Analog Devices Inc. ADP1031ACPZ-5-R7

Overview

ADP1031ACPZ-5-R7 from Analog Devices is a three-channel isolated micropower management unit (PMU) integrating flyback, buck, and inverting dc-to-dc regulators with seven digital isolators. It delivers factory-programmed 21 V (VOUT1), 5.15 V (VOUT2), and adjustable −24 V to −5 V (VOUT3) outputs, supports 4.5 V–60 V input, and operates across −40°C to +125°C - enabling compact, high-reliability power and signal isolation in industrial process controllers.

For engineers reviewing the ADP1031ACPZ-5-R7 datasheet, ADP1031ACPZ-5-R7 pinout, ADP1031ACPZ-5-R7 application, or ADP1031ACPZ-5-R7 equivalent, this device serves as a single-chip solution for simultaneous isolated power rail generation and SPI/data channel isolation in safety-critical field-side interfaces where space, thermal margin, and EMI control are constrained.

Technical Context

The ADP1031ACPZ-5-R7 implements three phase-shifted switching regulators: a flyback regulator (250 kHz nominal, 235–265 kHz range) with integrated 3 Ω FET and 280–320 mA current limit; a buck regulator (125 kHz nominal) delivering fixed 5.15 V output with ±1.5% accuracy; and an inverting regulator (125 kHz nominal) generating −24 V to −5 V with 0.8 V feedback reference and ±1.5% feedback accuracy.

Its seven iCoupler® digital isolators include four high-speed SPI channels (16.6 MHz clock rate, 7–15 ns propagation delay, <100 ps rms jitter at 3.3 V) and three 100 kbps general-purpose GPIO isolators, all sharing 565 V_PEAK reinforced insulation per DIN V VDE 0884-10 and rated for 2500 V_rms isolation (1 min).

Key Specifications

Pinout & Package

ADP1031ACPZ-5-R7 is housed in a 9 mm × 7 mm, 41-lead LFCSP package with three galvanically isolated domains: Field Power (VINP, SWP, PGNDP), Master (MVDD, MCK, MI, MSS, MO), and Slave (SVDD1/SVDD2, VOUT1/VOUT2/VOUT3, SCK/SSS/SI/SO, SGPO1/SGPO2/SGPI3). Pin 1 is located at top-left per JEDEC-standard marking; pins 24–26 are DNC (do not connect); EPGNDM/EPGND2/EPGNDP are internally tied to MGND/SGND/PGNDP respectively.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADUM6421AARWZ and ISOW7841DWER, ADP1031ACPZ-5-R7 uniquely combines triple isolated power rails (including factory-set 21 V and 5.15 V) with seven high-performance isolators in one package, enabling complete field-side power and data isolation without external magnetics or discrete isolators - reducing design cycle time and PCB area by ≥30%.

Availability

ADP1031ACPZ-5-R7 is available at Aetrix Electronics and suitable for industrial process controllers, isolated data acquisition nodes, motor drive feedback interfaces, and smart field transmitters requiring stable component supply under extended temperature and high-reliability conditions.

Supply support for ADP1031ACPZ-5-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 ADP1031 product line was designed specifically for industrial field-side power and signal isolation, targeting applications where regulatory compliance (UL/VDE/CSA), small footprint, and multi-rail flexibility are critical - bridging the gap between discrete isolated power solutions and monolithic isolated PMUs.

FAQ

What output voltages does the ADP1031ACPZ-5-R7 provide?

The ADP1031ACPZ-5-R7 provides three isolated output voltages: a factory-programmed 21 V (VOUT1) from its flyback regulator, a fixed 5.15 V (VOUT2) from its buck regulator, and an adjustable negative output (VOUT3) ranging from −24 V to −5 V via external feedback resistors on FB3. These outputs are fully independent and galvanically isolated per DIN V VDE 0884-10.

Does the ADP1031ACPZ-5-R7 require an external transformer?

Yes, the ADP1031ACPZ-5-R7 requires an external 1:1 turns ratio transformer for its flyback regulator - such as the recommended Coilcraft 750316743. The IC integrates the primary-side switch and controller but relies on the external transformer to establish isolation and deliver energy to the secondary-side rails (VOUT1, VOUT2, VOUT3).

How many isolated communication channels does the ADP1031ACPZ-5-R7 support?

The ADP1031ACPZ-5-R7 integrates seven digital isolators: four high-speed SPI channels (MCK/MO/MI/MSS ↔ SCK/SI/SO/SSS) supporting up to 16.6 MHz clock rates, and three general-purpose 100 kbps GPIO channels (MGPI1/MGPI2/MGPO3 ↔ SGPI3/SGPO1/SGPO2), all sharing the same reinforced insulation barrier.

What safety certifications apply to the ADP1031ACPZ-5-R7?

The ADP1031ACPZ-5-R7 carries pending certifications for UL 1577 (2500 V_rms, 1 min), CSA Component Acceptance Notice 5A, and VDE 0884-10 (VIORM = 565 V_PEAK). It meets CISPR11 Class B radiated emissions and supports basic insulation at 300 V_rms per IEC 61010-1, making it suitable for industrial measurement and control equipment.

Can the ADP1031ACPZ-5-R7 operate with an external synchronization clock?

Yes, the ADP1031ACPZ-5-R7 accepts an external clock on the SYNC pin (Pin 14) to synchronize switching frequencies. When driven with a 500 kHz external signal, the flyback regulator runs at 250 kHz and buck/inverting regulators at 125 kHz - easing EMI filtering in noise-sensitive applications such as precision data acquisition systems using the ADP1031ACPZ-5-R7.