USB-ISO Datasheet USB-ISO | P1-P3

USB-ISO – USB 2.0 compliant, 1000VDC

USB Full Speed isolator

User's manual

All boards produced by Olimex are ROHS compliant

Rev. E, January 2015

Page 1

INTRODUCTION

USB-ISO is USB Full speed USB 2.0 compliant port isolator with 1000V isolation voltage.

USB-ISO is also often used by audiophiles to eliminate noise in audio systems or DACs.

This device is very useful as protects your PC computer USB host from over-voltages, ESD shock.

USB-ISO provides 1000VDC isolation and this way you can connect to your PC programmers and

debuggers which work directly with targets at high voltages like 220V mains power supply etc. Even

if your target is not connected to high voltage, USB-ISO is additional protection for your valuable

computer, laptop etc. USB-ISO may work with or without external power supply, if no external power

supply it generates with isolated DC-DC converter 5V isolated voltage for your USB device by taking

power from your USB host, if your USB device needs more power than your USB host can provide,

there is external power supply option you can connect any power supply adapter which provides

power supply from +8 to +15VDC and USB-ISO internal DC-DC will convert it to 5VDC for the USB

device. Note that in this case the external power supply should be ISOLATED as this DC-DC

converter is not isolated and the external power supply will be directly connected to your USB

programmer/debugger etc! Just your PC side will be isolated.

USB-ISO FEATURES

• USB isolation 1000VDC between USB host and USB device

• Fully USB 2.0 Compliant

• Full speed data rate 12 Mbps

• Bidirectional communication

• Short-circuit protection for xD+ and xD- lines

• Class 3A contact ESD performance per ANSI/ESD STM5.1-2007

• High common-mode transient immunity: >25 kV/µs

• USB_DEVICE connector- which is USB-B type and have to be connected to the PC USB host.

• USB_HOST connector which is USB-A type and have to be connected to the USB device like

USB JTAG, programmer, debugger etc

• Power jack for external power supply with +8-15VDC, note this power jack is not isolated

from the USB_HOST connector (the personal computer is always protected; the power supply

and the device connected to the USB_HOST might influnce each other in case of fault)

• DC-DC converter supply isolated voltage to the USB_HOST from the USB_DEVICE if no

external power supply is present

• Dimensions 41.5×36.5mm (1.634×1.437")

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ELECTROSTATIC WARNING

The USB-ISO board is shipped in protective anti-static packaging. The board must not be subject to

high electrostatic potentials. General practice for working with static sensitive devices should be

applied when working with this board.

BOARD USE REQUIREMENTS

Cables: You need two 1.8 meter USB A-B cable to connect to the PC and to your USB device. Note

these cables should be with LOW resistance (under 1 ohm) and good insulation, on the market there

are cheap cables with HIGH resistance (above 1 ohm) and poor insulation which are not good for USB

connection and cause signal fading and lost of communication packets.

USB target speed: It is important to notice that the unit protects and shield USB full-speed devices or

devices that can enter USB full-speed mode. USB-ISO would not work with low-speed devices (like

keyboards or mice). It would neither work with high-speed-only devices. You can use a USB analyzer

program to determine the USB speed of your USB target.

USB target: If you have to power your target device only from the personal computer make sure it

doesn't consume more than 350mA or you might need to provide external power supply either to the

target or to the USB-ISO's power jack.

SOFTWARE DRIVERS

USB-ISO does not need any software drivers.

SAFETY AND REGULATORY APPROVALS:

The USB isolator component used in USB-ISO have the following regulatory approvals:

• UL recognition: 5000 V rms for 1 minute per

◦ UL 1577 (pending)

• CSA Component Acceptance Notice #5A

◦ IEC 60601-1: 125 V rms (reinforced)

◦ IEC 60950-1: 380 V rms (reinforced)

• VDE certificate of conformity (pending)

◦ DIN V VDE V 0884-10 (VDE V 0884-10):2006-12

◦ VIORM = 846 V peak

POWER SUPPLY CIRCUIT

USB-ISO can take power from two sources:

- External power jack – 8V to 15 V DC, in this case maximum current available depend on the

maximum current which your external power supply can provide, up to 750 mA

- USB_DEVICE connector – 5V, in this case maximum current available depend on the maximum

current which PC USB host can provide, up to 350 mA

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P1-P3 P4-P6 P7-P8

USB-ISO

Mfr. #:

Buy USB-ISO

Manufacturer:

Olimex Ltd.

Description:

Interface Development Tools FL SPD USB ISOLATOR 1000V 41x36.5mm

Lifecycle:

New from this manufacturer.

Delivery:

DHL FedEx Ups TNT EMS

Payment:

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