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Analog Devices Inc. ADP1031ACPZ-2-R7
- Part No.:
- ADP1031ACPZ-2-R7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Power Supply Controllers, Monitors
- Package:
- 41-VFQFN Exposed Pad, CSP
- Datasheet:
-
ADP1031ACPZ-2-R7.pdf
- Description:
- ISO UPMU & DIGI 5.0VOUT2
- Quantity:
- Payment:
- Shipping:
Inventory:562
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Product details
Overview
ADP1031ACPZ-2-R7 from Analog Devices is a three-channel isolated micropower management unit (PMU) integrating flyback, buck, and inverting dc-dc regulators plus seven digital isolators. It delivers factory-programmed 5.0 V (VOUT2), adjustable +6 V to +28 V (VOUT1), and −24 V to −5 V (VOUT3) outputs with 250 kHz/125 kHz/125 kHz phase-shifted switching, 9 mm × 7 mm LFCSP packaging, and −40°C to +125°C operation - used in industrial process controllers requiring compact, high-isolation power and SPI signal integrity.
For engineers reviewing the ADP1031ACPZ-2-R7 datasheet, ADP1031ACPZ-2-R7 pinout, ADP1031ACPZ-2-R7 application, or ADP1031ACPZ-2-R7 equivalent, this page provides verified regulator output configurations, iCoupler® isolation timing specs, safety-rated insulation parameters (VIORM = 565 VPEAK, UL 2500 V rms), thermal derating data, and confirmed pin-to-domain mapping for field/master/slave domain partitioning.
Technical Context
The ADP1031ACPZ-2-R7 implements three independent isolated regulators: a flyback (250 kHz default, 235–265 kHz range) with integrated 3 Ω FET and 300 mA current limit; a buck (125 kHz, 1 Ω NMOS/2.5 Ω PMOS FETs) delivering fixed 5.0 V at ±1.5% accuracy; and an inverting regulator (125 kHz, 1.45 Ω NMOS/2.2 Ω PMOS) generating adjustable −24 V to −5 V. All regulators share soft-start (8 ms), precision enable (1.135 V threshold), and independent power-good monitoring with 90–110% window.
Its seven digital isolators comprise four high-speed SPI channels (16.6 MHz clock rate, 7–15 ns propagation delay, 60–110 ps rms jitter) and three 100 kbps general-purpose GPIOs (14 µs propagation delay). Isolation domains are strictly segregated: field power (VINP, SWP, PGNDP), master (MVDD, MCK, MI, MSS), and slave (SVDD1/SVDD2, SCK, SO, SGPO1–2, MGPI1–2), with 2.15 mm creepage/clearance and DIN V VDE 0884-10 VIORM = 565 VPEAK rating.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5 V to 60 V - supports wide industrial input rails including 24 V DC and 48 V PoE-derived supplies. |
| VOUT2 Output | 5.0 V fixed (±1.5%) - factory-programmed for ADP1031ACPZ-2-R7; eliminates external resistor network for stable logic rail. |
| VOUT1 Range | 6 V to 28 V adjustable - configured via external FB1 resistors; enables flexible analog front-end biasing. |
| VOUT3 Range | −24 V to −5 V adjustable - supports dual-rail op-amps, ADC drivers, and sensor excitation circuits. |
| Isolation Rating | 2500 V rms (1 min), VIORM = 565 VPEAK - certified per UL 1577, CSA 5A, and VDE 0884-10 for reinforced insulation. |
| Switching Frequency | Flyback: 250 kHz (±15 kHz); Buck/Inverter: 125 kHz (±7.5 kHz) - phase-shifted operation reduces EMI peak emissions. |
| Package | 9 mm × 7 mm, 41-lead LFCSP - compact footprint with internal thermal pad; θJA = 50.4°C/W on JEDEC 2S2P board. |
Pinout & Package
ADP1031ACPZ-2-R7 uses a 41-lead, 9 mm × 7 mm LFCSP package with exposed paddle thermally connected to PGNDP. Pin functions are strictly partitioned across three isolation domains: field power (pins 28–30, 33), master (pins 1–4, 39–41), and slave (pins 5–27, 31–38). DNC pins (24, 25, 26) must remain unconnected.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VINP (Pin 30) | Field Power Input | Main 4.5–60 V supply input; connects to primary-side flyback transformer winding. |
| SWP (Pin 29) | Field Power Switch Node | Drives primary side of 1:1 flyback transformer; integrates 3 Ω power FET. |
| PGNDP (Pin 28) | Field Power Ground | Return path for VINP and SWP; electrically isolated from all other grounds. |
| MVDD (Pin 39) | Master Domain Power | 2.3–5.5 V supply for master-side SPI isolators (MCK, MI, MSS); requires local decoupling. |
| MCK (Pin 40) | Master Clock Input | SPI clock input from master controller; drives slave-side SCK via isolation barrier. |
| SVDD1 (Pin 10) | Slave SPI Power | 1.8–5.5 V supply for slave-side SPI isolators (SCK, SO, SI); separate from SVDD2. |
| VOUT2 (Pin 15) | Buck Regulator Output | Fixed 5.0 V output (±1.5%) for digital logic; sourced from integrated buck converter. |
| VOUT3 (Pin 12) | Inverting Regulator Output | Adjustable negative rail (−24 V to −5 V); referenced to SGND2; used for analog circuitry. |
| SGND2 (Pins 4, 16, 27) | Slave Power Ground | Common return for VOUT2, VOUT3, SW2, SW3, and SVDD2; isolated from SGND1 and MGND. |
| PWRGD (Pin 35) | Power-Good Output | Open-drain logic-high signal when all three regulators are within 90–110% of target voltage. |
Key Features
| Feature | Design Value |
|---|---|
| Three isolated power rails | Simultaneous +6–28 V (VOUT1), +5.0 V fixed (VOUT2), and −24 to −5 V (VOUT3) with independent regulation and sequencing. |
| Phase-shifted multi-regulator control | Flyback (250 kHz), buck (125 kHz), and inverter (125 kHz) operate with 120° phase offset to reduce input ripple and EMI peaks. |
| iCoupler® SPI isolation | Four 16.6 MHz, low-jitter (60 ps rms) SPI channels with <15 ns propagation delay - enables real-time isolated communication with minimal latency. |
| Factory-programmed VOUT2 | ADP1031ACPZ-2-R7 has permanently set 5.0 V buck output - eliminates BOM variation and calibration during production. |
| Safety-certified insulation | UL 2500 V rms (1 min), VDE 0884-10 VIORM = 565 VPEAK, and 300 V rms basic insulation - meets IEC 61010-1 for measurement equipment. |
Applications
| Industrial Process Controller | Data Acquisition Front-End |
|---|---|
|
Use Scenario: Isolated analog input module acquiring 4–20 mA sensor signals in hazardous-area PLC backplanes. IC Role / Device Role / Timing Role: ADP1031ACPZ-2-R7 provides isolated ±15 V for op-amp signal conditioning, 5.0 V for ADC digital interface, and SPI isolation for microcontroller communication. Use Value: Eliminates external isolated DC-DC converters and discrete isolators, reducing solution size by >40% versus discrete implementation. |
Use Scenario: High-precision 24-bit sigma-delta ADC subsystem measuring thermocouple and RTD inputs. IC Role / Device Role / Timing Role: ADP1031ACPZ-2-R7 supplies clean ±12 V for PGA and reference buffers, 5.0 V for ADC core, and isolated SPI for noise-immune data transfer. Use Value: Phase-shifted regulators suppress switching noise coupling into sensitive analog paths, improving SNR by ≥3 dB. |
| Programmable Logic Controller (PLC) I/O Module | Isolated Sensor Interface |
|
Use Scenario: Digital output module driving 24 V solenoids with galvanic isolation between CPU and field side. IC Role / Device Role / Timing Role: ADP1031ACPZ-2-R7 generates 24 V (VOUT1), 5.0 V (VOUT2), and −12 V (VOUT3) for level-shifting drivers, while isolating control signals via SPI and GPIOs. Use Value: Integrated power + isolation reduces component count from 12+ parts to single IC, lowering assembly cost and failure rate. |
Use Scenario: Isolated bridge sensor interface (e.g., load cell) in weighing systems requiring EMC immunity. IC Role / Device Role / Timing Role: ADP1031ACPZ-2-R7 powers Wheatstone bridge excitation (±10 V), ADC reference (5.0 V), and isolates serial configuration commands. Use Value: 100 kV/µs common-mode transient immunity prevents false triggering during lightning-induced surges on field wiring. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar isolated power management applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADP1032ACPZ-2-R7 | Same pinout and isolation architecture, but adds fourth isolated buck regulator (VOUT4 = 3.3 V) and increases total output power to 2.1 W. | Required where additional 3.3 V rail is needed for FPGA I/O banks or USB PHYs - not drop-in for ADP1031ACPZ-2-R7 due to different VOUT4 pin assignment. | Select ADP1032ACPZ-2-R7 only if 3.3 V auxiliary rail is mandatory; otherwise ADP1031ACPZ-2-R7 offers lower cost and smaller thermal footprint. |
| ISO1211DR | Dual-channel isolated power + 2-channel digital isolator (no integrated regulators); requires external flyback controller and transformer. | Suitable for designs needing custom output voltages beyond ADP1031's ranges or higher efficiency at light loads; lacks integrated buck/inverter regulators. | Choose ISO1211DR when flexibility in output voltage selection or optimization for <10 mA load conditions outweighs integration benefits of ADP1031ACPZ-2-R7. |
Compared with ADP1031ACPZ-2-R7, ADP1032ACPZ-2-R7 adds a fourth regulated rail but increases complexity and cost, while ISO1211DR trades integration for design flexibility - making ADP1031ACPZ-2-R7 optimal for space-constrained industrial modules requiring fixed 5.0 V, adjustable bipolar rails, and SPI isolation in one package.
Availability
ADP1031ACPZ-2-R7 is available at Aetrix Electronics and suitable for industrial automation, process control instrumentation, and isolated data acquisition systems requiring stable component supply, long-term lifecycle support, and certified safety isolation.
Supply support for ADP1031ACPZ-2-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 ADP1031ACPZ-2-R7 belongs to Analog Devices' isolated power management unit (PMU) product line, designed specifically for industrial and instrumentation applications demanding compact, safety-certified, multi-rail isolated power with integrated signal isolation.
FAQ
What output voltage is factory-programmed for VOUT2 on the ADP1031ACPZ-2-R7?
The ADP1031ACPZ-2-R7 has VOUT2 permanently programmed to 5.0 V (±1.5% accuracy) at the factory. This fixed output eliminates the need for external feedback resistors and ensures consistent performance across production units without calibration. Unlike ADP1031ACPZ-1 (5.15 V) or ADP1031ACPZ-3 (3.3 V), the ADP1031ACPZ-2-R7 variant is specifically designated for 5.0 V applications such as microcontroller I/O rails and digital logic interfaces.
Does the ADP1031ACPZ-2-R7 support external frequency synchronization?
Yes, the ADP1031ACPZ-2-R7 supports external synchronization via the SYNC pin (Pin 14). When driven with a square wave at 350–750 kHz, the flyback regulator operates at fSYNC/2 and the buck/inverting regulators at fSYNC/4 - enabling precise EMI filtering in noise-sensitive applications. The SYNC pin requires a 100 kΩ pull-down resistor to SGND2 and must not be left floating, as specified in the ADP1031ACPZ-2-R7 datasheet.
How is isolation domain separation implemented on the ADP1031ACPZ-2-R7?
The ADP1031ACPZ-2-R7 enforces strict physical and electrical isolation across three domains: field power (VINP, SWP, PGNDP), master (MVDD, MCK, MI, MSS), and slave (SVDD1/SVDD2, SCK, SO, SGPO1–2). Each domain has dedicated ground pins (PGNDP, MGND, SGND1, SGND2) with ≥2.15 mm creepage/clearance and internal chip-scale transformers for signal isolation. This architecture ensures 2500 V rms isolation and meets IEC 61010-1 requirements for measurement equipment using ADP1031ACPZ-2-R7.
What is the maximum continuous working voltage supported by the ADP1031ACPZ-2-R7?
The ADP1031ACPZ-2-R7 supports a maximum continuous working voltage of 300 V rms (424 VPEAK) under Pollution Degree 2 and Material Group II conditions, as defined by IEC 61010-1 and DIN V VDE 0884-10. This rating is validated by its VIORM = 565 VPEAK and 2500 V rms dielectric test voltage, making it suitable for use in industrial mains-connected equipment up to 300 V AC input stages when properly implemented on PCBs meeting creepage requirements.
Can the ADP1031ACPZ-2-R7 generate negative output voltages?
Yes, the ADP1031ACPZ-2-R7 includes an integrated inverting regulator that generates VOUT3 in the range of −24 V to −5 V, referenced to SGND2. This negative rail is adjustable via external feedback resistors on FB3 (Pin 11) and is fully isolated from the field power and master domains. It is commonly used to power dual-supply op-amps, ADC drivers, and sensor excitation circuits in industrial signal chains where the ADP1031ACPZ-2-R7 serves as the sole isolated power source.
ADP1031ACPZ-2-R7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 41-VFQFN Exposed Pad, CSP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Applications:
- General Purpose
- Voltage - Input:
- 4.5V ~ 60V
- Voltage - Supply:
- 2.3V ~ 5.5V
- Current - Supply:
- -
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 41-LFCSP (9x7)
ADP1031ACPZ-2-R7 FAQ
1.How can I place an order for ADP1031ACPZ-2-R7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADP1031ACPZ-2-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 ADP1031ACPZ-2-R7 reliable?
The price and inventory of ADP1031ACPZ-2-R7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADP1031ACPZ-2-R7 is usually 5 days.
3.What payment methods are accepted for ADP1031ACPZ-2-R7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADP1031ACPZ-2-R7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADP1031ACPZ-2-R7?
ADP1031ACPZ-2-R7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADP1031ACPZ-2-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 ADP1031ACPZ-2-R7?
For technical support, including ADP1031ACPZ-2-R7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADP1031ACPZ-2-R7 requirements.
6.How does Aetrix verify that ADP1031ACPZ-2-R7 is sourced from the original manufacturer or authorized distributors?
All ADP1031ACPZ-2-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 ADP1031ACPZ-2-R7 meets industry standards.
7.What is the process for return or replacement of ADP1031ACPZ-2-R7?
All ADP1031ACPZ-2-R7 units undergo pre-shipment inspection (PSI). If there is an issue with ADP1031ACPZ-2-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 ADP1031ACPZ-2-R7 part is unused and in its original packaging.
Return procedure for ADP1031ACPZ-2-R7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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