DESCRIPTION: CHO-DROP EMI absorbers are discrete components designed to reduce radiation from digital signal lines without significantly adding to propagation delay. They will normally suppress radiation from a given lead by 10-15 dB, and have a propagation delay of less than 10 nanoseconds. Placed in series with a signal line, these devices will suppress EMI emission without grounding, shielding or by- pass capacitors. They are supplied in reels for use with automatic insertion equipment. As a suppressor for unshielded cables, CHO-DROP absorbers should be put in series with each connector lead, including ground leads. To suppress radiation from a clock, place in series with a clock lead near the output of the clock driver. Undesired signals appearing at the power supply input may be reduced with a CHO-DROP absorber between the power supply output and the PCB.
Features:
• Flat absorption characteristics means no ringing (unlike ferrite beads)
• No grounding or shielding required
• DB insertion loss from 50-200 MHz
• Will not affect signal transmission
• Cost effective
• Supplied on reels for automatic insertion
