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An electrical circuit known as a log amplifier, sometimes known as a logarithmic amplifier, generates an output that is proportional to the input’s applied logarithm. To operate as a logarithmic amplifier, or simply a log amplifier, an operational amplifier can be set up in certain ways. A non-linear circuit arrangement known as a logarithmic amplifier produces an output that is K times the input voltage’s logarithmic magnitude.
In calculations, such as signal multiplication and division, computation of powers and roots, signal compression and decompression, as well as process control in industrial applications, logarithmic amplifiers are used. Since the collector current of a BJT is logarithmically proportional to its base-emitter voltage, a log amplifier can be created utilising a bipolar junction transistor in the feedback to the op-amp.
The Global Logarithmic amplifier market accounted for $XX Billion in 2021 and is anticipated to reach $XX Billion by 2030, registering a CAGR of XX% from 2022 to 2030.
A new 2-6 GHz Surface Mount Logarithmic Amplifier, model MLS-0206, from Narda-MITEQ was just released. The original Plessey SL3522 log amp has been replaced by the pin-for-pin, drop-in compatible PS13201 Logarithmic/Limiting Amplifier from Plessey Semiconductors. A monolithic seven stage successive detection logarithmic amplifier IC for use in the 100MHz to 500MHz frequency band is the PS13201 Log Amp.
With capability for external adjustment of log slope and offset, it has an on-chip video amplifier. A balanced RF output is another feature. 5V supplies are required to power the PS13201. The PS13201 is designed to operate between -55°C and +125°C according to military specifications.
