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Analog Devices Inc./Maxim Integrated MAX22820EAWA+
- Part No.:
- MAX22820EAWA+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Digital Isolators
- Package:
- 8-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
MAX22820EAWA+.pdf
- Description:
- 2-CH 3KVRMS DIGITAL ISOLATOR
- Quantity:
- Payment:
- Shipping:
Inventory:128
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Product details
Overview
MAX22820EAWA+ 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 (IN1→OUT2, IN2→OUT1), operates from 1.71V to 5.5V per side, and delivers 10Mbps data rate with 122ns typical propagation delay at 3.3V - ideal for 4–20mA loop interfaces in industrial process control.
For engineers reviewing the MAX22820EAWA+ datasheet, MAX22820EAWA+ pinout, MAX22820EAWA+ application, or MAX22820EAWA+ equivalent, key selection criteria include reinforced 5kVRMS isolation rating, ultra-low 15.4μA/channel supply current at 100kbps (3.3V), glitch filter (70ns typ), default-high output behavior, and compatibility with parasitically powered systems requiring minimal quiescent power.
Technical Context
The MAX22820EAWA+ implements capacitive-based galvanic isolation with proprietary silicon process technology, enabling reinforced insulation certified to UL1577, cUL, and pending VDE 0884-11. Its dual unidirectional channels operate independently: IN1 drives OUT2 (Side A → Side B), and IN2 drives OUT1 (Side A → Side B), supporting same-direction data flow across isolated domains.
Each side features independent 1.71V–5.5V supplies (VDDA/GNDA and VDDB/GNDB), enabling level translation between logic families. Integrated refresh circuitry maintains output validity during static input conditions, while undervoltage lockout (UVLO) ensures outputs enter high-Z or default state during supply faults - critical for safe operation in battery management and intrinsic safety (ATEX/IECEx) applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Rating | 5kVRMS withstand (60s), 848VRMS continuous working voltage - meets reinforced insulation requirements for industrial safety-critical interfaces. |
| Supply Current | 15.4μA per channel at 100kbps (VDD = 3.3V) - enables energy-constrained designs like parasitically powered sensors. |
| Propagation Delay | 122ns typical (IN→OUT, 3.3V) - supports deterministic timing in real-time control loops up to 10Mbps. |
| CMTI | 200kV/μs minimum - rejects fast transients in motor drives and power converters without data corruption. |
| Data Rate | 10Mbps maximum - sufficient for high-speed digital fieldbus communication (e.g., HART, IO-Link). |
| Glitch Filter | 70ns typical rejection window - suppresses noise-induced false transitions in electrically noisy factory environments. |
| Operating Temp | -40°C to +125°C - qualified for under-hood automotive and industrial ambient conditions. |
Pinout & Package
MAX22820EAWA+ uses an 8-pin wide-body SOIC (W8MS+7) package with 8mm creepage and clearance, optimized for reinforced 5kVRMS isolation. Pin 1 is VDDA (Side A supply), Pin 2 is IN1 (Side A input), Pin 3 is IN2 (Side A input), Pin 4 is GNDA (Side A ground), Pin 5 is GNDB (Side B ground), Pin 6 is OUT2 (Side B output), Pin 7 is IN1 (Side B input), Pin 8 is VDDB (Side B supply). The device implements cross-channel directionality: IN1→OUT2 and IN2→OUT1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDDA (Pin 1) | Side A power supply input | Bypass with 0.1μF capacitor to GNDA; sets logic levels for IN1/IN2 and enables internal circuitry on Side A. |
| IN1 (Pin 2) | Side A digital input | Drives OUT2 on Side B; accepts 1.71V–5.5V logic; 2pF input capacitance minimizes loading on source. |
| IN2 (Pin 3) | Side A digital input | Drives OUT1 on Side B; identical interface to IN1; supports independent signal routing across isolation barrier. |
| GNDA (Pin 4) | Side A reference ground | Return path for VDDA and inputs; must be isolated from GNDB to maintain galvanic separation. |
| GNDB (Pin 5) | Side B reference ground | Return path for VDDB and outputs; physically separated from GNDA by 8mm creepage for reinforced safety. |
| OUT2 (Pin 6) | Side B digital output | Sink/source capable (±4mA), push-pull - eliminates external pull-ups; driven by IN1 on Side A. |
| IN1 (Pin 7) | Side B digital input | Not used in MAX22820EAWA+ configuration; reserved for MAX22821 variant (bidirectional channel pairing). |
| VDDB (Pin 8) | Side B power supply input | Bypass with 0.1μF capacitor to GNDB; powers output drivers and refresh logic on Side B. |
Key Features
| Feature | Design Value |
|---|---|
| Reinforced 5kVRMS isolation | Enables single-barrier safety compliance in industrial PLCs and motor drives without additional isolation components. |
| Ultra-low 15.4μA/channel @ 100kbps | Reduces system thermal load and extends battery life in portable diagnostic tools and wireless sensor nodes. |
| 70ns typical glitch rejection | Filters EFT/burst noise in factory-floor environments, preventing spurious state changes in control signals. |
| Independent 1.71V–5.5V dual supplies | Permits level translation between 1.8V microcontrollers and 3.3V/5V I/O peripherals across isolation boundary. |
| Default-high output behavior | Ensures known safe state (e.g., disable command) during power-up, brownout, or open-circuit input conditions. |
Applications
| 4–20mA Loop Process Control | Battery Management Systems |
|---|---|
Use Scenario: Isolating analog-to-digital converter (ADC) and microcontroller in hazardous-area transmitter modules. IC Role / Device Role / Timing Role: Digital isolator transferring digitized sensor data and control commands across 5kVRMS barrier while maintaining loop power integrity. Use Value: Enables SIL-2 compliant designs with 848VRMS continuous working voltage and ±10kV surge immunity per IEC 61000-4-5. | Use Scenario: Monitoring cell voltage and temperature in high-voltage EV battery packs with distributed sensing nodes. IC Role / Device Role / Timing Role: Isolating MCU-side communication (UART/SPI) from high-side monitoring ICs operating at different potentials. Use Value: Ultra-low 15.4μA/channel supply current minimizes self-heating and preserves battery runtime in always-on monitoring circuits. |
| Compact Micro PLCs | Parasitically Powered Field Devices |
Use Scenario: Providing isolated digital I/O in space-constrained DIN-rail controllers interfacing with solenoids and limit switches. IC Role / Device Role / Timing Role: Reinforced isolator enabling 10Mbps deterministic I/O update rates between CPU and field-side drivers. Use Value: 122ns propagation delay and 6ns pulse-width distortion ensure sub-microsecond timing accuracy for real-time motion control. | Use Scenario: Powering and isolating smart valve positioners from 4–20mA loop without auxiliary supply. IC Role / Device Role / Timing Role: Low-quiescent isolator allowing microcontroller and transceiver to operate directly from loop-derived energy. Use Value: 90.7μW/channel power at 1Mbps (1.8V) enables full-duplex digital communication within strict 4mA loop budget. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISO7821FDWW | 2-channel, 5000VRMS reinforced isolation; higher 2.5mA supply current at 1Mbps; 110ns propagation delay. | Targeted at high-noise motor drive gate drivers; lacks parasitic-power optimization. | Select when higher CMTI (100kV/μs) and tighter timing skew are prioritized over ultra-low power. |
| ADUM2201BRWZ | 2-channel, 5000VRMS reinforced isolation; 1.2mA supply current at 1Mbps; 48ns propagation delay; 3.3V-only supply range. | Optimized for high-speed industrial networks; no 1.71V support or glitch filtering. | Select when lowest propagation delay is critical and system operates exclusively at 3.3V with stable supply. |
Compared with ISO7821FDWW and ADUM2201BRWZ, MAX22820EAWA+ uniquely combines 5kVRMS reinforcement, 15.4μA/channel ultra-low power at 100kbps, 70ns glitch filtering, and 1.71V–5.5V flexible supply - making it optimal for energy-sensitive, safety-critical field instrumentation where supply headroom and noise immunity are constrained.
Availability
MAX22820EAWA+ is available at Aetrix Electronics and suitable for 4–20mA loop process control, battery management systems, compact micro PLCs, and parasitically powered field devices requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.
Supply support for MAX22820EAWA+ 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 is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.
The MAX22820EAWA+ belongs to Analog Devices' MAX22xxx family of reinforced digital isolators, designed specifically for ultra-low-power, high-reliability isolation in safety-critical industrial automation and intrinsic safety (ATEX/IECEx) applications.
FAQ
What is the isolation voltage rating of the MAX22820EAWA+?
The MAX22820EAWA+ is rated for 5kVRMS withstand voltage for 60 seconds (VISO) and continuously withstands 848VRMS (VIOWM), meeting reinforced insulation requirements per UL1577 and pending VDE 0884-11 certification. This rating applies specifically to the wide SOIC package variant and enables use in high-voltage industrial interfaces where galvanic separation is mandatory for operator safety.
Does the MAX22820EAWA+ support bidirectional data flow?
No, the MAX22820EAWA+ implements two unidirectional channels configured for same-direction data transfer: IN1 on Side A drives OUT2 on Side B, and IN2 on Side A drives OUT1 on Side B. For true bidirectional channel pairing (e.g., IN1↔OUT1, IN2↔OUT2), the MAX22821EAWA+ variant must be selected - the MAX22820EAWA+ pinout and functional diagram confirm this fixed forward-direction topology.
What is the typical supply current of the MAX22820EAWA+ at low data rates?
The MAX22820EAWA+ draws 15.4μA per channel at 100kbps with 3.3V supply, and only 11.3μA per channel at DC (no switching), as specified in the DC Electrical Characteristics table. These ultra-low values enable operation in energy-harvesting and battery-powered systems where minimizing quiescent power is essential to extend operational lifetime.
How does the glitch rejection filter function in the MAX22820EAWA+?
The MAX22820EAWA+ incorporates a 70ns typical glitch rejection filter that suppresses narrow noise pulses on input signals, preventing false triggering caused by EFT, ESD, or switching transients. This feature is confirmed in the Dynamic Characteristics tables for MAX22_2_B/E variants and is critical for reliable operation in electrically noisy industrial environments such as factory floors and motor control cabinets.
What safety certifications does the MAX22820EAWA+ hold?
The MAX22820EAWA+ is certified to UL1577 (File E351759) and CSA Bulletin 5A for 5000VRMS reinforced isolation, with pending VDE 0884-11 certification and ATEX/IECEx intrinsic safety approval (Sira 0518, II 1G Ex ia IIC Ga). These certifications validate its suitability for use in hazardous locations and safety-critical systems requiring certified galvanic barriers.
MAX22820EAWA+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Technology:
- Capacitive Coupling
- Type:
- General Purpose
- Isolated Power:
- No
- 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+ FAQ
1.How can I place an order for MAX22820EAWA+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX22820EAWA+ 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+ reliable?
The price and inventory of MAX22820EAWA+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX22820EAWA+ is usually 5 days.
3.What payment methods are accepted for MAX22820EAWA+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX22820EAWA+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX22820EAWA+?
MAX22820EAWA+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX22820EAWA+ 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+?
For technical support, including MAX22820EAWA+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX22820EAWA+ requirements.
6.How does Aetrix verify that MAX22820EAWA+ is sourced from the original manufacturer or authorized distributors?
All MAX22820EAWA+ 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+ meets industry standards.
7.What is the process for return or replacement of MAX22820EAWA+?
All MAX22820EAWA+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX22820EAWA+, 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+ part is unused and in its original packaging.
Return procedure for MAX22820EAWA+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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