industrial programmable logic controller (PLC) requires coordinated startup of CPU, I/O modules, fieldbus interfaces (PROFINET, EtherCAT), and isolated analog inputs-all powered from separate DC/DC converters. IC Role / Device Role / Timing Role: ADM1266ACPZ-R7 serves as system-level power orchestrator-reading rail voltages via VPx inputs, controlling enable lines via PDIOs, and logging undervoltage faults on field-side 24 V supplies. Use Value: Enables deterministic boot under variable ambient temperature and load conditions; black-box logging supports root-cause analysis of field failures without onsite debug equipment. |
| Test Equipment Power Subsystem | High-Density Server Baseboard Management |
Use Scenario: Automated test equipment (ATE) demands precise voltage margining (+5%, −5%) on DUT power rails to validate tolerance margins before functional testing. IC Role / Device Role / Timing Role: ADM1266ACPZ-R7 uses its nine DAC outputs to inject controlled offsets into DC/DC feedback networks-automatically sweeping margins while continuously verifying rail stability with its 12-bit ADC. Use Value: Replaces manual bench setup with automated, repeatable margining sequences-reducing test cycle time by 65% and eliminating human error in calibration steps. |
Use Scenario: A 2U server baseboard manages >20 power rails for CPU, GPU, memory, PCIe switches, and BMC-requiring synchronized sequencing, real-time telemetry, and fault containment. IC Role / Device Role / Timing Role: ADM1266ACPZ-R7 operates in cascaded mode (with additional ADM1266 units) to supervise all rails, report telemetry via PMBus to the BMC, and isolate faulty domains by disabling associated PDIOs. Use Value: Provides centralized, firmware-upgradable power policy enforcement-enabling OEMs to update sequencing behavior post-deployment without hardware changes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar power sequencing and supervision applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADM1262ACPZ-R7 | 12-supply sequencer (vs. 17); no DACs; no black-box EEPROM; single memory bank | Lacks autonomous margining and fault history-suitable only for simpler, static sequencing tasks | Select when cost sensitivity outweighs need for margining, cascading, or long-term fault diagnostics |
| TPS65400PAPR | Integrated PMIC (6 buck + 3 LDO); fixed sequencing; no PMBus; no user-programmable SE | Designed for SoC-specific power trees-not configurable for arbitrary multi-rail systems | Select only for tightly coupled processor platforms where integration and footprint reduction are primary goals |
Compared with ADM1262ACPZ-R7 and TPS65400PAPR, the ADM1266ACPZ-R7 uniquely combines scalable cascading, closed-loop margining, and nonvolatile fault forensics-making it the only option for field-deployable systems requiring post-failure analysis and adaptive power policy updates.
Availability
ADM1266ACPZ-R7 is available at Aetrix Electronics and suitable for telecom infrastructure, industrial PLCs, automated test equipment, and high-density server baseboards requiring stable component supply, long-lifecycle support, and traceable sourcing.
Supply support for ADM1266ACPZ-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, serving industrial, automotive, communications, and healthcare markets since 1965.
The ADM1266ACPZ-R7 belongs to Analog Devices' Super Sequencer® family-designed specifically for complex, multi-rail power system orchestration in mission-critical infrastructure where reliability, configurability, and diagnostic depth are non-negotiable.
FAQ
What is the maximum number of power supplies the ADM1266ACPZ-R7 can manage in a single-device configuration?
The ADM1266ACPZ-R7 natively supervises and sequences up to 17 independent power supplies using its 4 VHx and 13 VPx inputs. Each input supports programmable undervoltage/overvoltage detection with adjustable thresholds and glitch filtering. When used in cascaded configurations via the interdevice bus (IDB), up to 16 ADM1266ACPZ-R7 devices can synchronize to manage up to 257 supplies-making it suitable for large-scale telecom or computing platforms.
Does the ADM1266ACPZ-R7 support voltage margining, and how is it implemented?
Yes, the ADM1266ACPZ-R7 supports precision voltage margining through its nine buffered 8-bit DAC outputs (DAC1–DAC9). Each DAC delivers a programmable 0.2–1.55 V output with 2.376 mV/LSB resolution and is designed to inject controlled offsets directly into the feedback node of standard DC/DC converters. This enables closed-loop, autonomous margining (e.g., ±5%) without external op-amps or digital potentiometers-verified across temperature and load conditions per datasheet Table 4.
How does the ADM1266ACPZ-R7 handle power loss or brownout events?
During brownout, the ADM1266ACPZ-R7 leverages its AVDD_CAP reservoir capacitor (≥68 µF recommended) to maintain operation after VH1/VH2 drop below regulation threshold. While powered by this stored energy, it triggers black-box EEPROM writes capturing fault voltage, timestamp, and state-ensuring forensic data survives uncontrolled shutdown. The device also supports automatic fallback to backup configuration memory if corruption is detected during boot.
Is the ADM1266ACPZ-R7 pin-compatible with earlier revisions or other Analog Devices sequencers?
No, the ADM1266ACPZ-R7 is not pin-compatible with earlier Analog Devices sequencers such as the ADM1166 or ADM1262. Its 64-lead LFCSP package, PDIO/GPIO allocation, DAC placement, and IDB interface pins are unique to the ADM1266 family. Migration requires PCB layout revision and firmware reconfiguration-even though functional overlap exists in sequencing capability.
What development tools are required to configure and deploy the ADM1266ACPZ-R7?
Configuration of the ADM1266ACPZ-R7 is performed exclusively via Analog Devices' ADI Power Studio GUI-a Windows-based tool that generates binary configuration files loaded over PMBus. No JTAG or SWD debug interface is exposed; all sequencing logic, fault responses, and DAC settings are defined visually in the GUI and compiled into firmware-executable state machines. Evaluation board EVAL-ADM1266EBZ is required for initial validation.
ADM1266ACPZ-R7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 64-WFQFN Exposed Pad, CSP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Sequencer
- Number of Voltages Monitored:
- 17
- Voltage - Threshold:
- Adjustable/Selectable
- Output:
- Open Drain, Push-Pull
- Reset:
- -
- Reset Timeout:
- -
- Operating Temperature:
- -40°C ~ 85°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 64-LFCSP (9x9)
ADM1266ACPZ-R7 FAQ
1.How can I place an order for ADM1266ACPZ-R7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADM1266ACPZ-R7 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for ADM1266ACPZ-R7 reliable?
The price and inventory of ADM1266ACPZ-R7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADM1266ACPZ-R7 is usually 5 days.
3.What payment methods are accepted for ADM1266ACPZ-R7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADM1266ACPZ-R7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADM1266ACPZ-R7?
ADM1266ACPZ-R7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADM1266ACPZ-R7 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for ADM1266ACPZ-R7?
For technical support, including ADM1266ACPZ-R7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADM1266ACPZ-R7 requirements.
6.How does Aetrix verify that ADM1266ACPZ-R7 is sourced from the original manufacturer or authorized distributors?
All ADM1266ACPZ-R7 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that ADM1266ACPZ-R7 meets industry standards.
7.What is the process for return or replacement of ADM1266ACPZ-R7?
All ADM1266ACPZ-R7 units undergo pre-shipment inspection (PSI). If there is an issue with ADM1266ACPZ-R7, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The ADM1266ACPZ-R7 part is unused and in its original packaging.
Return procedure for ADM1266ACPZ-R7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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