南京回收手机CPU138-6133-6231求购
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                    南京回收工厂库存手机CPU     Q：267-066-5152   李强         回收手机cpu首选捷克凯，专业回收手机cpu的公司，价格合理，信守承诺，安全快捷，服务热情，包您满意!RFT6100 Device DescriptionThe RFT6100 device is a direct conversionchipset that integrates all the upconversion andmodulation functionality necessary forCDMA-mode phones operating in cellular andPCS bands. This transmit chip consists of twosets of I/Q modulators, one for cellular and onefor the PCS band. The baseband I/Q input from the MSM directlymodulates the cellular or PCS carrier derived from the respective LOgeneration circuit.Both the cellular and PCS output drive their own VGA with a gaincontrol range of 85 dB. A final cellular driver amplifier provides amodulated RF output.To accommodate split-band and filtering, the PCS VGA drives twooutput amplifiers that can be selected independently orsimultaneously via an input selectable switch. All RF outputs havefully integrated 50-ohm matching networks. Integrated on theRFT6100 is the receiver phase locked loop (PLL), the transmitPLL and the entire transmit VCO including resonant components.The VCO drives the LO generation block, which in turn generatesthe required local-oscillator signal for all CDMA bands of。