标题: ALM-1612 [打印本页] 作者: 45676765dd 时间: 2011-3-9 20:45 标题: ALM-1612 【用 途】 【性能 参数】 是高增益低噪音 1.575GHz GPS放大器,集成了低噪音放大器(LNA)和GPS FBAR滤波器,具有可变电流/关断功能. ALM-1612采用GaAs pHEMT工艺制造,具有非常低的噪音,典型值为0.95dB, 典型增益为18.2dB, IIP3 = +2 dBm, IP1dB = -8 dBm,可用于GPS前端接收模块. ALM-1612的主要特性和指标, 应用电路, 演示板和演示板所用元件表以及散射参数和测量参考平面： 1.575GHz GPS High-Gain Low Noise Amplifier with Integrated FiLTEr and Variable Current/Shutdown Function Avago Technologies’ ALM-1612 is a GPS front-end module that combines a low-noise amplifier (LNA) with a GPS FBAR filter. The LNA uses Avago Technologies’ proprietary GaAs Enhancement-mode pHEMT process to achieve high gain with very low noise figure and high linearity. Noise figure distribution is very tightly controlLED. A CMOS-compati?ble shutdown PIN is included either for turning the LNA on/off, or for current adjustment. The integrated filter utilizes an Avago Technologies’ leading-edge FBAR filter for exceptional rejection at Cell/PCS-Band frequencies. The low noise figure and high gain, coupled with low current consumption make it suitable for use in critICal low-power GPS applications or during low-battery situations. ALM-1612主要特性: Very Low Noise Figure: 0.95 dB typ. High Gain: 18.2 dB typ. High IIP3 and IP1dB Exceptional Cell/PCS-Band rejection Advanced GaAs E-pHEMT & FBAR Technology Low external component count Shutdown current: 3kV; All other pins: ESD MachineModel = 70V, ESD Human Body Model = 350V Meets MSL3 Useable down to 1.8V supply Adjustable current via single external resistor/voltage Small PACkage dimension: 3.3(L)x2.1(W)x1(H) mm3 ALM-1612主要指标(25度C典型性能) At 1.575GHz, Vdd = 2.7V, Idd = 6.0mA Gain = 18.2 dB NF = 0.95 dB IIP3 = +2 dBm, IP1dB = -8 dBm S11 = -9 dB, S22 = -14 dB Cell-Band Rejection: 69 dBc PCS-Band Rejection: 67 dBc 应用: GPS Receiver Front-end Module图1.ALM-1612应用电路图2.ALM-1612演示板ALM-1612演示板所用元件表图3. ALM-1612应用电路图图4.ALM-1612散射参数和测量参考平面【代换】【ALM-1612的】
图1.ALM-1612应用电路
图2.ALM-1612演示板ALM-1612演示板所用元件表
图3. ALM-1612应用电路图
图4.ALM-1612散射参数和测量参考平面【代换】【ALM-1612的】