原创 Avago ALM-1522低噪音高线性平衡放大方案

 2009-9-20 10:09  1703 5 5 分类: 测试测量


作者：时间：2009-04-28 来源:

Avago 公司的ALM-1522是700-1100MHz 低噪音高增益高线性平衡放大器模块,采用0.25μm GaAs 增强模式pHEMT技术。ALM-1522在900MHz时增益可达31dB,噪音为0.6dB, 27.7 dBm OP1dB, 43 dBm OIP3,而反相隔离为45dB,广泛用在GSM, CDMA, WCDMA和TD-SCDMA基站的驱动放大器以及TMA与前端LNA。本文介绍了ALM-1522的族要特性和指标, ALM-1522E评估板电路框图和布局图以及平衡放大器评估板电路图与布局图。　　ALM-1522:700–1100 MHz Low Noise, High Gain, High Linearity Balanced Amplifier Module Avago Technologies’ ALM-1522 is a low noise, high gain and high linearity balanced amplifier module operating in the 700MHz to 1100MHz frequency range. The exception¬al noise and linearity performance are achieved through the use of Avago Technologies’ proprietary 0.25um GaAs Enhancement-mode pHEMT process. 　　The ALM – 1522 is housed in a miniature 5.0 x 6.0 x 1.1 mm3 22-lead multiple-chips-on-board (MCOB) modu m8le package. The compact footprint and low profile makes the ALM-1522 an ideal choice for Wireless Infrastructure Basestation Tower-Mounted-Amplifiers (TMA), Radiocard Receivers, Multi-Carrier Driver Amplifiers for GSM, CDMA, W-CDMA, TD-SCDMA base stations operating in the 700MHz to 1100MHz band. ALM-1522主要特性: Low noise figure High linearity and OP1dB 5V supply Adjustable current for optimum NF or OIP3 High gain : 31dB Shutdown function GaAs E-pHEMT Technology Miniature package size : 5.0 x 6.0 x 1.1 mm3 Tape-And-Reel packaging option available MSL-3 and Lead-free Meets ESD 100V Machine Model per EIA/JESD22-A115, and 500V Human Body Model per EIA/JESD22-A114 Can be used in single-ended or balanced configuration Unconditionally stable Green/RoHS Compliant ALM-1522指标: 900 MHz; 5V, Quiescent Idd="240" mA (typ) per channelVctrl at 2.7V 31 dB Gain 0.6 dB Noise figure 27.7 dBm OP1dB 43 dBm OIP3 45 dB Reverse Isolation 应用: TMA & Front End LNA for GSM, CDMA, W-CDMA, TD-SCDMA base stations. Driver amplifier for GSM, CDMA, W-CDMA, TD-SCDMA base stations. 图1.ALM-1522E评估板电路框图图2.ALM-1522E评估板布局图图3.平衡放大器评估板电路图图4.推荐的平衡放大器评估板布局图