AD8302RF/IF射頻/中頻RFID的射頻檢測(cè)器規(guī)格書PDF中文資料

AD8302屬于RF/IF射頻/中頻RFID的射頻檢測(cè)器。由亞德諾半導(dǎo)體技術(shù)有限公司制造生產(chǎn)的AD8302射頻檢測(cè)器射頻檢測(cè)器產(chǎn)品是用于測(cè)量射頻信號(hào)的集成電路，包括適用于不同用途的許多型號(hào)，例如顯示待測(cè)信號(hào)的峰值幅度，而非其平均值或 RMS 幅度。就這些產(chǎn)品探討的常見主題包括能夠測(cè)量高頻信號(hào)輸入、具有對(duì)數(shù)特征的傳遞函數(shù)。

PRODUCT DESCRIPTION

The AD8302 is a fully integrated system for measuring gain/loss and phase in numerous receive, transmit, and instrumentation applications. It requires few external components and a single supply of 2.7 V–5.5 V. The ac-coupled input signals can range from –60 dBm to 0 dBm in a 50 ? system, from low frequencies up to 2.7 GHz. The outputs provide an accurate measurement of either gain or loss over a ±30 dB range scaled to 30 mV/dB, and of phase over a 0°–180° range scaled to 10 mV/degree. Both subsystems have an output bandwidth of 30 MHz, which may optionally be reduced by the addition of external filter capacitors. The AD8302 can be used in controller mode to force the gain and phase of a signal chain toward predetermined setpoints.

The AD8302 comprises a closely matched pair of demodulating logarithmic amplifiers, each having a 60 dB measurement range. By taking the difference of their outputs, a measurement of the magnitude ratio or gain between the two input signals is available. These signals may even be at different frequencies, allowing the measurement of conversion gain or loss. The AD8302 may be used to determine absolute signal level by applying the unknown signal to one input and a calibrated ac reference signal to the other. With the output stage feedback connection disabled, a comparator may be realized, using the setpoint pins MSET and PSET to program the thresholds.

FEATURES

Measures Gain/Loss and Phase up to 2.7 GHz

Dual Demodulating Log Amps and Phase Detector

Input Range –60 dBm to 0 dBm in a 50 Ω System

Accurate Gain Measurement Scaling (30 mV/dB)

Typical Nonlinearity < 0.5 dB

Accurate Phase Measurement Scaling (10 mV/Degree)

Typical Nonlinearity < 1 Degree

Measurement/Controller/Level Comparator Modes

Operates from Supply Voltages of 2.7 V–5.5 V

Stable 1.8 V Reference Voltage Output

Small Signal Envelope Bandwidth from DC to 30 MHz

APPLICATIONS

RF/IF PA Linearization

Precise RF Power Control

Remote System Monitoring and Diagnostics

Return Loss/VSWR Measurements

Log Ratio Function for AC Signals