GENERAL DESCRIPTION

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.

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

APPLICATIONS

Isolated video and imaging data

Analog front-end isolation

Data plane isolation

Isolated high speed clock and data links

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