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Analog Devices Inc./Maxim Integrated MAX22820EAWA+T
- Part No.:
- MAX22820EAWA+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Digital Isolators
- Package:
- 8-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
MAX22820EAWA+T.pdf
- Description:
- 2-CHANNEL, 3.0KVRMS, DIGITAL GAL
- Quantity:
- Payment:
- Shipping:
Inventory:1,660
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Product details
Overview
MAX22820EAWA+T from Analog Devices is a reinforced, ultra-low-power, two-channel digital isolator in 8-pin wide SOIC package with 8mm creepage/clearance, rated for 5kVRMS isolation (60s), 848VRMS working voltage, and 200kV/μs CMTI. It supports bidirectional signal transfer (one channel A→B, one B→A), operates from 1.71V to 5.5V per side, and delivers 10Mbps data rate with 122ns typical propagation delay at 3.3V - used in 4–20mA loop controllers and battery-powered industrial sensors.
For engineers reviewing the MAX22820EAWA+T datasheet, MAX22820EAWA+T pinout, MAX22820EAWA+T application, or MAX22820EAWA+T equivalent, key selection criteria include reinforced 5kVRMS isolation rating, unidirectional channel pairing (IN1→OUT1, IN2←OUT2), ultra-low 15.4μA/channel DC supply current at 3.3V, and compatibility with intrinsic safety (ATEX/IECEx) certified systems.
Technical Context
The MAX22820EAWA+T implements capacitive galvanic isolation using Analog Devices' proprietary process, enabling reinforced insulation with 5kVRMS withstand voltage and 848VRMS continuous working voltage. Its dual-supply architecture (VDDA/GNDA and VDDB/GNDB) supports independent 1.71V–5.5V logic level translation across isolated domains.
It features a 70ns (typ) glitch rejection filter and default-high output behavior, with refresh circuitry ensuring output validity during static input conditions. Propagation delay skew between channels is ≤10ns, and clock jitter RMS is 26.5ps at 500kHz - critical for timing-sensitive isolated communication in compact micro-PLCs and parasitically powered nodes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Rating | 5kVRMS for 60s (VISO); 848VRMS continuous working voltage (VIOWM) - enables use in Class I, Division 2 hazardous locations. |
| Supply Range | 1.71V to 5.5V per side (VDDA & VDDB) - supports direct interface with 1.8V microcontrollers and 5V field-side drivers without level shifters. |
| Max Data Rate | 10Mbps - sufficient for high-speed isolated SPI, UART, or digital I/O in industrial automation interfaces. |
| Propagation Delay | 122ns typical (tPLH/tPHL at 3.3V) - ensures deterministic latency in closed-loop control feedback paths. |
| CMTI | ≥200kV/μs - rejects fast transients from motor drives or relay switching without data corruption. |
| Supply Current | 15.4μA/channel at DC, 3.3V - enables multi-year operation on coin-cell batteries in wireless sensor nodes. |
| Glitch Filter | 70ns typical - suppresses EMI-induced noise spikes on long PCB traces or cables in noisy factory environments. |
Pinout & Package
MAX22820EAWA+T is housed in an 8-pin wide-body SOIC (W8MS+7) package with 8mm creepage and clearance, RoHS-compliant, rated for -40°C to +125°C ambient operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDDA | Side A power supply input | Bypass with 0.1μF capacitor to GNDA; sets logic-high level for IN1/IN2 inputs and OUT1/OUT2 outputs on Side A. |
| IN1 | Logic input 1 (Side A) | Drives isolated channel A→B; accepts 1.71V–5.5V logic levels; 2pF input capacitance minimizes loading on source. |
| IN2 | Logic input 2 (Side A) | Drives isolated channel A→B; shares same supply domain as IN1 but operates independently. |
| GNDA | Side A ground reference | Return path for VDDA and IN1/IN2; must be separated from GNDB by isolation barrier. |
| GNDB | Side B ground reference | Return path for VDDB and OUT1/OUT2; electrically isolated from GNDA by reinforced dielectric barrier. |
| OUT2 | Logic output 2 (Side B) | Receives signal from IN1 (A→B direction); push-pull driver eliminates need for external pull-up resistors. |
| OUT1 | Logic output 1 (Side B) | Receives signal from IN2 (A→B direction); compatible with TTL/CMOS loads up to ±30mA short-circuit current. |
| VDDB | Side B power supply input | Bypass with 0.1μF capacitor to GNDB; sets logic-high level for OUT1/OUT2 and enables level translation to Side B logic domain. |
Key Features
| Feature | Design Value |
|---|---|
| Reinforced 5kVRMS isolation | Meets UL1577, cUL, and pending VDE 0884-11 - certified for single protection in safety-critical industrial systems. |
| Ultra-low 15.4μA/channel DC current | Reduces thermal load in sealed enclosures and extends battery life in portable diagnostic tools. |
| 70ns glitch rejection filter | Rejects ESD bursts and switching noise without compromising 10Mbps throughput in motor drive gate driver interfaces. |
| Independent dual supplies (1.71–5.5V) | Enables seamless level shifting between 1.8V MCU and 24V field-side analog front-ends in smart sensors. |
| Default-high output behavior | Ensures known state during power-up or input loss - critical for fail-safe enable/disable signaling in valve actuators. |
Applications
| 4–20mA Loop Process Control | Battery Management Systems |
|---|---|
Use Scenario: Isolating analog-to-digital converter outputs from 4–20mA transmitter ICs in hazardous-area temperature transmitters. IC Role / Device Role / Timing Role: Bidirectional digital isolator transferring calibration data and fault flags across galvanic barrier while maintaining loop power integrity. Use Value: Enables safe, low-power communication over 5kVRMS-rated barrier - eliminating need for optocouplers with higher leakage and aging drift. | Use Scenario: Monitoring cell voltage and temperature telemetry from isolated battery packs in energy storage systems. IC Role / Device Role / Timing Role: Transmitting BMS MCU commands to isolated ADCs and receiving status bits from isolated protection ICs via separate unidirectional channels. Use Value: 15.4μA/channel quiescent current allows continuous monitoring without depleting backup supercapacitors during grid outage. |
| Compact Micro PLC | Parasitically Powered Applications |
Use Scenario: Providing isolated digital I/O between ARM Cortex-M7 controller and DIN-rail-mounted relay modules in space-constrained edge controllers. IC Role / Device Role / Timing Role: Dual-channel isolator handling both input status reads (B→A) and output command writes (A→B) with <10ns channel-to-channel skew. Use Value: 122ns propagation delay and 200kV/μs CMTI ensure deterministic response to emergency stop signals under EMI stress. | Use Scenario: Powering isolated sensor nodes from harvested energy (e.g., piezoelectric or RF) where every nanoamp counts. IC Role / Device Role / Timing Role: Enabling bidirectional configuration and diagnostics across isolation barrier while consuming <31μA total at 1.8V. Use Value: Ultra-low 90.7μW/channel dissipation at 1Mbps prevents thermal runaway in epoxy-encapsulated IoT edge devices. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SI8621ED-B-IS | 3.75kVRMS isolation (VISO), 100Mbps max data rate, 13ns propagation delay, 1.7–5.5V supply, SOIC-8 wide package | Higher speed but lower isolation rating; no ATEX/IECEx certification | Select when system requires >10Mbps throughput and operates below 3.75kVRMS safety thresholds. |
| ADUM121N1BRZ-RL7 | 3kVRMS isolation, 150Mbps data rate, 13ns propagation delay, 1.7–5.5V supply, SOIC-8 narrow package | Narrow SOIC (4mm creepage); lacks 5kVRMS and intrinsic safety approvals | Choose for cost-sensitive, non-hazardous-area designs needing minimal propagation delay and footprint. |
Compared with SI8621ED-B-IS and ADUM121N1BRZ-RL7, the MAX22820EAWA+T trades raw speed for certified 5kVRMS reinforced isolation, ultra-low DC power, and intrinsic safety compliance - making it uniquely suited for battery-operated, explosion-proof industrial sensors where reliability and regulatory alignment outweigh bandwidth needs.
Availability
MAX22820EAWA+T is available at Aetrix Electronics and suitable for 4–20mA loop controllers, battery management systems, and compact micro PLCs requiring stable component supply, long-term lifecycle support, and traceable sourcing for industrial OEM programs.
Supply support for MAX22820EAWA+T 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 industrial, automotive, and communications markets.
The MAX22820EAWA+T belongs to Analog Devices' MAX22xxx family of reinforced digital isolators, engineered specifically for ultra-low-power, safety-certified isolation in harsh industrial environments - including intrinsic safety barriers and parasitically powered nodes.
FAQ
What is the isolation voltage rating of the MAX22820EAWA+T?
The MAX22820EAWA+T is rated for 5kVRMS isolation voltage for 60 seconds (VISO) and continuously withstands 848VRMS working voltage (VIOWM). It meets UL1577 and cUL standards, with pending VDE 0884-11 reinforced insulation certification. This rating applies specifically to the wide SOIC package variant and enables use in Class I, Division 2 hazardous locations when implemented per safety guidelines.
Does the MAX22820EAWA+T support bidirectional data flow?
Yes, the MAX22820EAWA+T supports bidirectional data flow through two independent unidirectional channels: IN1 and IN2 on Side A drive OUT2 and OUT1 on Side B respectively (A→B direction only per channel). Unlike full-duplex transceivers, it does not support simultaneous A↔B communication on the same pin pair - but its pinout enables true bidirectional system-level communication when paired with complementary devices or configured across separate signal paths.
What are the supply voltage requirements for MAX22820EAWA+T?
The MAX22820EAWA+T requires two independent supplies: VDDA (1.71V to 5.5V) referenced to GNDA for Side A inputs, and VDDB (1.71V to 5.5V) referenced to GNDB for Side B outputs. Both supplies must be bypassed with 0.1μF ceramic capacitors. The device operates across the full range without performance degradation - enabling direct interfacing with 1.8V microcontrollers and 5V field-side peripherals in the same design.
How does the glitch rejection filter function in MAX22820EAWA+T?
The MAX22820EAWA+T incorporates a 70ns (typical) glitch rejection filter on both channels to suppress transient noise spikes caused by ESD, relay bounce, or motor commutation. This filter is implemented in the isolation barrier's digital encoder stage and does not affect the 10Mbps maximum data rate. It ensures reliable signal transmission in electrically noisy industrial environments without requiring external RC filtering or firmware debouncing.
Is MAX22820EAWA+T certified for intrinsic safety (IS) applications?
Yes, the MAX22820EAWA+T is certified for intrinsic safety per ATEX and IECEx standards under Sira 0518 II 1G Ex ia IIC Ga (pending final documentation). It meets the stringent requirements for use in explosive atmospheres, including spark-energy limitation and thermal safety margins. This certification is specific to the MAX22820EAWA+T variant and relies on proper implementation of external safety barriers and layout per the manufacturer's IS design guide.
MAX22820EAWA+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Capacitive Coupling
- Type:
- SPI
- Isolated Power:
- Yes
- Number of Channels:
- 2
- Inputs - Side 1/Side 2:
- 2/0
- Channel Type:
- Unidirectional
- Voltage - Isolation:
- 5000Vrms
- Common Mode Transient Immunity (Min):
- 200kV/µs
- Data Rate:
- 10Mbps
- Propagation Delay tpLH / tpHL (Max):
- 136ns, 136ns
- Pulse Width Distortion (Max):
- 15ns
- Rise / Fall Time (Typ):
- 5ns, 5ns (Max)
- Voltage - Supply:
- 1.71V ~ 5.5V
- Grade:
- -
- Qualification:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
MAX22820EAWA+T FAQ
1.How can I place an order for MAX22820EAWA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX22820EAWA+T 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 MAX22820EAWA+T reliable?
The price and inventory of MAX22820EAWA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX22820EAWA+T is usually 5 days.
3.What payment methods are accepted for MAX22820EAWA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX22820EAWA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX22820EAWA+T?
MAX22820EAWA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX22820EAWA+T 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 MAX22820EAWA+T?
For technical support, including MAX22820EAWA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX22820EAWA+T requirements.
6.How does Aetrix verify that MAX22820EAWA+T is sourced from the original manufacturer or authorized distributors?
All MAX22820EAWA+T 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 MAX22820EAWA+T meets industry standards.
7.What is the process for return or replacement of MAX22820EAWA+T?
All MAX22820EAWA+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX22820EAWA+T, 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 MAX22820EAWA+T part is unused and in its original packaging.
Return procedure for MAX22820EAWA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX22820EAWA+T Tags
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