维易科 VEECO RF2051用途：是一款高性能宽带射频锁相环 / 压控振荡器（PLL/VCO）芯片，集成了射频混频器，适用于有线电视前端、数字电视上 / 下变频器、数字电视中继器、多住户单元、蜂窝中继器、频段移位器、超高频 / 甚高频收音机、分集接收器、软件定义无线电、卫星通信、超外差收音机等领域。性能：频率范围为 30MHz 至 2.5GHz，分数 N 合成器可实现 1.5Hz（26MHz 参考时）的超精细频率分辨率。内置低相位噪声压控振荡器，片上晶体维持电路带有可编程负载电容。集成两个高线性度射频混频器及本振缓冲器，混频器输入三阶交调截取点（IP3）达 + 18dBm，混频器偏置可调节以实现低功耗运行，支持全双工模式。电源电压范围 2.7V 至 3.6V，3V 时电流消耗 55mA 至 75mA，采用 3 线串行接口。

Product Name: VEECO RF2051Purpose: It is a high - performance wide - band RF phase - locked loop/voltage - controlled oscillator (PLL/VCO) chip with integrated RF mixers. It is applicable to fields such as CATV head - ends, digital TV up/down converters, digital TV repeaters, multi - dwelling units, cellular repeaters, frequency band shifters, UHF/VHF radios, diversity receivers, software - defined radios, satellite communications, super - heterodyne radios, etc.Performance: The frequency range is from 30MHz to 2.5GHz. The fractional - N synthesizer can achieve an ultra - fine frequency resolution of 1.5Hz (when the reference is 26MHz). It has a built - in low - phase - noise voltage - controlled oscillator, and the on - chip crystal - sustaining circuit comes with programmable load capacitors. It integrates two high - linearity RF mixers and local oscillator buffers. The mixer input third - order intercept point (IP3) reaches +18dBm. The mixer bias can be adjusted for low - power operation, and it supports full - duplex mode. The power supply voltage range is 2.7V to 3.6V, and the current consumption is 55mA to 75mA at 3V. It adopts a 3 - wire serial interface.