MAX2656中文资料1575MHz/1900MHz、可变IP3、低噪声放大器数据手册ADI规格书

描述 Description

The MAX2654/MAX2655/MAX2656 high third-order intercept point (IP3), low-noise amplifiers (LNAs) are designed for applications in GPS, PCS, WLL, and satellite phone systems. The MAX2654/MAX2655/MAX2656 incorporate on-chip internal output matching to 50Ω, eliminating the need for external matching components. A shutdown feature in the MAX2654/MAX2655 reduces the operating current to 0.1µA, eliminating the need for an external supply switch.
The MAX2654 operates in the GPS frequency of 1575MHz with 15.1dB of gain, 1.5dB noise figure, and only consumes 5.8mA. The MAX2655 is designed with high-input IP3 to improve operation in cellular applications where the cellular power amplifier leaks into the GPS receiver. The MAX2656 is designed for PCS phone applications with 13.5dB of gain in high-gain mode and 0.8dB of gain in low-gain mode (selected by a logic control) and 1.9dB noise figure.
The IP3 of MAX2655/MAX2656 is adjustable by a single external bias resistor (RBIAS), allowing supply current to be optimized for a specific application.
The MAX2654/MAX2655/MAX2656 operate from a +2.7V to +5.5V single supply and are available in the miniature 6-pin SC70 package.

特性 Features

·\tLow Noise Figure

·\tMAX2654: 1.5dB at 1575MHz
·\tMAX2655: 1.45dB at 1575MHz
·\tMAX2656: 1.9dB at 1960MHz

·\tHigh Gain

·\tMAX2654: 15.1dB at 1575MHz
·\tMAX2655: 14.1dB at 1575MHz
· MAX2656: 13.5dB at 1960MHz

·\t12.7dB Gain Step (MAX2656 only)
·\tIntegrated 50Ω Output Matching
·\tVariable IP3 Set by One Bias Resistor (MAX2655/MAX2656 only)
·\t0.1µA Shutdown Mode (MAX2654/MAX2655 only)
·\t+2.7V to +5.5V Single-Supply Operation
·\tUltra-Small 6-Pin SC70 Package

应用 Application

·DCS/PCS蜂窝电话
·蜂窝电话中的GPS接收机
·卫星电话
·无线本地环路(WLL)

简介

MAX2656属于RF/IF射频/中频RFID的射频放大器。由制造生产的MAX2656射频放大器在射频应用中，射频放大器产品可用于信号增益和缓冲。这些产品与通用运算放大器的不同之处在于，它们通常适用于更高的频率，更倾向于提供不可调节的固定增益，并且输入或输出阻抗值符合常用传输线特性阻抗。