TI TRF372017无线IQ解调解决方案

TI公司的TRF372017是高性能直解上变换器件,集成了高度线性低噪音IQ解调器和整数-分数PLL/VCO,VCO集成了分频器,可以在300MHz–4800MHz频率范围内连续调谐.通路功率-8dBm时的单载波WCDMA ACPR为76dBc,OIP3为26dBm,P1dB为11.5dBm,主要应用在无线基础设备如CDMA,TDMA和LTE,无线局部回路,点对点无线接入和无线MAN宽带收发器.本文介绍了TRF372017主要特性, 功能方框图, 应用电路图以及TRF372017 EVM评估板主要特性和电路图.

TRF372017 is a high performance direct up-conversion device, integrating a high linearity, low noise IQ modulator and an integer-fractional PLL/VCO. The VCO uses integrated frequency dividers to achieve a wide, continuous tuning range of 300MHz–4800MHz. The LO is available as an output with independent frequency dividers. The device also accepts input from an external LO or VCO. The modulator baseband inputs can be biased either internally or externally. Internal DC offset adjustment enables carrier cancellation. The device is controlled through a 3 wire serial programming interface (SPI). A control pin invokes power-save mode to reduce power consumption while keeping the VCO locked for fast startup.

TRF372017主要特性:

• Fully Integrated PLL/VCO and IQ Modulator

• LO Frequency from 300MHz to 4.8GHz

• 76-dBc Single-Carrier WCDMA ACPR at –8dBm Channel Power
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