5.7kV rms Digital Isolator for Isolated USB 2.0 High Speed (Downstream Clock Input)

The ADuM4165/ADuM4166 are USB 2.0 port isolators, utilizing Analog Devices, Inc., iCoupler® technology to dynamically support all USB 2.0 data rates; low (1.5 Mbps), full (12 Mbps), or high (480 Mbps), as required. The devices support host isolation with automatic speed negotiation as well as peripheral isolation.

High speed data is retimed for jitter reduction, requiring an external clock signal or crystal input. The ADuM4165 supports the clock or crystal input on the upstream side, and the ADuM4166 supports the clock or crystal input on the downstream side, offering two options to best suit the system design.

The low power standby mode for downstream (Side 2) supports applications with limited available power, such as battery-operated peripherals. The upstream (Side 1) standby current meets USB 2.0 requirements for suspended operation.

The isolators are specified over an extended industrial temperature range of −55°C to +125°C and are available in a 20-lead, wide-body, increased creepage SOICIC with 8.3 mm creepage and clearance.

Applications

* USB peripheral, USB host, and USB hub isolation

* Electronic test and measurement equipment

* Medical devices and integrated PCs

* Industrial PCs and isolated USB ports for debug or upgrade

* USB isolator modules and USB cable isolators

Protected by U.S. Patents 7,075,329; 8,432,182; 8,525,547; and 8,564,327. Other patents are pending.

* USB 2.0 signaling with automatic detection of low, full, and high speed connections

* 1.5 Mbps, 12 Mbps, and 480 Mbps data rates

* Bidirectional USB isolator for upstream or downstream ports

* Redriving and high speed data retiming for input jitter removal and an open eye

* Flexible clock input options

* 4.5 V to 5.5 V VBUSx or 3 V to 3.6 V operation on each side

* 21 mA typical idle, low or full speed mode supply current

* 48 mA typical idle, high speed mode supply current

* Ultra low power standby in USB 2.0 suspend (L2) or disconnect

* 1.7 mA typical low power standby, upstream supply current

* 20 μA typical low power standby, downstream supply current