描述 Description

The LT?5504 is an 800MHz to 2700MHz monolithic integrated measuring receiver, capable of detecting a wide dynamic range RF signal from –75dBm to +5dBm. The logarithm of the RF signal is precisely converted into a linear DC voltage. The LT5504 consists of RF/IF limiters, an LO buffer amplifier, a limiting mixer, a 3rd-order 450MHz integrated low pass filter, RF/IF detectors and an output interface. The ultrawide dynamic range is achieved by simultaneously measuring the RF signal and a down-converted IF signal obtained using the on-chip mixer and an external local oscillator. The RF- and IF-detected signals are summed to generate an accurate linear DC voltage proportional to the input RF voltage (or power) in dB. The output is buffered with a low output impedance driver.

特性 Features

·RF Frequency Range: 800MHz to 2.7GHz
·Ultra Wide Dynamic Range: 80dB Over Full Frequency Range and Over Temperature
·Wide Power Supply Range: 2.7V to 5.25V
·Low Supply Current: 14.7mA at 3V
·Shutdown Current: 0.2μA
·8-Lead MS0P Package

應(yīng)用 Application

·RSSI Measurements
·Receive AGC
·Transmit Power Control
·ASK and Envelope Demodulation
·GSM/TDMA/CDMA/WCDMA

簡介

LT5504屬于RF/IF射頻/中頻RFID的RFIC模塊。由制造生產(chǎn)的LT5504RF 其它 IC 和模塊RF 其它 IC 和模塊產(chǎn)品系列包含各種獨特、專門或特定用途的產(chǎn)品，可與 RF、IF 和微波無線電應(yīng)用結(jié)合使用。示例包括 AM/FM 調(diào)諧器和接收器、偏置網(wǎng)絡(luò)、基帶處理器、計數(shù)器、數(shù)字可調(diào)電容器、下變頻器、倍頻器、移相器、前置分頻器、端接器、上變頻器、VCO 等。