ADN4650 5 kV rms, 600 Mbps Dual Tx or Rx Channel LVDS Isolator

Product Details

The ADN4650/ADN4651/ADN4652 are signal isolated, low voltage differential signaling (LVDS) buffers that operate at up to 600 Mbps with very 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 technology allows drop-in isolation of an LVDS signal chain.

Multiple channel configurations are offered, and the LVDS receivers on the ADN4651/ADN4652 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 regulator (LDO) 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 are available in a 20-lead, wide body SOIC package with 5 kV rms isolation or a 20-lead SSOP package with 3.75 kV rms isolation.

Applications

  • Analog front-end (AFE) isolation
  • Data plane isolation
  • Isolated high speed clock and data links
  • Isolated serial peripheral interface (SPI) over LVDS

Features and Benefits

  • 5 kV rms/3.75 kV rms LVDS isolator
  • Complies with TIA/EIA-644-A LVDS standard
  • Multiple dual-channel configurations
  • Up to 600 Mbps switching with low jitter
    • 4.5 ns maximum propagation delay
    • 151 ps maximum peak-to-peak total jitter at 600 Mbps
    • 100 ps maximum pulse skew
    • 600 ps maximum part to part skew
  • 2.5 V or 3.3 V supplies
  • −75 dBc power supply ripple rejection and glitch immunity
  • ±8 kV IEC 61000-4-2 ESD protection across isolation barrier
  • High common-mode transient immunity: >25 kV/μs
  • Passes EN55022 Class B radiated emissions limits with 600 Mbps PRBS
  • Safety and regulatory approvals (20-lead SOIC package)
    • UL: 5000 V rms for 1 minute per UL 1577
    • CSA Component Acceptance Notice 5A
    • VDE certificate of conformity
      • DIN V VDE V 0884-10 (VDE V 0884-10):2006-12
      • VIORM = 424 V peak
  • Fail-safe output high for open, short, and terminated input conditions (ADN4651/ADN4652)
  • Operating temperature range: −40°C to +125°C
  • Choice of package and isolation options
    • 3.75 kV rms in highly integrated 20-lead SSOP
    • 5 kV rms in 20-lead SOIC with 7.8 mm creepage/clearance