AD8349RF/IF射频/中频RFID的RF调制器规格书PDF中文资料

AD8349属于RF/IF射频/中频RFID的RF调制器。由亚德诺半导体技术有限公司制造生产的AD8349RF 调制器射频 (RF) 调制器产品用于通过更改载波的幅度、相位和/或频率，将信息编码到正弦载波信号上。执行反向解调操作的接收设备会选择性地以所需载波频率接收传入信号，从而将载波属性的变化转换回原始形式。这样的配置允许使用通信通道来同时传输多条消息，而彼此之间没有干扰。

PRODUCT DESCRIPTION

The AD8349 is a silicon, monolithic, RF quadrature modulator that is designed for use from 700 MHz to 2700 MHz. Its excellent phase accuracy and amplitude balance enable high performance direct RF modulation for communication systems.

The differential LO input signal is buffered, and then split into an in-phase (I) signal and a quadrature-phase (Q) signal using a polyphase phase splitter. These two LO signals are further buffered and then mixed with the corresponding I channel and Q channel baseband signals in two Gilbert cell mixers. The mixers’ outputs are then summed together in the output amplifier. The output amplifier is designed to drive 50 Ω loads.

FEATURES

Output frequency range: 700 MHz to 2700 MHz

Modulation bandwidth: dc to 160 MHz (large signal BW)

1 dB output compression: 5.6 dBm @ 2140 MHz

Output disable function: output below –50 dBm in < 50 ns

Noise floor: –156 dBm/Hz

Phase quadrature error: 0.3 degrees @ 2140 MHz

Amplitude balance: 0.1 dB

Single supply: 4.75 V to 5.5 V

Pin compatible with AD8345/AD8346s

16-lead, exposed-paddle TSSOP package

APPLICATIONS

Cellular/PCS communication systems infrastructure WCDMA/CDMA2000/PCS/GSM/EDGE

Wireless LAN/wireless local loop

LMDS/broadband wireless access systems