Adafruit USB Isolator - 100mA Isolated Low/Full Speed USB

This USB Isolator is the perfect solution for anyone dealing with the frustration of a shared earth ground when using USB testing instruments like logic analyzers, multimeters, or oscilloscopes. It provides power and signal isolation, improving common-mode voltage, enhancing noise rejection, and allowing circuits to operate at different voltage levels.

This isolator protects your equipment from harmful noise, ground loops, surges, and spikes. It works with 1.5Mbps (low speed) and 12Mbps (full speed) USB devices (not suitable for high-speed USB devices like video cameras—please check compatibility). The isolator is based on Analog Devices' USB isolators, and it even includes its own isolated 5V power supply that can deliver 100mA, making it ideal for devices like the BitScope Micro USB.

Perfect for when you need to separate or isolate the earth ground from your circuit, this isolator adds high-voltage protection, accident protection, and helps with floating ground needs. It’s a must-have if you want to protect your computer or laptop while using USB testing instruments.

Key Features:

• Works with 5V power, 3.3V logic USB devices only
• Ideal for low-speed and full-speed USB devices (not recommended for high-speed)
• Provides 100mA isolated 5V power supply
• SMT USB port for added durability and reliability

Technical Details:

• Dimensions: 52mm x 30mm x 10mm / 2" x 1.2" x 0.4"
• Weight: 8.6g
• PCB Files: Available on GitHub (EagleCAD)
• Fritzing Object: Available in the Adafruit Fritzing Library

Revision History:

• December 12, 2023: Updated with SMT USB port and Adafruit Pinguin silkscreen.
• April 20, 2018: Mini USB connector swapped for a Micro USB connector.