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Analog Devices Inc./Maxim Integrated MAX22530AWE+
- Part No.:
- MAX22530AWE+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
MAX22530AWE+.pdf
- Description:
- IC ADC 12BIT SAR 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,699
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Product details
Overview
MAX22530AWE+ from Analog Devices is a galvanically isolated, 4-channel, multiplexed, 12-bit analog-to-digital converter with integrated isolated DC-DC power supply, designed for high-voltage binary input monitoring in industrial field-side applications. It delivers 20ksps per-channel throughput, ±1% typical internal reference accuracy, and 5kVRMS isolation rating in a 16-pin wide SOIC package with 8mm creepage/clearance.
For engineers reviewing the MAX22530AWE+ datasheet, MAX22530AWE+ pinout, MAX22530AWE+ application, or MAX22530AWE+ equivalent, this device supports SPI interface with CRC, programmable threshold comparators per channel, field-side self-powered diagnostics, and robust CMTI of 50kV/µs - critical for substation automation, distribution automation, and high-reliability process control systems.
Technical Context
The MAX22530AWE+ implements a fully isolated signal chain: its on-chip isolated DC-DC converter powers all field-side circuitry (VDDF), enabling continuous ADC functionality and diagnostics even with no external input signal. The 12-bit SAR ADC core digitizes four analog inputs sequentially at up to 20ksps per channel, with optional 4-sample moving-average filtering.
Each channel features an independent comparator with programmable high/low thresholds and two operational modes (digital input or digital status), driving dedicated COUT_ outputs with <75µs latency (filtering disabled). Communication occurs via a 10MHz SPI interface supporting CRC error detection, register-based configuration, and interrupt reporting for threshold crossings and fault conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| ADC Resolution | 12-bit SAR architecture providing 4096 discrete output levels for precise voltage quantization. |
| Sample Rate | 20ksps per channel (typical), enabling real-time monitoring of fast-changing field signals. |
| Isolation Rating | 5kVRMS withstand voltage for 60 seconds - meets UL1577 and CSA Bulletin 5A safety standards. |
| CMTI | 50kV/µs common-mode transient immunity - ensures reliable operation in noisy high-voltage environments. |
| Internal Reference | 1.8V ±1% (typ) precision reference with 50ppm/°C drift - eliminates need for external reference components. |
| Operating Temperature | -40°C to +125°C ambient range - qualified for harsh industrial and utility-grade deployments. |
| Input Voltage Range | 0V to 1.8V full-scale - compatible with standard industrial sensor outputs and scaled high-voltage dividers. |
Pinout & Package
MAX22530AWE+ is housed in a 16-pin wide SOIC package (W16MS+14 outline) with 8mm creepage and clearance, Group II CTI (>400) material, and 5kVRMS isolation rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 15, 16 | AIN1–AIN4 | Analog input channels for field-side voltage sensing; each supports 0V–1.8V range with ±600nA leakage. |
| 3 | REF | Reference capacitor connection node for 1.8V internal reference; requires 1μF||0.01μF bypass to AGND. |
| 4 | AGND | Analog ground reference for ADC front-end and reference circuitry - separate from GNDF and GNDL. |
| 5 | VDDL | Logic-side supply (1.71V–5.5V); powers SPI interface, registers, and logic; bypass to GNDL. |
| 6 | VDDPL | Isolated DC-DC primary-side supply (3.0V–5.5V); powers the transformer driver; bypass to GNDL. |
| 7 | VDDF | Field-side isolated supply output (2.7V–5.5V); powers ADC, comparators, and front-end; no external load allowed. |
| 8 | GNDF | Field-side ground for VDDF, comparators, and digital logic - isolated from AGND and GNDL. |
| 9 | GNDL | Logic-side ground for VDDL, VDDPL, SPI, and INT/CS/SCLK/SDI/SDO - common return for digital interface. |
| 10, 11 | CS, SCLK | SPI chip select and clock inputs - support up to 10MHz operation with 20ns setup/hold timing. |
| 12 | SDO | SPI data output - tri-state capable, driven high/low with 4mA sink/source capability. |
| 13 | SDI | SPI data input - accepts logic-high ≥0.7×VDDL and logic-low ≤0.3×VDDL with 2pF input capacitance. |
| 14 | INT | Open-drain interrupt output - asserts low when any comparator crosses programmed threshold or fault occurs. |
Key Features
| Feature | Design Value |
|---|---|
| Field-side self-powered operation | Integrated isolated DC-DC converter eliminates need for external field-side power supply, reducing system BOM and enabling diagnostics with zero input signal. |
| Programmable per-channel comparators | Independent upper/lower threshold registers per AIN enable flexible digital input emulation and hysteresis control without external components. |
| SPI with CRC error detection | Configurable CRC byte on read/write transfers detects communication corruption in electrically noisy industrial environments. |
| Continuous field-side diagnostics | On-chip ADC functionality monitoring, power-up validation, and loss-of-data-stream detection ensure long-term reliability in unattended installations. |
| High CMTI and surge immunity | 50kV/µs CMTI plus ±7.2kV IEC 61000-4-5 surge protection on AIN pins enables direct connection to high-voltage sensor interfaces. |
Applications
| Substation Automation | Distribution Automation |
|---|---|
Use Scenario: Monitoring breaker status, relay contacts, and auxiliary voltage signals in outdoor high-voltage switchgear cabinets. IC Role / Device Role / Timing Role: Isolated 4-channel ADC digitizes binary inputs while maintaining galvanic separation between 10kV+ field circuits and 3.3V logic-side MCU. Use Value: Enables single-chip replacement of optocoupler + resistor divider + comparator solutions, reducing board space by >40% and eliminating calibration drift. |
Use Scenario: Remote terminal unit (RTU) input modules collecting line voltage presence, fuse status, and capacitor bank switching feedback across medium-voltage feeders. IC Role / Device Role / Timing Role: Field-side self-powered ADC provides deterministic 75µs comparator response for fast trip coordination and event logging. Use Value: Eliminates dependency on external field power supplies, improving uptime during brownouts and simplifying cabinet wiring. |
| Process Automation | Motion Control |
Use Scenario: PLC input modules acquiring analog sensor outputs (e.g., pressure, temperature transmitters) in hazardous area boundary zones. IC Role / Device Role / Timing Role: Isolated ADC with integrated 1.8V reference converts scaled 0–10V/4–20mA signals while rejecting ground-loop noise and EMI. Use Value: Achieves ±0.2% gain error and ±0.1%FS offset error over -40°C to +125°C - meeting SIL-2 functional safety signal conditioning requirements. |
Use Scenario: Servo drive status monitoring of motor phase current sense, brake engagement, and thermal shutdown flags in industrial robots. IC Role / Device Role / Timing Role: Four independent comparators with programmable thresholds detect overcurrent, overtemperature, and position feedback faults with <300µs latency (with filtering). Use Value: Reduces fault detection time versus microcontroller-based polling, enabling faster safe torque off (STO) response per IEC 61800-5-2. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar isolated multichannel ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADI AD7403BRIZ-RL7 | 2-channel, 16-bit Σ-Δ isolated ADC; no integrated DC-DC; requires external isolated supply; 20MHz SPI; 20kV/µs CMTI. | Better resolution and noise performance for precision current sensing, but lacks field-side self-power and comparator outputs. | Select AD7403BRIZ-RL7 only when higher resolution and lower noise are required and external isolated power is available. |
| Texas Instruments AMC1305L25DW | 2-channel, 16-bit isolated delta-sigma modulator; no ADC core or SPI interface; outputs bitstream requiring external digital filter; 15kV/µs CMTI. | Targeted for motor control current loops with external DDC filtering; lacks integrated thresholds, diagnostics, and multi-channel flexibility. | Choose AMC1305L25DW for high-fidelity current measurement where FPGA/DSP resources exist for decimation filtering. |
Compared with AD7403BRIZ-RL7 and AMC1305L25DW, the MAX22530AWE+ uniquely integrates field-side power, 4-channel 12-bit conversion, per-channel comparators, and diagnostics in one package - making it optimal for binary input consolidation and condition monitoring where simplicity, reliability, and reduced component count are prioritized over ultra-high resolution.
Availability
MAX22530AWE+ is available at Aetrix Electronics and suitable for substation automation, distribution automation, and process automation requiring stable component supply, long-term lifecycle support, and compliance with UL/cUL safety certifications.
Supply support for MAX22530AWE+ 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, serving industrial, automotive, communications, and healthcare markets.
The MAX22530AWE+ belongs to the MAXSafe™ family of galvanically isolated data acquisition ICs, engineered specifically for high-reliability field-side monitoring in utility infrastructure and industrial control systems where safety, diagnostic integrity, and long-term stability are mandatory.
FAQ
What is the isolation voltage rating of the MAX22530AWE+ and how is it certified?
The MAX22530AWE+ provides 5kVRMS isolation for 60 seconds per UL1577 and CSA Bulletin 5A standards. It achieves this rating in its 16-pin wide SOIC package with 8mm creepage and clearance, Group II CTI material (>400), and is 100% production tested at 120% of VISO (6kVRMS) for 1 second. This certification validates its suitability for reinforced insulation in high-voltage industrial applications.
Does the MAX22530AWE+ require an external power supply on the field side?
No, the MAX22530AWE+ does not require an external field-side power supply. Its integrated isolated DC-DC converter generates VDDF (2.7V–5.5V) from the logic-side VDDPL supply, powering all field-side circuitry including the ADC, comparators, and reference. This self-powered architecture enables field-side diagnostics even when no input signal is present.
How many comparator outputs does the MAX22530AWE+ provide, and what are their response characteristics?
The MAX22530AWE+ provides one shared interrupt output (INT) and no dedicated COUT_ pins - unlike the MAX22531 (2 COUT_) or MAX22532 (4 COUT_). Its comparator logic drives the INT pin, which asserts low when any input crosses its programmed threshold. With filtering disabled, the effective response latency from input step to INT assertion is under 75µs, enabling fast fault detection in time-critical systems.
Can the MAX22530AWE+ operate with a 1.8V logic supply?
Yes, the MAX22530AWE+ supports VDDL from 1.71V to 5.5V, making it fully compatible with 1.8V logic systems. Its SPI interface operates correctly at 1.8V, with VIH ≥ 1.26V and VIL ≤ 0.54V, and output VOH/VOL meet 1.8V CMOS thresholds when sourcing/sinking 4mA. This allows direct interfacing with low-voltage MCUs without level-shifting.
What diagnostic capabilities does the MAX22530AWE+ offer for field-side reliability monitoring?
The MAX22530AWE+ provides three key field-side diagnostics: (1) ADC functionality error detection confirms proper conversion operation; (2) continuous field-side power monitoring verifies VDDF stability; and (3) communication self-diagnostics check SPI framing, CRC, and data stream continuity. These features are accessible via dedicated status registers and reported through the INT pin, enabling predictive maintenance in remote installations.
MAX22530AWE+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 16-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Number of Bits:
- 12
- Sampling Rate (Per Second):
- 22k
- Number of Inputs:
- 4
- Input Type:
- Single Ended
- Data Interface:
- SPI
- Configuration:
- ADC
- Ratio - S/H:ADC:
- 0:1
- Number of A/D Converters:
- 1
- Architecture:
- SAR
- Reference Type:
- External, Internal
- Voltage - Supply, Analog:
- 1.71V ~ 5.5V
- Voltage - Supply, Digital:
- 1.71V ~ 5.5V
- Features:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Supplier Device Package:
- 16-SOIC
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
MAX22530AWE+ FAQ
1.How can I place an order for MAX22530AWE+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX22530AWE+ 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 MAX22530AWE+ reliable?
The price and inventory of MAX22530AWE+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX22530AWE+ is usually 5 days.
3.What payment methods are accepted for MAX22530AWE+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX22530AWE+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX22530AWE+?
MAX22530AWE+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX22530AWE+ 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 MAX22530AWE+?
For technical support, including MAX22530AWE+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX22530AWE+ requirements.
6.How does Aetrix verify that MAX22530AWE+ is sourced from the original manufacturer or authorized distributors?
All MAX22530AWE+ 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 MAX22530AWE+ meets industry standards.
7.What is the process for return or replacement of MAX22530AWE+?
All MAX22530AWE+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX22530AWE+, 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 MAX22530AWE+ part is unused and in its original packaging.
Return procedure for MAX22530AWE+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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