California Micro Devices Introduces Ultra Low Capacitance Praetorian EMI Filter for High Speed Data Lines

摘要

California Micro Devices has unveiled a new member of its Praetorian ASIP (Application Specific Integrated Passive) EMI inductor-based filter arrays family, offering added filtering performance combined with ESD protection. The CM 1470 targets high speed data lines for high resolution imager interfaces in wireless handsets. In popular clamshell and slider phone configurations, the interface signals are typically routed on a flexible printed circuit board susceptible to EMI. Moreover, as sensor resolution increases, these interfaces operate at higher data rates, and maintaining signal integrity becomes a key requirement. Traditional EMI filters based on R-C (resistor-capacitor) architectures result in significant degradation of signal integrity, and cannot filter EMI effectively while maintaining sharp edges of the signal.