Maxim MAX2051高线性上/下变换混频方案

Maxim公司的MAX2051是高线性上/下变换混频器,频率范围从850MHz 到 1550MHz,可以提供+35dBm 输入IP3, 7.8dB 噪音(NF)以及7.4dB的变换损耗. MAX2051还具有极好的互调抑制性能(RF电平-14dBm时大于77dBc),广泛应用在视频点播,线缆调制解调器终端系统,微波链路,无线基站和WiMAX基站等.本文介绍了MAX2051的主要特性, 功能方框图以及应用电路和所用元件材料表.

The MAX2051 high-linearity, up/downconversion mixer provides +35dBm input IP3, 7.8dB noise figure (NF), and 7.4dB conversion loss for 850MHz to 1550MHz wireless infrastructure and multicarrier cable head-end downstream video, video-on-demand (VOD), and cable modem termination systems (CMTS) applications. The MAX2051 also provides excellent suppression of spurious intermodulation products (> 77dBc at an RF level of -14dBm), making it an ideal downconverter for DOCSIS 3.0 and Euro DOCSIS cable head-end systems. With an LO circuit tuned to support frequencies ranging from 1200MHz to 2250MHz, the MAX2051 is ideal for highside LO injection applications over an IF frequency range of 50MHz to 1000MHz.

In addition to offering excellent linearity and noise performance, the MAX2051 also yields a high level of component integration. The device integrates baluns in the RF and LO ports, which allow for a single-ended RF input and a single-ended LO input. The AX2051 requires a typical LO drive of 0dBm and a supply current guaranteed to below 130mA.

The MAX2051 is available in a compact 5mm x 5mm, 20-pin thin QFN package with an exposed pad. Electrical performance is guaranteed over the extended temperature range, from TC = -40℃ to +85℃.

The MAX2051 high-linearity, up/downconversion mixer provides +35dBm input IP3, 7.8dB noise figure (NF), and 7.4dB conversion loss for 850MHz to 1550MHz wireless infrastructure and multicarrier cable head-end downstream video, video-on-demand (VOD), and cable modem termination systems (CMTS) applications. The MAX2051 also provides excellent suppression of spurious intermodulation products (> 77dBc at an RF level of -14dBm), making it an ideal downconverter for DOCSIS 3.0 and Euro DOCSIS cable head-end systems. With an LO circuit tuned to support frequencies ranging from 1200MHz to 2250MHz, the MAX2051 is ideal for highside LO injection applications over an IF frequency range of 50MHz to 1000MHz.

In addition to offering excellent linearity and noise performance, the MAX2051 also yields a high level of component integration. The device integrates baluns in the RF and LO ports, which allow for a single-ended RF input and a single-ended LO input. The MAX2051 requires a typical LO drive of 0dBm and a supply current guaranteed to below 130mA. The MAX2051 is available in a compact 5mm x 5mm, 20-pin thin QFN package with an exposed pad.

Electrical performance is guaranteed over the extended temperature range, from TC = -40℃to +85℃.

MAX2051主要应用:

Video-on-Demand and DOCSIS-Compatible Edge QAM Modulation

Cable Modem Termination Systems

Microwave and Fixed Broadband Wireless Access

Microwave Links

Military Systems

Predistortion Receivers

Private Mobile Radios

Integrated Digital Enhanced Network (iDEN)

Base Stations

WiMAX Base Stations and Customer Premise Equipment

Wireless Local Loop



图1.MAX2051功能方框图



图2.MAX2051应用电路

MAX2051应用电路材料表: