AD8309 Datasheet 5 MHz.500 MHz 100 dB Demodulating Logarithmic Amplifier with Limiter Output

Manufacturer: Analog Devices

AD8309 5 mhz.500 mhz 100 db demodulating logarithmic amplifier with limiter output by Analog Devices - Datasheet Preview

Datasheet Details

Part number	AD8309
Manufacturer	Analog Devices
File Size	311.97 KB
Description	5 MHz.500 MHz 100 dB Demodulating Logarithmic Amplifier with Limiter Output
Download	AD8309 Download (PDF)

General Description

The AD8309 is a complete IF limiting amplifier, providing both an accurate logarithmic (decibel) measure of the input signal (the RSSI function) over a dynamic range of 100 dB, and a programmable limiter output, useful from 5 MHz to 500 MHz.

It is easy to use, requiring few external components.

A single supply voltage of +2.7 V to +6.5 V at 16 mA is needed, corresponding to a power consumption of under 50 mW at 3 V, plus the limiter bias current, determined by the application and typically 2 mA, providing a limiter gain of 100 dB when using 200 Ω loads.

Overview

a 5 MHz–500 MHz 100 dB Demodulating Logarithmic Amplifier with Limiter Output AD8309 FUNCTIONAL BLOCK DIAGRAM SIX STAGES TOTAL GAIN 72dB INHI 12dB INLO LADR ATTEN 4 ؋ DET BIAS CTRL I-V TEN DETECTORS SPACED 12dB 12dB.

Key Features

Complete Multistage Log-Limiting IF Amplifier 100 dB Dynamic Range:.
78 dBm to +22 dBm (Re 50 ⍀ ) Stable RSSI Scaling Over Temperature and Supplies: 20 mV/dB Slope,.
95 dBm Intercept ؎0.4 dB RSSI Linearity up to 200 MHz Programmable Limiter Gain and Output Current Differential Outputs to 10 mA, 2.4 V p-p Overall Gain 100 dB, Bandwidth 500 MHz Constant Phase (Typical ؎80 ps Delay Skew) Single Supply of +2.7 V to +6.5 V at 16 mA Typical Fully Differential Inputs, RIN = 1 k ⍀, CIN =.

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