PRODUCT DESCRIPTION

The AD8345 is a silicon RFIC quadrature modulator, designed for use from 140 MHz to 1000 MHz. Its excellent phase accuracy and amplitude balance enable the high performance direct modulation of an IF carrier. The AD8345 accurately splits the external LO signal into two

quadrature components through the polyphase phase splitter network. The I and Q LO components are mixed with the baseband I and Q differential input signals. Finally, the outputs

of the two mixers are combined in the output stage to provide a single-ended 50 Ω drive at VOUT.

FEATURES

140 MHz to 1000 MHz operating frequency

+2.5 dBm P1dB @ 800 MHz

?155 dBm/Hz noise floor

0.5 degree RMS phase error (IS95)

0.2 dB amplitude balance

Single 2.7 V to 5.5 V supply

Pin-compatible with AD8346 and AD8349

16-lead TSSOP_EP package

APPLICATIONS

Cellular communication systems

W-CDMA/CDMA/GSM/PCS/ISM transceivers

Fixed broadband access systems LMDS/MMDS

Wireless LAN

Wireless local loop

Digital TV/CATV modulators

Single sideband upconverter

AD8345屬于RF/IF，射頻/中頻和 RFID > RF 調(diào)制器。亞德諾半導(dǎo)體技術(shù)有限公司制造生產(chǎn)的AD8345RF 調(diào)制器射頻 (RF) 調(diào)制器產(chǎn)品用于通過(guò)更改載波的幅度、相位和/或頻率，將信息編碼到正弦載波信號(hào)上。執(zhí)行反向解調(diào)操作的接收設(shè)備會(huì)選擇性地以所需載波頻率接收傳入信號(hào)，從而將載波屬性的變化轉(zhuǎn)換回原始形式。這樣的配置允許使用通信通道來(lái)同時(shí)傳輸多條消息，而彼此之間沒(méi)有干擾。