High Speed (UAC2) USB Galvanic Isolator

Model II

High Speed USB Isolator - "Ground Loop Breaker"

For measurement and audio.

Internal/External Output Power Supply

Based on new TI' ISOUSB211 chip, this device provides full isolation between PC and external equipment. This is to prevent noise coming from the PC and eliminate ground loops.

There are two possible use cases:

Q2.2023: New Model III  replaced the old Model I & 2. - with automatic switch between the internal and external power supplies by DC-Plug insertion.

As TI's ISOUSB211 chip is not available, we will make an option using Analog Devices ADUM3165 in Q3.2023.

Hint: since all Altor Audio USB audio devices are already isolated (on the I2S bus) and do not require this USB isolation, this isolator is mainly intended for use with equipment from other companies.

For example, E1DA's Cosmos ADC is a very good device, but due to the non-isolated design, there are sometimes increased noise levels and noise peaks. If you measure a non-isolated DAC or something else that has its own connection to a PC (or mains safety ground), you will get the classic "ground loop". We encountered this problem even with an isolated DAC, after connecting a non-isolated JTAG interface to the DAC microcontroller.