描述 Description

The MAX2630/MAX2631/MAX2632/MAX2633 are low-voltage, low-noise amplifiers for use from VHF to microwave frequencies. Operating from a single +2.7V to +5.5V supply, these devices have a flat gain response to 900MHz. Their low noise figure and low supply current make them ideal for receive, buffer, and transmit IF applications.
The MAX2630/MAX2631 are biased internally, eliminating the need for external bias resistors or inductors. The MAX2632/MAX2633 have a user-selectable supply current, which can be adjusted by adding a single external resistor. This allows customized output power and gain according to specific applications requirements. The MAX2631/MAX2633 feature a shutdown pin that allows them to be powered down to less than 1μA supply current. Aside from a single bias resistor required for the MAX2632/MAX2633, the only external components needed for this family of amplifiers are input and output blocking capacitors and a VCC bypass capacitor.
The MAX2630 comes in a 4-pin SOT143 package, requiring minimal board space. The MAX2631/MAX2632 come in small 5-pin SOT23 packages. The MAX2633 comes in a 6-pin SOT23 package.

特性 Features

? Single +2.7V to +5.5V Operation
? Internally Biased (MAX2630/MAX2631)
? Adjustable Bias (MAX2632/MAX2633)
? 6.6mA Supply Current (insensitive to supplyvoltage)
? 1μA Shutdown Current (MAX2631/MAX2633)
? 3.7dB Noise Figure
? 13.4dB Gain
? Ultra-Small SOT Packages

應(yīng)用 Application

? 蜂窩電話
? 無繩電話
? 全球定位系統(tǒng)(GPS)
? ISM無線裝置
? 陸地移動無線裝置
? 個人通信系統(tǒng)(PCS)
? 機(jī)頂盒
? TV調(diào)諧器
? 無線局域網(wǎng)(WLAN)
? 無線本地環(huán)路(WLL)

簡介

MAX2631屬于RF/IF射頻/中頻RFID的射頻放大器。由制造生產(chǎn)的MAX2631射頻放大器在射頻應(yīng)用中，射頻放大器產(chǎn)品可用于信號增益和緩沖。這些產(chǎn)品與通用運(yùn)算放大器的不同之處在于，它們通常適用于更高的頻率，更傾向于提供不可調(diào)節(jié)的固定增益，并且輸入或輸出阻抗值符合常用傳輸線特性阻抗。