ADN4656

RECOMMENDED FOR NEW DESIGNS

5 kV RMS/3.75 kV RMS, Dual LVDS Gigabit Isolator (First Channel Reversed)

Analog Devices ADN4656 Product Info

10 February 2026 6

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
  - V_IORM = 424 V_PEAK
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

Part details & applications

The ADN4654/ADN4655/ADN4656¹ 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.

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.

Applications

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

¹ Protected by U.S. Patents 5,952,849; 6,873,065; 6,903,578; and 7,075,329. Other patents are pending.

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