Hittite HMC792LP4E DC-6 GHz数字衰减方案

Hittite 公司的HMC792LP4E是 DC - 6 GHz 6位数字衰减器,增量 0.25 dB LSB,最大衰减到15.75dB,IP3输出高达+55dBm,2.0GHz的插入损耗为1.8dB,单电源3V或5V工作,主要用于蜂窝/3G基础设备, WiBro / WiMAX / 4G,微波无线电和VSAT,测试设备和传感器,IF和RF应用.本文介绍HMC792LP4E主要特性, 功能方框图, 应用电路, 评估板PCB布局图和材料列表.

HMC792LP4E: 0.25 dB LSB GaAs MMIC 6-BIT DIGITAL ATTENUATOR, DC - 6 GHz The HMC792LP4E is a broadband 6-bit GaAs IC Digital Attenuator in a low cost leadless SMT package. This versatile digital attenuator incorporates off-chip AC ground capacitors for near DC operation, making it suitable for a wide variety of RF and IF applications.

The dual mode control interface is CMOS/TTL compatible, and accepts either a three wire serial input or a 6 bit parallel word. The HMC792LP4E also features a user selectable power up state and a serial output port for cascading other Hittite serial controlled components. The HMC792LP4E is housed in a RoHS compliant 4x4 mm QFN leadless package, and requires no external matching components.

HMC792LP4E主要特性:

0.25 dB LSB Steps to 15.75 dB

Power-Up State Selection

High Input IP3: +55 dBm

Low Insertion Loss: 1.8 dB @ 2.0 GHz
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