low-noise preamplifier

low-noise preamplifier

[′lō ‚nȯiz prē′am·plə‚fī·ər]
(electronics)
A low-noise amplifier placed in a system prior to the main amplifier, sometimes close to the source; used to establish a satisfactory noise figure at an early point in the system.
References in periodicals archive ?
Low-noise preamplifier signal designed to measure signals from the photomultiplier.
Models may be purchased as stand-alone units or in a microphone and low-noise preamplifier combination with iTEDS on-board memory storage capabilities, facilitating their use within larger channel count applications.
The dynamic range is dependent on environmental conditions and spectrum analyzer type; the integrated low-noise preamplifier provides an additional 28-dBm gain.
It offers the performance of the AK5354 while integrating a low-noise preamplifier (+40 dB to 60 dB) and a condenser microphone power supply.

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