Milpitas, Calif. California Micro Devices announced the availability of its new patent-pending Praetorian advanced application specific integrated passive (ASIP) process that enables the integration of spiral inductors with resistors, capacitors and electrostatic discharge (ESD) protection diodes in a single chip. Key benefits include lower cost and a reduced form factor solution in a single integrated device in comparison to existing solutions comprised of discrete components and ceramic multi-channel inductor/capacitor (LC) arrays, said the company.
Enabling California Micro Devices to produce highly integrated, single-chip electromagnetic (EMI) filters with ESD protection, the Praetorian ASIP process uses the company's Centurion zener process to produce the underlying resistor, capacitor and diode structures. The addition of a dielectric layer and spiral copper inductor completes the new process. Praetorian EMI filters with ESD protection will integrate as many as 56 discrete components including inductors, diodes and capacitors in a single, 8-channel chip-scale package.
New ASIP products based on the Praetorian process will address EMI filter and ESD protection requirements of emerging high speed, high resolution, color LCD display and camera imager interfaces for wireless handsets.
California Micro Devices claims the new Praetorian ASIP devices will offer industry leading EMI filter performance characteristics including minimal insertion loss, higher cutoff frequencies, faster roll-off and superior attenuation at high frequencies, as well as highly effective ESD protection.
Typical attenuation performance
(Click on Image to Enlarge)
The company explained that current solutions are acceptable for lower data rates typically used by first generation color displays and camera imagers, but don't meet the needs of newer designs that use higher resolution color LCD displays and camera imagers that require higher data rates. As a result, these applications demand EMI filters that effectively attenuate signals in the frequency range from 800 MHz to 2.7 GHz and support data rates as high as 120 Mbit/s. This means an optimal EMI filter for these applications needs to have a high cutoff frequency and an attenuation curve with a very steep roll-off. This new process delivers these characteristics along with a high level of ESD performance, said the company.
Packaged in a chip-scale format, ASIP products based on this new process will be available in fourth quarter 2004. The first products planned for launch include EMI filters for displays and imagers. Prices are not available at this time.
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