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Encyclopedia > Sensitivity (electronics)

The sensitivity of an electronic device, e.g., a communications system receiver, or detection device, e.g., PIN diode, is the minimum magnitude of input signal required to produce a specified output signal having a specified signal-to-noise ratio, or other specified criteria. In telecommunication, a communications system is a collection of individual communications networks, transmission systems, relay stations, tributary stations, and data terminal equipment (DTE) usually capable of interconnection and interoperation to form an integrated whole. ... In general, detection is the extraction of intelligence from a carrier signal in a communication system. ... Layers of a PIN diode PIN diode is a diode with a wide, undoped intrinsic semiconductor region between p-type semiconductor and n-type semiconductor regions. ... Input is the term denoting either an entrance or changes which are inserted into a system and which activate/modify a process. ... In telecommunication, signalling (or signaling) has the following meanings: The use of signals for controlling communications. ... // Information processing In information processing, output is the process of transmitting information by an object (verb usage). ... Signal-to-noise ratio (often abbreviated SNR or S/N) is an electrical engineering concept defined as the ratio of a signal power to the noise power corrupting the signal. ...


Note 1: The sensitivity of a microphone is usually expressed as the sound field strength in decibels (dB) re 1 V/Pa (Pa = N/m2) or as the transfer factor in millivolts per pascal (mV/Pa) into an open circuit or into a 1 kiloohm load. A microphone, sometimes referred to as a mike or mic (both IPA pronunciation: ), is an acoustic to electric transducer or sensor that converts sound into an electrical signal. ... Sound is a disturbance of mechanical energy that propagates through matter as a wave. ... ʐIn physics, the field strength of a field is the magnitude of its vector (spatial) value. ... The decibel (dB) is a logarithmic unit of measurement that expresses the magnitude of a physical quantity (usually power) relative to a specified or implied reference level. ... The pascal (symbol: Pa) is the SI derived unit of pressure or stress (also: Youngs modulus and tensile strength). ... Open circuit can mean:- In electronics, where there is nothing connected to a load and no current can flow. ... The input impedance or load impedance of a circuit or electronic device is the impedance actually experienced by a signal which is connected to it. ...


Note 2: The sensitivity of a loudspeaker is usually expressed as dB / 2,83 Volt / 1 Meter. This is not the same as the Electrical efficiency. This article or section needs copy editing for grammar, style, cohesion, tone and/or spelling. ... The efficiency of an entity (a device, component, or system) in electronics and electrical engineering is defined as useful power output divided by the total electrical power consumed (a fractional expression). ...


Note 3: The sensitivity of a hydrophone is usually expressed as dB re 1 V/µPa. A hydrophone is a sound-to-electricity transducer for use in water or other liquids, analogous to a microphone for air. ...


Note 4: "Sensitivity" is sometimes improperly used as a synonym for "responsivity." Responsivity: In a photodetector, the ratio of the electrical output to the optical input. ...

This article contains material from the Federal Standard 1037C (in support of MIL-STD-188), which, as a work of the United States Government, is in the public domain. Federal Standard 1037C, entitled Telecommunications: Glossary of Telecommunication Terms is a United States Federal Standard, issued by the General Services Administration pursuant to the Federal Property and Administrative Services Act of 1949, as amended. ... MIL-STD-188 is a series of U.S. military standards relating to telecommunications. ... A work of the United States government, as defined by United States copyright law, is a work prepared by an officer or employee of the U.S. government as part of that persons official duties. ... The public domain comprises the body of all creative works and other knowledge—writing, artwork, music, science, inventions, and others—in which no person or organization has any proprietary interest. ...

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Sensitivity (electronics) - Wikipedia, the free encyclopedia (137 words)
The sensitivity of an electronic device, e.g., a communications system receiver, or detection device, e.g., PIN diode, is the minimum magnitude of input signal required to produce a specified output signal having a specified signal-to-noise ratio, or other specified criteria.
Note 1: The sensitivity of a microphone is usually expressed as field strength in decibels (dB) re 1 V/Pa (Pa = N/m²) or as millivolts per pascal (mV/Pa) into an open circuit or into a 1 kiloohm load.
Note 2: "Sensitivity" is sometimes improperly used as a synonym for "responsivity."
  More results at FactBites »

 
 

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