Avago MGA-30689 pHEMT线性增益放大方案

Avago 公司的MGA-30689是40MHz - 2600MHz 平坦增益高度线性放大器,采用0.25um GaAs 增强模式pHEMT工艺指制造,OIP3达到22dBm. 40MHz 到2600MHz的增益为14dB +/-0.5dB,不需要RF匹配元件,MGA-30689可应用在IF放大器,RF驱动放大器和通用增益区块.本文介绍了MGA-30689的主要特性,应用电路以及40MHz–2GHz , 0.2GHz–2.6GHz和1.5GHz–2.6GHz的应用电路元件值与演示板布局图.

MGA-30689:40MHz - 2600MHz Flat Gain High Linearity Gain Block

Avago Technologies’ MGA-30689 is a flat gain, high linearity, low noise, 22dBm Gain Block with good OIP3 achieved through the use of Avago Technologies’ proprietary 0.25um GaAs Enhancement-mode pHEMT process.

The device required simple dc biasing components to achieve wide bandwidth performance. The temperature compensated internal bias circuit provides stable current over temperature and process threshold voltage variation.

The MGA-30689 is housed inside a standard SOT89 package (4.5 x 4.1 x 1.5 mm).

MGA-30689主要特性:

Flat Gain 14dB +/-0.5dB, 40MHz to 2600MHz

High linearity

Built in temperature compensated internal bias circuitry

No RF matching components required

GaAs E-pHEMT Technology[1]

Standard SOT89 package

Single, Fixed 5V supply

Excellent uniformity in product specifications

MSL-1 and Lead-free halogen free

High MTTF for base station application

MGA-30689主要指标:

900MHz; 5V, 104mA (typical)

– 14.3 dB Gain

– 43 dBm Output IP3

– 3.0 dB Noise Figure

– 22.3 dBm Output Power at 1dB gain compression

1950MHz, 5V, 104mA (typical)

– 14.6 dB Gain

– 40 dBm Output IP3

– 3.3 dB Noise Figure

– 22.5 dBm Output Power at 1dB gain compression

MGA-30689应用:

IF amplifier, RF driver amplifier

General purpose gain block



图1.MGA-30689应用电路

表1:40MHz–2GHz 应用电路元件值



表2:0.2GHz–2.6GHz 应用电路元件值



表3:1.5GHz–2.6GHz 应用电路元件值





图2.演示板布局图