The ADN4620/ADN4621 are dual-channel, signal isolated, low-voltage differential signalling (LVDS) buffers that operate up to 2,5 Gbps with very low jitter. The devices integrate Analog Devices iCoupler technology, enhanced for high-speed operation to provide drop-in galvanic isolation of LVDS signal chains.
AC coupling and/or level shifting to the LVDS receivers and from the LVDS drivers allows isolation of other high-speed signals, such as current mode logic (CML).
The devices include a refresh mechanism to monitor the input and output states and ensure that they remain the same in the absence of data transitions. For lower power consumption and high-speed operation with low jitter, the isolator circuits rely on 1,8 V supplies. 3,3 V supplies are used for LVDS receivers to support the full common-mode range with an input voltage range of 0 V to 2,4 V.
The devices operate over a wide industrial temperature range of -40 to 125°C and are available in a compact SSOP package for insulation at AC mains voltages or a wide SOIC_IC package which provides 15,1 mm creepage suitable for high insulation voltages up to 1500 V peak.
Typical applications for the ADN462x family include analog front-end isolation, isolated high-speed clock and data links, multi-Gigabit serialisation/deserialisation (SERDES), and PCB-to-PCB optical replacement, for example, short-reach fibre.
An evaluation board, the EVAL-ADN4621EBZ is available from Analog Devices.
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