California Micro Devices offers the PACUSB-U1/U2/U3, a USB (universal serial bus) termination and filtering product, for use in PDAs, two-way pagers, and Internet appliances. It is available in a 6-pin SC70 package format, which is significantly smaller than the 6-pin SOT23 package. The small form factor of the PACUSB-U1/U2/U3 enables the device to be used in products where board space constraint is a key factor. Utilising California Micro Devices' patented P/Active technology, the device provides EMI/RFI filtering, termination and ESD protection that exceeds IEC 61000-4-2 Level 4 specification. The PACUSB-U1/U2/U3 is able to protect the PDA or Internet appliance from accidental damage caused by ESD up to 30 kV (contact discharge) when tested to IEC 61000-4-2 specifications.
The PACUSB-U1/U2/U3 device terminates the two data lines for the USB port and is a single-chip solution for USB upstream applications. There are three series resistor (R1) values available to engineers to match it and the USB driver's resistance with the USB cable's impedance. The three R1 values that CAMD offers are 15 Ohm, 33 Ohm, and 22 Ohm for PACUSB-U1, PACUSB-U2, and PACUSB-U3 respectively. Since the solution is silicon-based and its quality and reliability matches that of today's integrated circuits, California Micro Devices says that with the integration of resistors, capacitors and diodes on silicon, this device achieves termination, filtering and ESD protection of a USB port while also providing significant savings in cost and board space.
Read more...Why wait to automate NewElec Pretoria
Circuit & System Protection
NewElec’s initiative helps you gain operational visibility via HMI or PLC by retrofitting intelligent motor protection relays without replacing MCCs or rewiring the plant.
Read more...LED driver for industrial power supply indication Altron Arrow
Editor's Choice Circuit & System Protection
A simple and small solution for driving an LED to provide visual feedback in the presence/absence of a system’s power using a chip not originally designed for this purpose.
Read more...Clearing the Static: Cleaning in an ESD-protected area Actum
Circuit & System Protection
Cleaning in a protected electrostatic discharge area is a critical task to maintain the integrity of sensitive electronic components and prevent damage caused by static electricity.
While every effort has been made to ensure the accuracy of the information contained herein, the publisher and its agents cannot be held responsible for any errors contained, or any loss incurred as a result. Articles published do not necessarily reflect the views of the publishers. The editor reserves the right to alter or cut copy. Articles submitted are deemed to have been cleared for publication. Advertisements and company contact details are published as provided by the advertiser. Technews Publishing (Pty) Ltd cannot be held responsible for the accuracy or veracity of supplied material.
printer friendly version