| Avago MGA-86576 MMIC放大方案 |
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| 作者:未知 来源:Avago公司 点击数:152 更新时间:2008-6-5 |
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Avago公司的 MGA-86576是1.5–8 GHz低噪音GaAs MMIC放大器,不需要阻抗匹配就可用作高性能2 dB NF增益区块,在输入端简单地串接电感,就可使器件在4GHz时的噪音降低到1.6 dB.因此, MGA-86576广泛应作ISM频段的LNA或增益放大级,GPS接收器的前端放大器,PCN和MMDS的LNA或增益放大级,C波段的卫星接收器以及仪表宽带放大器.本文介绍了MGA-86576的主要性能, 方框图, 放大演示电路图以及演示放大器布局图.
MGA-86576 1.5–8 GHz Low Noise GaAs MMIC Amplifier Avago’s MGA-86576 is an economical, easy-to-use GaAs MMIC amplifier that offers low noise and excellent gain for applications from 1.5 to 8 GHz.
The MGA-86576 may be used without impedance matching as a high performance 2 dB NF gain block. Alternatively, with the addition of a simple series inductor at the input, the device noise figure can be reduced to 1.6dB at 4 GHz.
The circuit uses state-of-the-art PHEMT technology with self-biasing current sources, a source-follower interstage, resistive feedback, and on chip impedance matching networks.
A patented, on-chip active bias circuit allows operation from a single +5 V power supply. Current consumption is only 16 mA. These devices are 100% RF tested to assure consistent performance. 主要特性: 1.6 dB Noise Figure at 4 GHz 23 dB Gain at 4 GHz +6 dBm P1dB at 4 GHz Single +5 V Bias Supply
应用: LNA or Gain Stage for 2.4 GHz and 5.7 GHz ISM Bands Front End Amplifier for GPS Receivers LNA or Gain Stage for PCN and MMDS Applications C-Band Satellite Receivers Broadband Amplifier for Instrumentation

图1. MGA-86576方框图

图2. MGA-86576放大演示电路图.

图3.完整的MGA-86576演示放大器布局图.[1]
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