Texas Instruments Launches Four-channel Wideband Digital Repeater Evaluation Module

(Top News, 21 Feb 2008)

Texas Instruments Inc. (TI) has developed the TSW4100—a four-channel wideband digital repeater evaluation module (EVM) that isolates up to four non-contiguous spectrum bands, each as wide as 35MHz. The TSW4100 also offers a digital filter design tool for wireless basestation OEMs and can be used to rapidly implement a proof-of-concept repeater design, reducing time to market by up to 80 percent.

The TSW4100 digital repeater EVM uses digital signal processing techniques to digitally filter wideband input signals and reduce spectrum interference. With a complete IF transceiver signal chain implementation and a digital filter design tool, TI's TSW4100 digital repeater demonstration kit allows wireless infrastructure OEMs to significantly reduce development time for wireless repeater applications.

At the heart of the TSW4100 TI's GC5016 digital upconverter (DUC)/digital downconverter (DDC), a digital signal processing device that can be configured to offer a four-, two-, or one-channel digital repeater. The TSW4100 EVM includes Graphical User Interface (GUI) software to simplify programming and digital filter configuration options. Parameters like channel bandwidth and gain, as well as signal ripple, shape and other functions can be easily changed by simply modifying an entry in the filter configuration tool's GUI. In addition, the TSW4100 demonstration kit features TI's analog solutions including the ADS5545 14-bit 170MSPS analog-to-digital converter (ADC), the DAC5688 Dual 16-bit 800MSPS interpolating digital-to-analog converter (DAC), and the CDCM7005 clock generation and distribution device.

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