90 dB Logarithmic Amplifier
LOGAMP3 is a stand-alone logarithmic amplifier (log amp). It provides high-speed logarithmic signal compression from micro volts to volts with exceptional linearity. Both positive and negative information may be processed over a wide range of duty cycles. The diagram below shows the response chart of the log amp. The weaker signals get higher magnification than the stronger signals. The output signal from the log amp can be further processed by the hardware on a receiver board.
LOGAMP3 is widely used for ultrasonic testing on high attenuation materials which require high dynamic range of signals on one scope screen without using high resolution ADC instrument. Applications in the ultrasonic testing include composite material evaluation, corrosion mapping with rough surfaces, small flaw detections, and some tests with wide range of signal amplitude. Other applications include LIDAR, lasers, and electro-optiics.