DALLAS Texas Instruments Incorporated introduced an easy-to-use radio frequency (RF) transmit signal chain demonstration kit that speeds time to market by cutting development time, risk, and cost in wireless infrastructure applications. The 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. (See www.ti.com/sc05200 for more information.)
The TSW3000 evaluation module (EVM) combines the DAC5687 16-bit, 500-MSPS 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 component's performance in an actual transmitter, or as a means to verify system performance at the RF signal without incurring additional engineering costs.
The chipset minimizes noise and distortion, which are key performance issues in wireless infrastructure 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 adjacent channel power ratio (ACPR) of 71 dB in a single-carrier WCDMA application at 30.72 MHz intermediate frequency (IF) with a RF local oscillator (LO) of 2.14 GHz. In a two-carrier WCDMA application, the chipset delivers an ACPR of 65 dB at 92.16 MHz IF with a RF LO of 2.14 GHz. In addition, the TSW3000 features I/Q modulation from 1.5 GHz to 2.5 GHz.
The TSW3000 provides a design solution that would otherwise cost base station manufacturers thousands of dollars in parts and labor and several months of design time. In addition, since all the components are manufactured and supported by TI, designers who use the kit as the basis for a reference design can enjoy one-stop shopping and take full advantage of TI’s systems expertise and complete array of products, tools and technical support for high-speed designs.
The TSW3000 is available now from TI. The price of $499 includes the EVM, User’s Guide, software, termination resistors, datasheet for each component, power supply, and parallel port cable.