AD834RF/IF射頻/中頻RFID的RF調(diào)制器規(guī)格書(shū)PDF中文資料

AD834屬于RF/IF射頻/中頻RFID的RF調(diào)制器。由亞德諾半導(dǎo)體技術(shù)有限公司制造生產(chǎn)的AD834RF 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。

GENERAL DESCRIPTION

The AD834 is a monolithic, laser-trimmed four-quadrant analog multiplier intended for use in high frequency applications, with a transconductance bandwidth (RL = 50 Ω) in excess of 500 MHz from either of the differential voltage inputs. In multiplier modes, the typical total full-scale error is 0.5, dependent on the application mode and the external circuitry. Performance is relatively insensitive to temperature and supply variations due to the use of stable biasing based on a band gap reference generator and other design features.

To preserve the full bandwidth potential of the high speed bipolar process used to fabricate the AD834, the outputs appear as a differential pair of currents at open collectors. To provide a single-ended ground referenced voltage output, some form of external current-to-voltage conversion is needed. This may take the form of a wideband transformer, balun, or active circuitry such as an op amp. In some applications (such as power measurement), the subsequent signal processing may not need to have high bandwidth.

FEATURES

DC to >500 MHz operation

Differential ±1 V full-scale inputs

Differential ±4 mA full-scale output current

Low distortion (≤0.05 for 0 dBm input)

Supply voltages from ±4 V to ±9 V

Low power (280 mW typical at VS = ±5 V)

APPLICATIONS

High speed real time computation

Wideband modulation and gain control

Signal correlation and RF power measurement

Voltage controlled filters and oscillators

Linear keyers for high resolution television

Wideband true RMS