Without a connected downstream device, the maximum output voltage is limited to about 5.3V this way. A 5.1V Zener diode in connection with a small resistor provides this load if the voltage is too high. The load at the output of the converter must be at least 10% of the specified maximum load, in this case 20mA, as otherwise the output voltage could rise significantly above 5.5V, which would damage the ADuM3160 or the connected device.
#Usb digital isolator full
Note that the ADuM3160 is hardwired for USB2.0 full speed (12Mbps) support only on this board.
#Usb digital isolator serial
High common mode transient immunity: >25kV/μsįor transient voltage protection, TVS diode arrays are added at the input and the output in addition to the typical serial resistors.
8mA maximum upstream supply current at 12Mbps.Compatible with USB 2.0 full speed (12Mbps).The 5kV reinforced insulation version, the ADuM4160, can also be used with this board. The device draws low enough idle current that a suspend state is not required. The ADuM3160 provides isolated control of the pull-up resistor to allow the peripheral to control connection timing. V_BUSx by internally regulating the voltage to the signaling level. It operates with the bus voltage on either side ranging from 4.5 V to 5.5 V, allowing connection directly to The isolator has a propagation delay comparable to that of a standard hub and cable. Data direction is determined on a packet-by-packet basis. Because the USB lines must switch between actively driving D+/D− and allowing external resistors to set the state of the bus, the ADuM3160 provides mechanisms for detecting the direction of data flow and control over the state of the output buffers. This is desirable in many cases because it minimizes external components and simplifies the design however, this presents particular challenges when isolation is required. Many microcontrollers implement USB so that it presents only the D+ and D− lines to external pins. Combining high speed CMOS and monolithic air core transformer technology, this isolation component provides outstanding performance characteristics and is easily integrated with low and full speed USB-compatible peripheral devices.
The ADuM3160 is a 2.5kV USB port digital isolator. This 2.5kV USB 2.0 Isolator with 200mA power supply and full speed (12Mbps) support is a simple solution to these problems. Furthermore, measuring devices with a USB connection can deliver incorrect measurement results due to ground loops, or even cause short circuits. Special devices, such as a USB killer, actually serve this purpose. Defective USB devices can destroy the USB port or even the motherboard of your PC.
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