CM2722R800R-00

Inductance: -
Mounting Type: Surface Mount
Number of Lines: 4
Height (Max): 0.197" (5.00mm)
Current: 5A
Operating Temperature: -55°C ~ 125°C
Filter Type: Power or Data Line
Series: CM
Manufacturer: Laird-Signal Integrity Products
DC Resistance (DCR): 20 mOhm Max
Impedance: 80 Ohm
Size / Dimension: 0.275" L x 0.265" W (6.99mm x 6.73mm)
Package / Case: Vertical, 8 Flat Lead
Packaging: Cut Tape (CT)


Description

Firewire and USB2.0 is a serial data / power port providing a broad range of data and current loads. The initial USB industry specification called for a serial port which operates in a hybrid full duplex mode and a power port that operates up to 1 amp of current. CM2722R800R-00 has created several layers of EMI problems that must be corrected. Also, USB component performance requirements have been stretched beyond initial specifications which has caused field failures of 1 amp and even 3 amp rated ferrite chip beads. Firewire and USB2.0 have increased the expected design loading to a minimum of 4.0 amps to insure failure free operation.

The source of most USB EMI CM2722R800R-00 problems is the two outside conductors in the connector for the power port. The primary problem is conducted common mode noise on the power line and the best EMI solution is a common mode choke.