AD606

a 50 MHz, 80 dB Demodulating Logarithmic Amplifier with Limiter Output AD606 FEATURES Logarithmic Amplifier Performance –75 dBm to +5 dBm Dynamic Range ≤1.5 nV/√Hz Input Noise Usable to >50 MHz 37.5 mV/dB Voltage Output On-Chip Low-Pass Output Filter Limiter Performance ؎1 dB Output Flatness over 80 dB Range ؎3؇ Phase Stability at 10.7 MHz over 80 dB Range Adjustable Output Amplitude Low Power +5 V Single Supply Operation 65 mW Typical Power Consumption CMOS-Compatible Power-Down to 325 ␮W typ <5 ␮s Enable/Disable Time APPLICATIONS Ultrasound and Sonar Processing Phase-Stable Limiting Amplifier to 100 MHz Received Signal Strength Indicator (RSSI) Wide Range Signal and Power Measurement PRODUCT DESCRIPTION The AD606 is a complete, monolithic logarithmic amplifier using a 9-stage “successive-detection” technique. It provides both logarithmic and limited outputs. The logarithmic output is from a three-pole post-demodulation low-pass filter and provides a loadable outpu...