Myrtle Beach, S.C. - AVX Corp. claims its new series of surface acoustic wave (SAW) filters for mobile phones features the industry's smallest chip scale package (CSP) RF SAW filter. The SF16 device measures 1.6 mm x 1.4 mm x 0.6 mm.
Applications for the SF16 Series filters include PCS (1.9GHz), cellular (800MHz) and GPS (1.5GHz) band receptions. Optimized for CDMA mobile communications, the new line is fully compatible with Qualcomm's MSM6000TM Series CDMA chipsets for mobile phones.
Delivering advanced voice quality with low loss and high attenuation characteristics, the attenuation for the PSC SF16 device ranges from 1850 to 6,000 MHz. Attenuation for cellular ranges from 824 to 3,000 MHz, and GPS from 1475 to 6,000 MHz. Bandwidth insertion loss for PCS, cellular and GPS, is 4.1 dB, 3.0 dB and 1.8 dB, respectively with bandwidth ripples of 2.0 dB, 1.5 dB and GPS 0.7 dB, respectively.
"With the global market for mobile phones rapidly advancing to include such enhanced features as built-in cameras, high-resolution displays and high-speed data transmission capabilities, there is increasing demand for SAW filters that can maintain high voice quality while supporting these new features and meeting demands of reduced size and weight," said Taro Hishinuma, AVX product manager, in a statement.
As part of the product redesign, AVX replaced the previous ceramic packaging with a flip-chip style mounting of the miniature SAW chip. After sealing with a flexible external resin and lead-free hermetic soldering, the device is protected against mechanical shock and harsh environmental conditions.
Use of a ceramic substrate and chip redesign reduces parasitic impedance and enables superior levels of attenuation in high frequency bandwidths above 3 GHz, said the company.
Typical pricing for the SF16 SAW filter is in the $0.30 range, depending on volume. Delivery is from stock to 12 weeks. Samples are available immediately.
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