Digitizers Grab IFs To 400 MHz

April 20, 2011
The KWS-800 series of intermediate-frequency (IF) digitizers from Kaben Wireless Silicon provides customers with several options for sampling signals: at 80 or 120 MHz with 14-b resolution, or at 400 MHz with 10-b resolution. The filter can be programmed ...

The KWS-800 series of intermediate-frequency (IF) digitizers from Kaben Wireless Silicon provides customers with several options for sampling signals: at 80 or 120 MHz with 14-b resolution, or at 400 MHz with 10-b resolution. The filter can be programmed to be either a lowpass or bandpass type. The filter center frequency, bandwidth, passband ripple, transition band, and stopband attenuation are all programmable using a serial interface. The digitizers combine the firm's patented sampled-IF (SIF) filter technology with several new, high-performance analog-to-digital converters (ADCs).

According to Kaben's Director of Marketing, Bill Bereza, "The programmability of our precision, on-chip filter, combined with the ADC, facilitates reconfigurable radio design and enables SoC manufacturers to integrate multimode receivers onto a single IC. System engineers will have programmable control over the filter's characteristics, including center frequency, bandwidth, passband ripple, transition band and stopband attenuation."

Kaben has created a new type of product by combining the functions of data conversion and precision filtering. Combining the SIF filter and ADC eliminates challenges associated with the interface between the RF and the mixed-signal domains.

About the Author

Jack Browne | Technical Contributor

Jack Browne, Technical Contributor, has worked in technical publishing for over 30 years. He managed the content and production of three technical journals while at the American Institute of Physics, including Medical Physics and the Journal of Vacuum Science & Technology. He has been a Publisher and Editor for Penton Media, started the firm’s Wireless Symposium & Exhibition trade show in 1993, and currently serves as Technical Contributor for that company's Microwaves & RF magazine. Browne, who holds a BS in Mathematics from City College of New York and BA degrees in English and Philosophy from Fordham University, is a member of the IEEE.

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