ADN4654: 5 kV RMS, Dual-Channel LVDS Gigabit Isolator

The ADN4654/ADN4655/ADN4656 are signal isolated, low voltage differential signaling (LVDS) buffers that operate at up to 1.1 Gbps with low jitter. The devices integrate Analog Devices, Inc., iCoupler® technology, enhanced for high speed operation to provide galvanic isolation of the TIA/EIA-644-A compliant LVDS drivers and receivers. This integration allows drop-in isolation of an LVDS signal chain.

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The ADN4654/ADN4655/ADN4656 comprise multiple channel configurations, and the LVDS receivers on the ADN4655 and ADN4656 include a fail-safe mechanism to ensure a Logic 1 on the corresponding LVDS driver output when the inputs are floating, shorted, or terminated but not driven.

For high speed operation with low jitter, the LVDS and isolator circuits rely on a 2.5 V supply. An integrated on-chip low dropout (LDO) regulator can provide the required 2.5 V from an external 3.3 V power supply. The devices are fully specified over a wide industrial temperature range and come in a 20-lead, wide body SOIC_W package with 5 kV rms isolation or in a 20-lead SSOP package with 3.75 kV rms isolation.


0719 ADN4654 Drawings-Packages 1

0719 ADN4654 Drawings-Packages 2

Key Features

- 5 kV rms and 3.75 kV rms LVDS isolators
- Complies with TIA/EIA-644-A LVDS standard
- Multiple dual-channel configurations
- Any data rate up to 1.1 Gbps switching with low jitter
        - 4 ns typical propagation delay
        - 2.6 ps rms typical random jitter, rms
        - 90 ps typical peak-to-peak total jitter at 1.1 Gbps
- 2.5 V or 3.3 V supplies
- −75 dBc power supply ripple rejection, phase spur level
- Glitch immunity
- ±8 kV IEC 61000-4-2 ESD protection across isolation barrier
- High common-mode transient immunity: >25 kV/μs
- Passes EN 55022 Class B radiated emissions limits with 1.1 Gbps PRBS
- Safety and regulatory approvals (20-lead SOIC_W package)
        - UL (pending): 5000 V rms for 1 minute per UL 1577
        - CSA Component Acceptance Notice 5A (pending)
        - VDE certificate of conformity (pending)
                    - DIN V VDE V 0884-10 (VDE V 0884-10):2006-12
                    - VIORM = 424 VPEAK
- Fail-safe output high for open, short, and terminated input conditions (ADN4655/ADN4656)
- Operating temperature range: −40°C to +125°C
- 7.8 mm minimum creepage and clearance

General Applications

- Isolated video and imaging data
- Analog front-end isolation
- Data plane isolation
- Isolated high speed clock and data links

Evaluation Board

YES — The ADN4654 can be evaluated with the EVAL-ADN4654.

0719 ADN4654 Evaluation Board

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Analog Devices LVDS View

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Analog Devices Development Kits and Tools View



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