Analog Devices Inc

ADN4620 3.75 kVrms, Dual LVDS 2.5 Gigabit Isolators

Analog Devices’ ADN4620 employs iCoupler® technology enhanced for high-speed operation to provide drop-in galvanic isolation of LVDS signal chains

Image of Analog Devices' ADN4620 3.75 kV rms, Dual LVDS 2.5 Gigabit IsolatorsADI's ADN4620 is a dual-channel, signal isolated, low voltage differential signaling (LVDS) buffer that operates at up to 2.5 Gbps with very low jitter. The devices integrate ADI iCoupler technology enhanced for high-speed operation to provide drop-in galvanic isolation of LVDS signal chains. AC coupling, level shifting to the LVDS receivers and from the LVDS drivers, or both allow isolation of other high-speed signals, such as current mode logic (CML).

The ADN4620 includes a refresh mechanism to monitor the input and output states and ensure that it remains the same in the absence of data transitions (for example, at power-on). For lower power consumption and high-speed operation with low jitter, the isolator circuits rely on 1.8 V supplies. In comparison, 3.3 V supplies are used for LVDS receivers to support the full common-mode range with an input voltage range (input common mode plus differential input voltage) of 0 V to 2.4 V per Table 2 in the data sheet.

The devices are fully specified over a wide industrial temperature range and are available in a compact SSOP package with 5.3 mm creepage (for reinforced insulation at AC mains voltages).

The EVAL-ADN4620EBZ allows quick and easy evaluation of the ADN4620 LVDS isolators without needing external components. The ADN4620’s iCoupler technology combines a 2-channel isolator with LVDS receivers and drivers into a single, 20-lead SSOP package. The ADN4620 is capable of running at data rates of up to 2.5 Gbps with low jitter

Resources

Image of Analog Devices' ADN4620 3.75 kV rms, Dual LVDS 2.5 Gigabit Isolators

Features
  • 3.75 kVRMS LVDS isolators
  • Complies with TIA/EIA-644-A LVDS signal levels
  • Dual-channel configuration (ADN4620: 2 + 0, ADN4621: 1 + 1)
  • Any data rate up to 2.5 Gbps switching with low jitter
    • 5 Gbps total bandwidth across two channels
    • 2.15 ns typical propagation delay
    • Typical jitter: 0.82 ps rms random, 40 ps total peak-to-peak
  • Lower power 1.8 V supplies with 3.3 V supplies for I/O
  • ±7 kV IEC 61000-4-2 ESD protection across isolation barrier
  • High common-mode transient immunity: 70 kV/μs typical
  • Safety and regulatory approvals (20-lead SSOP package)
    • UL (pending): 3750 VRMS for 1 minute per UL 1577
    • CSA Component Acceptance Notice 5A (pending)
    • VDE certificate of conformity, reinforced insulation (pending)
      • DIN V VDE V 0884-11 (VDE V 0884-11):2017-01
      • VIORM = 1500 VPEAK (maximum working insulation voltage)
  • Enable or disable refresh (low-speed output correctness check)
  • Operating temperature range: -40°C to +125°C
  • Compact SSOP package with 5.3 mm creepage
Applications
  • Analog front-end isolation
  • Data plane isolation
  • Isolated high-speed clock and data links
  • Multigigabit serialization/deserialization (SERDES)
  • PCB-to-PCB optical replacement (for example, short reach fiber)

IC

ImageManufacturer Part NumberDescriptionAvailable QuantityPriceView Details
DGTL ISO 3.75KV 2CH LVDS 20-SSOPADN4620BRSZDGTL ISO 3.75KV 2CH LVDS 20-SSOP669 - Immediate$30.96View Details

Evaluation Board

ImageManufacturer Part NumberDescriptionAvailable QuantityPriceView Details
EVAL BOARD FOR ADN4620EVAL-ADN4620EBZEVAL BOARD FOR ADN46200 - Immediate$126.98View Details
Published: 2022-08-23

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