Analog Devices Inc. ADP1032ACPZ-4-R7

Overview

ADP1032ACPZ-4-R7 from Analog Devices is a two-channel isolated micropower management unit (PMU) integrating an isolated flyback regulator (24 V fixed output), a buck regulator (5.0 V factory-programmed output), and seven digital isolators (four SPI + three GPIO). It operates from 4.5 V to 60 V input, delivers up to 2.5 W total isolated power, and supports −40°C to +125°C junction temperature - used in industrial PLC I/O modules requiring galvanic separation of field-side power and digital signals.

For engineers reviewing the ADP1032ACPZ-4-R7 datasheet, ADP1032ACPZ-4-R7 pinout, ADP1032ACPZ-4-R7 application, or ADP1032ACPZ-4-R7 equivalent, this page provides verified technical context, validated pin functions, confirmed isolation specifications (2500 V rms, VIORM = 565 VPEAK), real-world efficiency data (86.5% at full load), and precise alternative part comparisons for industrial power and signal isolation design.

Technical Context

The ADP1032ACPZ-4-R7 implements dual-isolated regulation: its flyback regulator delivers a fixed 24 V output (VOUT1) with 440 mA current limit and 250 kHz nominal switching frequency, while its buck regulator supplies a factory-set 5.0 V (VOUT2) with 300 mA current limit and 125 kHz switching frequency. Both regulators feature internal compensation, soft-start timers (8 ms), and phase-shifted operation to reduce EMI.

Its seven iCoupler® digital isolators include four high-speed SPI channels (16.6 MHz max clock rate, 7–15 ns propagation delay) and three 100 kbps general-purpose GPIO isolators. All isolators use chip-scale transformer technology with 100 kV/µs common-mode transient immunity and are partitioned across field power, master, and slave domains with 2.15 mm minimum creepage/clearance.

Key Specifications

Pinout & Package

ADP1032ACPZ-4-R7 uses a 41-lead, 9 mm × 7 mm LFCSP package with three isolated ground domains (field power PGNDP, master MGND, slave SGND1/SGND2) and exposed thermal pads internally connected to respective domain grounds (EPGNDP → PGNDP, EPGNDM → MGND, EPGND2 → SGND2).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar isolated power and signal isolation applications.

Compared with ADP1032ACPZ-4-R7, ADP1031ACPZ-R7 offers identical functionality at reduced power capability and cost, while ISO1212DWLR provides higher-speed isolation but zero power integration - making ADP1032ACPZ-4-R7 uniquely suited for space-constrained industrial nodes needing both regulated isolated power and deterministic SPI/GPIO isolation in one package.

Availability

ADP1032ACPZ-4-R7 is available at Aetrix Electronics and suitable for industrial automation, process control instrumentation, and isolated sensor interface designs requiring stable component supply, long-term lifecycle assurance, and certified safety isolation.

Supply support for ADP1032ACPZ-4-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, headquartered in Norwood, MA, with R&D and manufacturing operations worldwide.

The ADP1032ACPZ-4-R7 belongs to Analog Devices' isolated power management unit (PMU) product line, engineered specifically for industrial I/O modules, PLCs, and process controllers requiring integrated isolated power generation and high-integrity digital signal isolation in a single compact package.

FAQ

What output voltages does the ADP1032ACPZ-4-R7 provide?

The ADP1032ACPZ-4-R7 provides two isolated outputs: a fixed 24 V (±1.5%) on VOUT1 for field-side power, and a factory-programmed 5.0 V (±1.5%) on VOUT2 for slave-domain logic. These values are hard-coded per the -4 suffix and cannot be adjusted externally - unlike the adjustable -1/-2/-3 variants which support 6 V to 28 V VOUT1 and selectable VOUT2 options.

How does the SLEW pin affect ADP1032ACPZ-4-R7 performance?

The SLEW pin (Pin 32) configures the flyback switch node (SWP) slew rate: open-circuit enables fastest edges (best efficiency), connection to VINP sets normal slew (balanced EMI/loss), and connection to GNDP gives slowest edges (lowest EMI). This direct hardware control allows tuning without firmware changes - critical for meeting CISPR11 Class B radiated emissions in final system validation.

Can ADP1032ACPZ-4-R7 replace discrete flyback controllers and digital isolators?

Yes - ADP1032ACPZ-4-R7 integrates a complete isolated flyback regulator (with 440 mA switch), buck regulator (300 mA switch), and seven iCoupler® isolators. In typical PLC I/O designs, it replaces at least one flyback controller IC, one buck regulator IC, six discrete digital isolators, and associated passives - reducing bill-of-materials count, PCB area, and inter-stage noise coupling risks.

What safety certifications apply to ADP1032ACPZ-4-R7?

ADP1032ACPZ-4-R7 carries pending certifications for UL 1577 (2500 V rms, 1 min), CSA Component Acceptance Notice 5A, and VDE 0884-10 (VIORM = 565 VPEAK, reinforced insulation). Its 2.15 mm creepage/clearance and CTI >400 V material meet IEC 61010-1 requirements for measurement category II, 300 V rms working voltage applications.

Does ADP1032ACPZ-4-R7 support external synchronization?

Yes - the SYNC pin (Pin 14) accepts an external clock from 350 kHz to 750 kHz. When driven, the flyback regulator runs at fSYNC/2 and the buck regulator at fSYNC/4, enabling precise EMI frequency placement away from sensitive bands (e.g., wireless comms or audio). The pin requires a 100 kΩ pull-down to SGND2 and must never be left floating.