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RF/Microwave??

TI kit cuts WI development time

Posted: 03 Oct 2005 ?? ?Print Version ?Bookmark and Share

Keywords:texas instruments? ti? radio frequency? rf? demonstration kit?

Texas Instruments Inc. (TI) recently introduced an easy-to-use radio frequency (RF) transmit signal chain demonstration kit that promises to speed time-to-market by cutting development time, risk and cost in wireless infrastructure (WI) applications. According to the press release, this demonstration kit provides a complete RF transmitter from digital baseband to analog RF, addressing the RF transmission needs of wireless base station or fixed wireless access equipment across all of today's wireless communication standards.

The TSW3000 provides a design solution that would otherwise cost WI base station manufacturers thousands of dollars in parts and labor and several months of design time, said TI.

The TSW3000 evaluation module (EVM) combines the DAC5687 16bit, 500MSPS interpolating digital-to-analog converter (DAC); the CDCM7005 low-phase-noise, low-jitter clock synthesizer and jitter cleaner; the TRF3702 low-noise direct quadrature modulator; and the TRF3750 high-performance, monolithic phase-locked loop (PLL) frequency synthesizer.

Designers can use the kit as a working high-performance transmitter front-end chipset, as a tool to evaluate individual components' performance in an actual transmitter or as a means to verify system performance at the RF signal without incurring additional engineering costs, added the company.

The chipset minimizes noise and distortion, which are key performance issues in WI applications. When interfaced with the TRF3702 in-phase/quadrature (I/Q) modulator, the IQ compensation feature of the DAC5687 allows optimization of phase, gain and DC offset to maximize carrier suppression and sideband rejection, while maximizing power to the modulator. This, in turn, results in an excellent adjacent channel power ratio (ACPR) of 71dB in a single-carrier W-CDMA application at 30.72MHz intermediate frequency (IF) with a RF local oscillator (LO) of 2.14GHz. In a two-carrier W-CDMA application, the chipset delivers an ACPR of 65dB at 92.16MHz IF with a RF LO of 2.14GHz. In addition, the TSW3000 features I/Q modulation from 1.5GHz to 2.5GHz.

The TSW3000 EVM is priced at $499. This includes the EVM, User's Guide, software, termination resistors, datasheet for each component, power supply and parallel port cable.




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