AD8340ACPZ-WPRF/IF射频/中频RFID的RF调制器规格书PDF中文资料

AD8340ACPZ-WP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AD8340ACPZ-WPRF 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。

FEATURES

Cartesian amplitude and phase modulation

700 MHz to 1.0 GHz frequency range

Continuous magnitude control of −2 dB to −32 dB

Continuous phase control of 0° to 360°

Output third-order intercept 24 dBm

Output 1 dB compression point 11 dBm

Output noise floor −149 dBm/Hz at full gain

Adjustable modulation bandwidth up to 230 MHz

Fast output power disable

4.75 V to 5.25 V single-supply voltage

APPLICATIONS

RF PA linearization/RF predistortion

Amplitude and phase modulation

Variable attenuators and phase shifters

CDMA2000, GSM/EDGE linear power amplifiers

Smart antennas

GENERAL DESCRIPTION

The AD8340 vector modulator performs arbitrary amplitude and phase modulation of an RF signal. Because the RF signal path is linear, the original modulation is preserved. This part can be used as a general-purpose RF modulator, a variable attenuator/phase shifter, or a remodulator. The amplitude can be controlled from a maximum of −2 dB to less than −32 dB, and the phase can be shifted continuously over the entire 360° range. For maximum gain, the AD8340 delivers an OP1dB of 11 dBm, an OIP3 of 24 dBm, and an output noise floor of −149 dBm/Hz, independent of phase. It operates over a fre-quency range of 700 MHz to 1.0 GHz.

The baseband inputs in Cartesian I and Q format control the amplitude and phase modulation imposed on the RF input signal. Both I and Q inputs are dc-coupled with a ±500 mV differential full-scale range. The maximum modulation band-width is 230 MHz, which can be reduced by adding external capacitors to limit the noise bandwidth on the control lines.

Both the RF inputs and outputs can be used differentially or single-ended and must be ac-coupled. The RF input and output impedances are nominally 50 Ω over the operating frequency range. The DSOP pin allows the output stage to be disabled quickly to protect subsequent stages from overdrive. The AD8340 operates off supply voltages from 4.75 V to 5.25 V while consuming approximately 130 mA.

The AD8340 is fabricated using the Analog Devices, Inc. proprietary, high performance 25 GHz SOI complementary bipolar IC process. It is available in a 24-lead RoHS-compliant LFCSP package and operates over a −40°C to +85°C tempera-ture range. Evaluation boards are available.