USB port isolation board, using ADI's new

USB ADUM4160 protection device, the protection of computer

USB port security!

The board length: 50MM
The board width: 50MM

The use of the
The need for a.USB isolation
USB as the standard interface, to adapt to a variety of system platform, and a variety of devices, the operation is very simple, and can apply to the external power supply. However, USB also have the insufficient place, peripherals and the host must common ground to work. The host is usually a computer, more is a desktop computer. In this case, USB wire is often and chassis ground together, it could be used in the hidden danger.
In addition, most of the time, need USB signal and the computer is isolation,
When debugging the circuit board of high-voltage, if due to design or operational errors, it will burn out the debugger, and even computer USB port;
Some of the audio signal circuit, if the computer GND is not clean, the presence of clutter, disturbs the playback quality of signal;
For some USB application connection line is longer, computer GND and target board GND existing pressure caused by ground loop.
Based on the above situation, need to make the isolation treatment on USB signal, in order to ensure the safety of the system and the normal work.
Two introduction to.ADUM4160
ADuM4160 is a use of iCoupler ® technology company ADI USB port isolator, the high speed CMOS technology and monolithic air core transformer technology, can provide excellent working performance, and easy and low and full USB compatibility peripheral integrated.
ADuM4160 iCoupler technology and the internal logic of edge detection based on use, can realize the transparent, easy to configure, facing the port isolator upstream. Isolation of the upstream port has the advantages of simple circuit, power management and sound operation and other advantages.
Dissemination of the isolator propagation delay and standard hubs and cable delay equivalent. It can be used to either end of the 3 V to 5.5 V power supply voltage, and the voltage regulation to the signal level of the inside, which is directly connected with the VBUS. ADuM4160 on the pull-up resistor isolation control, so that the peripheral control connection timing. Very low current consumption of the device is in an idle state, so there is no need to suspend state.
Application
USB peripheral isolation
Isolated USB hub
Repeater
Three isolation plate.
Usually industrial USB isolation devices, many signals, using USB to transfer to other protocols and isolation, and then convert the USB signal, are hundreds of yuan price. Using the latest ADuM4160, can satisfy many requirements, and reduce the cost. The isolation board computer side by the USB port of the computer power supply, the output side by the target board power supply to the USB interface power supply. Otherwise the power input interface board, board with 5VDC precision reference current linear regulated power supply, power supply current >1A, than DC-DC output current standard USB port or general much. You can give without DC interface of the USB equipment and upgrading of power source.
Special instructions:
Because of the isolation chip supports USB Speed and Full Speed at Low, not as USB2.0 high speed use, please pay attention to the use requirements.
The device has been tested:
U disk, digital camera, large capacity storage devices;
STM32, ARM debugging with J-LINK;
AVR debugging with USBasp;
PIC debugging with ICD2;
Infineon debugging with miniwiggler;
Ti DSP XDS100 debugging.