ADI'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.

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