Tiny SAW filters add a sense of balance
A NDK product story
Edited by the Electronicstalk editorial team Jan 17, 2006
NDK has released a series of 2.0 x 1.6mm SAW filters that go from unbalanced to balanced operation for mobile phone applications.
NDK has released a series of 2.0 x 1.6mm SAW filters that go from unbalanced to balanced operation for mobile phone applications.
The WF752C1960PD is for PCS 1900 applications with a nominal frequency of 1960MHz.
The WF753C0881PD is for GSM850 applications with a nominal frequency of 881.5MHz.
The WF755C0942PD is for EGSM900 applications with a nominal frequency of 942.5MHz.
The WF754C1842PD is for DCS1800 applications with a nominal frequency of 1842.5MHz.
Typical insertion losses are 2.3, 1.9, 2.3 and 2.2dB, respectively, and typical amplitude ripple is 0.7, 0.7, 0.9, and 0.9dB, respectively.
These SMD devices are in a miniature 2.0 x 1.6mm plastic package and are only 0.6mm high.
They operate in a temperature range of -30 to +85C.
Their input impedance is nominally 50ohm (unbalanced) with an output impedance of 150ohm (balanced).
These SAW filters are lead-free, RoHS compliant, and designed to withstand the requirements of reflow soldering using lead-free solder.
"Mobile phone makers must develop multiple phones to meet worldwide mobile phone standards".
"Designers can utilise this standard series of 2.0 x 1.6 SAW Filters to meet the frequency requirements of four major mobile phone standards", said Mike Walczak, President, NDK America.
Delivery for these SAW filters is 12 weeks.
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