Electronic Design

EMI Filters With ESD Protection Reduce Interference In Cell Phones

Three electromagnetic interference (EMI) filter arrays with electrostatic discharge (ESD) protection in Thin DFN (TDFN) packages are designed for high-speed LCD display and camera data interfaces with maximum data rates up to 54 Mbits/s per line. Signal components from 800 MHz to 2.9 GHz are attenuated by at least 25 dB. The typical 3-dB point is 110 MHz. All three arrays exhibit extremely low parasitic inductance (10 to 20 pH) due to their TDFN-package ground pads. ON Semiconductor's four-channel NUF4402 costs $0.25 each in 10,000-unit quantities. The six-channel NUF6401 is $0.33 per unit, and the eight-channel NUF8401 is $0.44. ED Online 9509

ON Semiconductor

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