Analog Devices Inc. ADM1064ACPZ

Overview

ADM1064ACPZ from Analog Devices is a configurable supervisory and sequencing IC for multivoltage systems, integrating 10 supply fault detectors (±1.0% accuracy across temperature), a 12-bit SAR ADC for voltage readback of up to 12 channels, and 10 programmable driver outputs (PDOs) with dual-mode operation (LV logic or HV FET gate drive). It enables precise power-up/down sequencing in DSP/FPGA boards.

For engineers reviewing the ADM1064ACPZ datasheet, ADM1064ACPZ pinout, ADM1064ACPZ application, or ADM1064ACPZ equivalent, key selection considerations include its 40-lead LFCSP package, SMBus programmability, charge-pumped high-voltage PDO capability (up to 14 V), 0.573–14.4 V supervision range, and integrated EEPROM for configuration persistence.

Technical Context

The ADM1064ACPZ implements a state-machine-based Sequencing Engine (SE) supporting up to 63 programmable states, enabling conditional output transitions based on input events (e.g., supply OK, fault, timeout). Its architecture separates analog supervision (10 SFDs with selectable attenuation) from digital control (SMBus interface, EEPROM-configurable logic).

Power is derived from the highest active supply among VH (3.0–14.4 V) or VPx (3.0–6.0 V), regulated internally to VDDCAP (2.7–5.4 V), with built-in brownout resilience via 10 μF decoupling. The 12-bit ADC uses an internal 2.048 V reference (REFOUT) or external REFIN, achieving ±2.5 LSB INL and 0.44 ms per conversion.

Key Specifications

Pinout & Package

The ADM1064ACPZ is housed in a 40-lead Lead Frame Chip Scale Package (LFCSP) with exposed pad (NC, for mechanical stability only). Pin functions are validated per Analog Devices Rev. E datasheet Figures 3 and Table 4.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADM1066ACPZ, the ADM1064ACPZ trades 1-bit ADC resolution and watchdog independence for lower cost and proven maturity in volume telecom deployments; versus TPS40400RHLR, it delivers autonomous 10-rail supervision with integrated telemetry-eliminating host dependency and reducing BOM count.

Availability

ADM1064ACPZ is available at Aetrix Electronics and suitable for server/routers, multivoltage system line cards, DSP/FPGA supply sequencing, in-circuit testing of margined supplies, and central office systems requiring stable component supply and long-term lifecycle support.

Supply support for ADM1064ACPZ 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 instrumentation, industrial, communications, and automotive markets.

The ADM1064ACPZ belongs to Analog Devices' Super Sequencer® family, designed specifically for autonomous, high-accuracy power supply monitoring and sequencing in complex multirail systems such as telecom infrastructure and enterprise computing platforms.

FAQ

What is the maximum input voltage the ADM1064ACPZ can supervise on its VH pin?

The ADM1064ACPZ supports supervision of up to 14.4 V on the VH pin when configured in high-range mode, with ±0.05% input attenuator error. Absolute maximum rating is 16 V, but functional supervision is limited to 14.4 V per datasheet Table 1. This enables direct monitoring of 12 V backplane supplies using appropriate external resistive dividers.

Does the ADM1064ACPZ require an external reference for its 12-bit ADC to achieve specified accuracy?

No-the ADM1064ACPZ includes an internal 2.048 V ±0.25% reference (REFOUT) that can be routed directly to REFIN for ADC operation. Using this internal reference achieves ±1% absolute accuracy across temperature. An external reference may improve performance but is not required for datasheet-specified ADC accuracy.

How many programmable driver outputs does the ADM1064ACPZ have, and what are their voltage capabilities?

The ADM1064ACPZ has 10 programmable driver outputs (PDO1–PDO10). PDO1–PDO6 support charge-pumped high-voltage mode (up to 14 V at 20 μA), suitable for driving N-FET gates. All 10 PDOs support standard logic-level modes: push-pull (to VDDCAP or VPx), open-collector, or weak pull-up-providing flexibility for enabling DC/DC converters, LDOs, or status LEDs.

Can the ADM1064ACPZ operate autonomously without a host processor?

Yes-the ADM1064ACPZ executes sequencing and supervision autonomously using its internal Sequencing Engine (SE) and EEPROM-stored configuration. It requires no host intervention after power-up; SMBus is used only for initial programming or runtime updates. Fault handling, state transitions, and ADC readback occur independently.

What package type is used for the ADM1064ACPZ, and does it include thermal enhancement features?

The ADM1064ACPZ uses a 40-lead LFCSP (6 mm × 6 mm) with exposed pad. The exposed pad is a no-connect (NC) but should be soldered to the PCB for improved mechanical stability and thermal dissipation. Its θJA of 25°C/W (per Table 3) confirms effective thermal performance in compact, high-power-density applications like line cards.