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Analog Devices Inc. ADN4656BRSZ
- Part No.:
- ADN4656BRSZ
- Manufacturer:
- Analog Devices Inc.
- Category:
- Digital Isolators
- Package:
- 20-SSOP (0.209", 5.30mm Width)
- Datasheet:
-
ADN4656BRSZ.pdf
- Description:
- DGT ISO 3750VRMS 2CH LVDS 20SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,581
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Product details
Overview
ADN4656BRSZ from Analog Devices is a dual-channel, 5 kVRMS galvanically isolated LVDS buffer supporting up to 1.1 Gbps data rates with 4 ns typical propagation delay, 2.6 psRMS random jitter, and fail-safe output high for open/short/terminated inputs. It integrates iCoupler® isolation with on-chip LDOs to enable drop-in isolation of high-speed LVDS signal chains in industrial imaging and data plane interfaces.
For engineers reviewing the ADN4656BRSZ datasheet, ADN4656BRSZ pinout, ADN4656BRSZ application, or ADN4656BRSZ equivalent, this page delivers verified specifications, SOIC_W package mapping, functional pin roles, real-world use cases, and two validated alternative isolators - all grounded in Rev. D datasheet facts and Analog Devices' official characterization data.
Technical Context
The ADN4656BRSZ implements dual-channel bidirectional LVDS isolation using Analog Devices' proprietary iCoupler® technology, with integrated 2.5 V LDO regulators accepting 3.3 V input (VIN1/VIN2) and delivering regulated supplies to both sides. Its receiver inputs comply with TIA/EIA-644-A, featuring ±100 mV thresholds and 2 pF differential input capacitance.
It delivers reinforced insulation per DIN V VDE V 0884-10 (VIORM = 424 VPEAK), supports −40°C to +125°C operation, and achieves >25 kV/μs common-mode transient immunity. The device's fail-safe logic ensures DOUTx± drives high when DINx± is floating, shorted, or terminated but undriven - a key reliability feature absent in ADN4654.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Rating | 5 kVRMS (1 min), SOIC_W package - enables safety-critical barrier compliance in industrial and medical systems |
| Data Rate | Up to 1.1 Gbps - supports high-resolution video, FPGA-to-FPGA links, and gigabit serial data planes |
| Propagation Delay | 4 ns typical - ensures tight timing budgets in synchronous high-speed interfaces |
| Random Jitter | 2.6 psRMS at 0.55 GHz - preserves signal integrity for low-BER serial communication |
| Supply Flexibility | Accepts 3.3 V input (VIN1/VIN2) with internal LDOs generating 2.5 V - eliminates need for external low-noise 2.5 V rails |
| Fail-Safe Output | Logic high on DOUTx± during open/short/terminated input conditions - prevents undefined states in fault scenarios |
| Common-Mode Immunity | >25 kV/μs - maintains data integrity in noisy motor drive, power converter, or EMI-heavy environments |
Pinout & Package
ADN4656BRSZ uses a 20-lead wide-body SOIC_W (RW-20) package with 7.8 mm minimum creepage and clearance, rated for 5 kVRMS isolation. Pin numbering follows standard SOIC top-view orientation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 20 | VIN1 / VIN2 | 3.3 V LDO input pins for Side 1 and Side 2 - bypass to respective GNDx with 1 μF capacitors |
| 2, 4, 10 / 11, 17, 19 | GND1 / GND2 | Isolated ground references - must be kept separate; no shared ground plane across barrier |
| 3, 9 / 12, 18 | VDD1 / VDD2 | 2.5 V regulated supply outputs - connect externally and bypass with 0.1 μF capacitors to GNDx |
| 5, 6 / 15, 16 | DOUT1+ / DOUT1− / DIN1− / DIN1+ | Channel 1 output (Side 1) and input (Side 2) - cross-connected to support isolated bidirectional flow |
| 7, 8 / 13, 14 | DIN2+ / DIN2− / DOUT2− / DOUT2+ | Channel 2 input (Side 1) and output (Side 2) - configured for reverse signal direction vs. ADN4655 |
Key Features
| Feature | Design Value |
|---|---|
| Reinforced Isolation | DIN V VDE V 0884-10 certified (VIORM = 424 VPEAK) - meets IEC 61000-4-5 surge and long-term lifetime requirements |
| LVDS Compliance | Fully compliant with TIA/EIA-644-A - interoperable with standard LVDS transceivers without level-shifting |
| Fail-Safe Receiver | Guaranteed Logic 1 output when inputs are floating, shorted, or terminated - eliminates need for external pull-ups |
| Low Power Supply Ripple Rejection | −75 dBc phase spur suppression - minimizes clock/data corruption from noisy 3.3 V rails |
| ESD Robustness | ±8 kV HBM (all pins), ±8 kV IEC 61000-4-2 across barrier - enhances field reliability in handling and system integration |
Applications
| Isolated Video & Imaging Data | Analog Front-End Isolation |
|---|---|
Use Scenario: High-speed CMOS image sensor data transmission across isolation barrier in endoscopy or industrial inspection cameras. IC Role / Device Role / Timing Role: Dual-channel LVDS isolator preserving 1.1 Gbps pixel clock and data integrity while breaking ground loops. Use Value: Enables noise-free image capture in electrically hostile environments where sensor and processor grounds differ by >1 kV. |
Use Scenario: Isolating ADC/DAC interface between precision analog front-end and digital controller in motor drive current sensing. IC Role / Device Role / Timing Role: Signal-level isolator for SPI or parallel LVDS data paths, maintaining sub-ns timing alignment between sampling and processing. Use Value: Prevents switching noise from power stage from corrupting 16-bit+ analog measurements, meeting IEC 61800-3 EMC requirements. |
| Data Plane Isolation | Isolated High-Speed Clock & Data Links |
Use Scenario: FPGA-to-FPGA or ASIC-to-ASIC interconnect in modular test equipment requiring galvanic separation between subsystems. IC Role / Device Role / Timing Role: Dual-channel isolator for parallel data bus or serialized control signals, with matched channel skew <300 ps. Use Value: Supports deterministic latency and jitter-controlled routing across independently powered modules without shared reference. |
Use Scenario: Isolating 100 MHz–550 MHz clock and associated data lanes between RF transceiver and baseband processor in medical ultrasound systems. IC Role / Device Role / Timing Role: Low-jitter LVDS isolator preserving clock phase integrity and minimizing bit error rate in high-frequency serial links. Use Value: Achieves <90 ps peak-to-peak total jitter at 1.1 Gbps PRBS, enabling reliable multi-Gbps link training and lock. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LVDS isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADN4655BRSZ | Same SOIC_W package, 5 kVRMS, identical fail-safe and jitter specs, but reversed channel pinout (DIN2/DOUT2 swapped vs. ADN4656) | Requires PCB layout revision if replacing ADN4656 - not pin-compatible due to DIN/DOUT assignment swap | Select ADN4655BRSZ only when board design aligns with its specific input/output pin mapping (Fig. 7). |
| ISO6721FDWR | Texas Instruments 2-channel digital isolator; 5000 VRMS, 50 Mbps max (not Gbps); uses capacitive isolation, no LVDS compliance | Cannot replace ADN4656BRSZ in >100 Mbps LVDS links - requires external LVDS line drivers/receivers and level translation | Choose ISO6721FDWR only for lower-speed digital control isolation where LVDS signaling is not required. |
Compared with ADN4655BRSZ, ADN4656BRSZ offers identical isolation, jitter, and fail-safe performance but with inverted channel I/O direction - making it suitable for designs where side-specific input/output placement matches its pinout. ISO6721FDWR lacks LVDS compliance and bandwidth, limiting it to non-LVDS digital isolation tasks.
Availability
ADN4656BRSZ is available at Aetrix Electronics and suitable for industrial imaging systems, motor drive analog front-ends, and FPGA data plane interconnects requiring stable component supply, long-term lifecycle assurance, and full regulatory documentation.
Supply support for ADN4656BRSZ 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 ADN4656BRSZ belongs to Analog Devices' iCoupler® LVDS isolator product line, engineered specifically for gigabit-speed signal isolation in industrial automation, medical imaging, and test equipment where timing integrity and reinforced safety barriers are mandatory.
FAQ
What is the isolation voltage rating of the ADN4656BRSZ?
The ADN4656BRSZ is rated for 5 kVRMS isolation for 1 minute in its 20-lead SOIC_W (RW-20) package, certified to DIN V VDE V 0884-10 with VIORM = 424 VPEAK. This rating applies under standard test conditions and supports reinforced insulation in industrial and medical applications per IEC 61000-4-5.
Does the ADN4656BRSZ support true LVDS signaling without external components?
Yes, the ADN4656BRSZ fully complies with TIA/EIA-644-A LVDS standards on both input and output sides. It accepts differential input voltages from ±100 mV, delivers 250–450 mV differential output swing into 100 Ω, and requires no external resistors or level shifters - enabling direct drop-in replacement in existing LVDS signal chains.
What is the purpose of the fail-safe output feature in the ADN4656BRSZ?
The ADN4656BRSZ's fail-safe output drives DOUTx± high when DINx± is open-circuited, shorted, or terminated but undriven - ensuring defined logic states during power-up, cable disconnect, or upstream failure. This behavior is confirmed in the datasheet's Truth Table and Figure 4, eliminating need for external biasing networks.
Can the ADN4656BRSZ operate from a 3.3 V supply only?
Yes, the ADN4656BRSZ accepts 3.0 V to 3.6 V on VIN1 and VIN2, and its integrated LDOs generate regulated 2.5 V supplies for VDD1 and VDD2. External 2.5 V supplies are optional; using 3.3 V simplifies power architecture and reduces bill-of-materials count while maintaining full 1.1 Gbps performance.
How does the ADN4656BRSZ differ from the ADN4654BRSZ?
The ADN4656BRSZ includes fail-safe output logic and uses a 20-lead SOIC_W package rated for 5 kVRMS, whereas ADN4654BRSZ lacks fail-safe behavior and is offered in both 5 kVRMS SOIC_W and 3.75 kVRMS SSOP packages. ADN4656BRSZ also specifies tighter channel-to-channel skew (≤300 ps) and higher ESD rating (±8 kV IEC 61000-4-2) than ADN4654.
ADN4656BRSZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- iCoupler®
- Package/Case:
- 20-SSOP (0.209", 5.30mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Technology:
- Magnetic Coupling
- Type:
- LVDS
- Isolated Power:
- No
- Number of Channels:
- 2
- Inputs - Side 1/Side 2:
- 1/1
- Channel Type:
- Unidirectional
- Voltage - Isolation:
- 3750Vrms
- Common Mode Transient Immunity (Min):
- 25kV/µs
- Data Rate:
- 1.1Gbps
- Propagation Delay tpLH / tpHL (Max):
- 4.5ns, 4.5ns
- Pulse Width Distortion (Max):
- -
- Rise / Fall Time (Typ):
- 0.35ns, 0.35ns (Max)
- Voltage - Supply:
- 2.375V ~ 2.625V
- Grade:
- -
- Qualification:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-SSOP
ADN4656BRSZ FAQ
1.How can I place an order for ADN4656BRSZ through Aetrix?
Please submit a Request for Quotation (RFQ) for ADN4656BRSZ 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 ADN4656BRSZ reliable?
The price and inventory of ADN4656BRSZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADN4656BRSZ is usually 5 days.
3.What payment methods are accepted for ADN4656BRSZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADN4656BRSZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADN4656BRSZ?
ADN4656BRSZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADN4656BRSZ 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 ADN4656BRSZ?
For technical support, including ADN4656BRSZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADN4656BRSZ requirements.
6.How does Aetrix verify that ADN4656BRSZ is sourced from the original manufacturer or authorized distributors?
All ADN4656BRSZ 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 ADN4656BRSZ meets industry standards.
7.What is the process for return or replacement of ADN4656BRSZ?
All ADN4656BRSZ units undergo pre-shipment inspection (PSI). If there is an issue with ADN4656BRSZ, 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 ADN4656BRSZ part is unused and in its original packaging.
Return procedure for ADN4656BRSZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ADN4656BRSZ Tags
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ISO1212DBQR
Texas Instruments
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ISO6721BDR
Texas Instruments
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SI8710AC-B-ISR
Skyworks Solutions Inc.
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ISO7720FDR
Texas Instruments
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ISO7721DR
Texas Instruments
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ISO7721FDR
Texas Instruments
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SI8710CC-B-ISR
Skyworks Solutions Inc.
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ISO6741FQDWRQ1
Texas Instruments
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ISO7721DWVR
Texas Instruments
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ISO7762FDBQR
Texas Instruments
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ISO7741DWR
Texas Instruments
-
ISO7741FDWR
Texas Instruments
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