35.42MHz SAW Filter For GPS Receivers

The DW9255 is a Surface Acoustic Wave (SAW) bandpass Filter for use with Zarlink Semiconductor's GP2000 Global Positioning System (GPS) receiver chip-set. The GP2000 GPs chip set from Zarlink Semiconductor comprises the GP2010 and GP2015 RF front end ICs along with the GP2021 12-channel GPs correlator. It is pre-tuned to the exact 2nd IF Filter requirements of the Zarlink GP2010 & GP2015 Rf Front-End devices, with a centre-frequency of 35.42MHz. The response is tuned for a flat passband, steep stopband and uniform passband group-delay with 3 external inductors. The device is realised on a Lithium Tantalate substrate and housed in a small leadless ceramic Surface Mount package. The DW9255 gives significant improvement in correlated GPs Signal-to-Noise Ratio (SNR) performance compared to conventional LC bandpass Filter schemes. This aids satellite signal acquisition and tracking capability from the Zarlink GP2000 GPs chip-set. This device effectively Filters out-of-band (unwanted) noise in the GPs signal. The Automatic Gain Control (AGC) within the Zarlink GP2010 and GP2015 Rf Front-End devices will then operate only on in-band noise for optimum gain and superior correlated GPs signal strength. By Dynex Semiconductor
DW9255 's PackagesDW9255 's pdf datasheet
DW9255 pdf datasheet download


DW9255 Pinout, Pinouts
DW9255 pinout,Pin out
This is one package pinout of DW9255,If you need more pinouts please download DW9255's pdf datasheet.

DW9255 Application circuits
DW9255 circuits
This is one application circuit of DW9255,If you need more circuits,please download DW9255's pdf datasheet.


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