Analog Devices Inc. ADM1260ACPZ-RL7

Overview

ADM1260ACPZ-RL7 from Analog Devices is a configurable supervisory and sequencing IC for multirail power systems, integrating 10 supply fault detectors (<1.0% accuracy across temperature), a 12-bit SAR ADC, six 8-bit DACs for closed-loop voltage margining, and a state-machine-based sequencing engine supporting up to 61 states. It enables precise control of power-up/down sequences in DSP/FPGA supply rails.

For engineers reviewing the ADM1260ACPZ-RL7 datasheet, ADM1260ACPZ-RL7 pinout, ADM1260ACPZ-RL7 application, or ADM1260ACPZ-RL7 equivalent, key selection criteria include interchip bus (ICB) scalability to 40 supplies, nonvolatile black box fault recording (16-event depth), charge-pumped high-voltage PDO outputs (up to 14 V), and SMBus programmability with ADI Power Studio™.

Technical Context

The ADM1260ACPZ-RL7 implements a deterministic sequencing engine (SE) with conditional state transitions triggered by input events (e.g., supply OK, fault, timeout), enabling complex board-level sequencing including power-up, power-down, and fault recovery paths. Its SE supports watchdog integration and SMBus-triggered software-controlled jumps.

It features dual-mode programmable driver outputs (PDOs): six support internally charge-pumped HV drive (up to 14 V, 20 μA avg) for N-FET gate control, while all ten support LV logic-level outputs (push-pull, open-collector, or weak pull-up to VPx/VDDCAP). The ICB interface allows daisy-chained coordination of up to four ADM1260 devices.

Key Specifications

Pinout & Package

ADM1260ACPZ-RL7 is housed in a 40-lead, 6 mm × 6 mm LFCSP package with exposed pad (NC, recommended soldered for mechanical stability). Pin functions are validated per Analog Devices' Rev. 0 datasheet Figure 3 and Table 4.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADM1260ACPZ-RL7, ADM1266ACPZ-RL7 extends supervision capacity and ADC resolution while maintaining pin compatibility and ICB functionality, whereas TPS65400PAPR trades advanced sequencing features for integrated power conversion-making it suitable only for simpler, self-contained power domains.

Availability

ADM1260ACPZ-RL7 is available at Aetrix Electronics and suitable for central office systems, servers/routers, and multivoltage line cards requiring stable component supply, long-term lifecycle support, and traceable sourcing for industrial and telecom deployments.

Supply support for ADM1260ACPZ-RL7 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 leader specializing in high-performance analog, mixed-signal, and digital signal processing technologies for precision measurement and power management.

The ADM1260ACPZ-RL7 belongs to Analog Devices' Super Sequencer® product line, engineered specifically for robust, scalable power sequencing and fault-aware supervision in mission-critical multirail infrastructure equipment.

FAQ

What is the primary function of the ADM1260ACPZ-RL7 in a power system?

The ADM1260ACPZ-RL7 serves as a configurable supervisory sequencer that monitors up to 10 voltage rails, enforces precise power-up/down sequences via its 61-state sequencing engine, and provides closed-loop voltage margining using six integrated 8-bit DACs and a 12-bit ADC. It is designed to replace discrete supervisor + sequencer + margining circuitry in complex multirail systems like servers and telecom line cards.

How does the interchip bus (ICB) enhance system scalability with the ADM1260ACPZ-RL7?

The ICB interface allows up to four ADM1260ACPZ-RL7 devices to be daisy-chained, enabling coordinated sequencing across up to 40 supply rails and supervision of up to 37 rails. This eliminates manual timing synchronization between boards and lets ADI Power Studio™ present the network as a single virtual sequencer-critical for large-scale infrastructure where rail count exceeds single-device limits.

Can the ADM1260ACPZ-RL7 drive N-channel MOSFETs directly, and if so, how?

Yes, the ADM1260ACPZ-RL7 can directly drive N-channel MOSFET gates using PDO1 through PDO6 in charge-pumped high-voltage mode, delivering up to 14 V at 20 μA average current. This eliminates external level shifters or gate drivers in high-side switch configurations, simplifying layout and improving reliability in supply enable paths for 12 V or 5 V rails.

What type of nonvolatile memory does the ADM1260ACPZ-RL7 use for fault recording, and what data does it store?

The ADM1260ACPZ-RL7 uses on-chip EEPROM to implement a 16-event nonvolatile black box fault recorder. Each record stores timestamped event data-including fault type (e.g., UVLO on VP2), triggering condition, sequencing engine state, and input status-at the moment of occurrence, even during brownout conditions where external power is lost.

Is the ADM1260ACPZ-RL7 compatible with standard SMBus protocols, and what configuration capabilities does this enable?

Yes, the ADM1260ACPZ-RL7 implements a full SMBus 2.0-compatible interface (400 kHz max clock) for register read/write, EEPROM programming, and real-time monitoring. This enables complete configuration-including sequencing state tables, fault thresholds, DAC outputs, and ICB settings-via ADI Power Studio™ GUI or custom host firmware without requiring dedicated programmers or JTAG interfaces.