Milpitas, Calif. California Micro Devices has extended its family of packaged Praetorian and Centurion EMI filter Application Specific Integrated Passive (ASIP) devices that feature both EMI filtering and electrostatic discharge (ESD) protection in the thinnest and most compact packages available for use in mobile handsets.
The CM16XX series ASIP devices, which include the CM1690, CM1630, CM1631, CM1636, and CM1637 series, are available in 0.4-mm pitch uDFN packages with a typical thickness of 0.50 mm, which provides a space savings of up to 42 percent compared to existing 0.5-mm pitch DFN packages.
The CM16XX series devices are pin compatible Centurion RC and Praetorian LC architecture EMI filter ASIP devices. These devices are said to provide excellent attenuation in the frequency band from 800 MHz to 3.0 GHz. In addition, they are said to exhibit superior filter performance across all channels thanks to the large area ground pad on the bottom of the uDFN package which minimizes ground inductance.
The CM16XX series is backward compatible with CMD's previous offerings of 0.4-mm pitch TDFNs as well as its competitors' offerings of TDFN and DFN packages, which means that engineers can significantly reduce the thickness of their mobile products without having to redesign their PC boards. Each of the new devices provides ESD protection up to ±15 kV contact discharge per IEC61000-4-2 Level 4 specification, which makes them suitable for virtually all mobile applications.
The Praetorian and Centurion uDFN product families are available in 4-, 6-, and 8-channel configurations. The 4-channel devices require 42 percent less board space than competing filters using 0.5-mm pitch TDFN packages. The 6-channel and 8-channel versions offer about a 30 percent space savings. The package dimensions of the 4-, 6- and 8-channel versions are: 1.7 x 1.35 mm (8 leads), 2.5 x 1.35 mm (12 leads) and 3.3 x 1.35 mm (16 leads), respectively.
General specifications for the series are as follows:
- The CM1690 (Praetorian LC) offers a typical frequency cutoff of 330 MHz and a -1 dB insertion loss. Attenuation is -35 dB (1 GHz), -45 dB (2 GHz) and -43 dB (3 GHz).
- The CM1630 (Centurion RC) offers a typical frequency cutoff of 175 MHz and a -6 dB insertion loss. Attenuation is -30 dB (1 GHz), -40 dB (2 GHz) and -35 dB (3 GHz).
- The CM1631 (Centurion RC) offers a typical frequency cutoff of 100 MHz and a -6 dB insertion loss. Attenuation is -40 dB (1 GHz), -45 dB (2 GHz) and -40 dB (3 GHz).
- The CM1636 (Centurion RC) offers a typical frequency cutoff of 105 MHz and a -10 dB insertion loss. Attenuation is -40 dB (1 GHz), -40 dB (2 GHz) and -37 dB (3 GHz).
- The CM1637 (Centurion RC) offers a typical frequency cutoff of 200 MHz and a -10 dB insertion loss. Attenuation is -35 dB (1 GHz), -43 dB (2 GHz) and -40 dB (3 GHz).
Click the link for more information about Calm Micro's EMI filters.
Sample pricing ranges between $0.32 and $0.61 each in quantities of 1,000 depending on channel configuration. They are only available in a lead-free version.
California Micro Devices, 1-408-263-3214, www.calmicro.com