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Current-to-voltage Converter
In electronics, a transimpedance amplifier (TIA) is a current to voltage converter, almost exclusively implemented with one or more operational amplifiers. The TIA can be used to amplify the current output of Geiger–Müller tubes, photo multiplier tubes, accelerometers, photo detectors and other types of sensors to a usable voltage. Current to voltage converters are used with sensors that have a current response that is more linear than the voltage response. This is the case with photodiodes where it is not uncommon for the current response to have better than 1% nonlinearity over a wide range of light input. The transimpedance amplifier presents a low impedance to the photodiode and isolates it from the output voltage of the operational amplifier. In its simplest form a transimpedance amplifier has just a large valued feedback resistor, Rf. The gain of the amplifier is set by this resistor and because the amplifier is in an inverting configuration, has a value of -Rf. T ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
TIA Simple
TIA most commonly refers to the transient ischemic attack, a "mini-stroke". TIA or Tia may also refer to: People * Tia (name), including a list of people and fictional characters with the given name or surname * TiA, stage name of a female Japanese singer (born 1987) * Tia (singer), stage name of a 21st century female Japanese singer * Tia (Māori explorer) (), early Māori explorer and chief * Tia (princess) an ancient Egyptian princess of the 19th Dynasty * Tia (overseer of treasury), ancient Egyptian official, husband of Princess Tia Science and technology * Tia (moth), ''Tia'' (moth), a genus of moths in the family Tortricidae * Transimpedance amplifier, a type of current-to-voltage converter * Television Interface Adaptor, a custom chip for the Atari 2600 game console * The Internet Adapter, 1993 software created by Cyberspace Development * Totally Integrated Automation, a 1996 Siemens organisational concept Aviation * Tampa International Airport, US, IATA code TPA * ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pole (complex Analysis)
In complex analysis (a branch of mathematics), a pole is a certain type of singularity (mathematics), singularity of a complex-valued function of a complex number, complex variable. It is the simplest type of non-removable singularity of such a function (see essential singularity). Technically, a point is a pole of a function if it is a zero of a function, zero of the function and is holomorphic function, holomorphic (i.e. complex differentiable) in some neighbourhood (mathematics), neighbourhood of . A function is meromorphic function, meromorphic in an open set if for every point of there is a neighborhood of in which at least one of and is holomorphic. If is meromorphic in , then a zero of is a pole of , and a pole of is a zero of . This induces a duality between ''zeros'' and ''poles'', that is fundamental for the study of meromorphic functions. For example, if a function is meromorphic on the whole complex plane plus the point at infinity, then the sum of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
PIN Diode
A PIN diode is a diode with a wide, undoped intrinsic semiconductor region between a p-type semiconductor and an n-type semiconductor region. The p-type and n-type regions are typically heavily doping (semiconductor), doped because they are used for ohmic contacts. The wide Intrinsic semiconductor, intrinsic region is in contrast to an ordinary p–n diode. The wide intrinsic region makes the PIN diode an inferior rectifier (one typical function of a diode), but it makes it suitable for attenuators, fast switches, photodetectors, and high-voltage power electronics applications. The PIN photodiode was invented by Jun-Ichi Nishizawa and his colleagues in 1950. It is a semiconductor device. Operation A PIN diode operates under what is known as high-level injection. In other words, the intrinsic "i" region is flooded with charge carriers from the "p" and "n" regions. Its function can be likened to filling up a water bucket with a hole on the side. Once the water reaches the hole ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Optical Communication
Optical communication, also known as optical telecommunication, is communication at a distance using light to carry information. It can be performed visually or by using electronic devices. The earliest basic forms of optical communication date back several millennia, while the earliest electrical device created to do so was the photophone, invented in 1880. An optical communication system uses a transmitter, which encodes a message into an optical signal, a channel, which carries the signal to its destination, and a receiver, which reproduces the message from the received optical signal. When electronic equipment is not employed the 'receiver' is a person visually observing and interpreting a signal, which may be either simple (such as the presence of a beacon fire) or complex (such as lights using color codes or flashed in a Morse code sequence). Modern communication relies on optical networking systems using optical fiber, optical amplifiers, lasers, switches, rout ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Operational Transconductance Amplifier
The operational transconductance amplifier (OTA) is an amplifier that outputs a Electric current, current proportional to its input voltage. Thus, it is a voltage controlled current source. Three types of OTAs are single-input single-output, differential-input single-output, and differential-input differential-output (a.k.a. fully differential), however this article focuses on differential-input single-output. There may be an additional input for a current to control the amplifier's transconductance. The first commercially available integrated circuit units were produced by RCA in 1969 (before being acquired by General Electric) in the form of the CA3080. Although most units are constructed with bipolar transistors, field effect transistor units are also produced. Like a standard operational amplifier, the OTA also has a high Electrical impedance, impedance differential input stage and may be used with negative feedback. But the OTA differs in that: * The OTA outputs a ''curre ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Field Effect Transistor
The field-effect transistor (FET) is a type of transistor that uses an electric field to control the current through a semiconductor. It comes in two types: junction FET (JFET) and metal-oxide-semiconductor FET (MOSFET). FETs have three terminals: ''source'', ''gate'', and ''drain''. FETs control the current by the application of a voltage to the gate, which in turn alters the conductivity between the drain and source. FETs are also known as unipolar transistors since they involve single-carrier-type operation. That is, FETs use either electrons (n-channel) or holes (p-channel) as charge carriers in their operation, but not both. Many different types of field effect transistors exist. Field effect transistors generally display very high input impedance at low frequencies. The most widely used field-effect transistor is the MOSFET (metal–oxide–semiconductor field-effect transistor). History The concept of a field-effect transistor (FET) was first patented by the Aust ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Root Mean Square
In mathematics, the root mean square (abbrev. RMS, or rms) of a set of values is the square root of the set's mean square. Given a set x_i, its RMS is denoted as either x_\mathrm or \mathrm_x. The RMS is also known as the quadratic mean (denoted M_2), a special case of the generalized mean. The RMS of a continuous function is denoted f_\mathrm and can be defined in terms of an integral of the square of the function. In estimation theory, the root-mean-square deviation of an estimator measures how far the estimator strays from the data. Definition The RMS value of a set of values (or a continuous-time waveform) is the square root of the arithmetic mean of the squares of the values, or the square of the function that defines the continuous waveform. In the case of a set of ''n'' values \, the RMS is : x_\text = \sqrt. The corresponding formula for a continuous function (or waveform) ''f''(''t'') defined over the interval T_1 \le t \le T_2 is : f_\text = \sqrt , and the R ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
TIA OpAmp Noise
TIA most commonly refers to the transient ischemic attack, a "mini-stroke". TIA or Tia may also refer to: People * Tia (name), including a list of people and fictional characters with the given name or surname * TiA, stage name of a female Japanese singer (born 1987) * Tia (singer), stage name of a 21st century female Japanese singer * Tia (Māori explorer) (), early Māori explorer and chief * Tia (princess) an ancient Egyptian princess of the 19th Dynasty * Tia (overseer of treasury), ancient Egyptian official, husband of Princess Tia Science and technology * ''Tia'' (moth), a genus of moths in the family Tortricidae * Transimpedance amplifier, a type of current-to-voltage converter * Television Interface Adaptor, a custom chip for the Atari 2600 game console * The Internet Adapter, 1993 software created by Cyberspace Development * Totally Integrated Automation, a 1996 Siemens organisational concept Aviation * Tampa International Airport, US, IATA code TPA * Texa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Johnson–Nyquist Noise
Johnson–Nyquist noise (thermal noise, Johnson noise, or Nyquist noise) is the voltage or current noise generated by the thermal agitation of the charge carriers (usually the electrons) inside an electrical conductor at equilibrium, which happens regardless of any applied voltage. Thermal noise is present in all electrical circuits, and in sensitive electronic equipment (such as radio receivers) can drown out weak signals, and can be the limiting factor on sensitivity of electrical measuring instruments. Thermal noise is proportional to absolute temperature, so some sensitive electronic equipment such as radio telescope receivers are cooled to cryogenic temperatures to improve their signal-to-noise ratio. The generic, statistical physical derivation of this noise is called the fluctuation-dissipation theorem, where generalized impedance or generalized susceptibility is used to characterize the medium. Thermal noise in an ideal resistor is approximately white, meaning that it ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Parasitic Capacitance
Parasitic capacitance or stray capacitance is the unavoidable and usually unwanted capacitance that exists between the parts of an electronic component or circuit simply because of their proximity to each other. When two electrical conductors at different voltages are close together, the electric field between them causes electric charge to be stored on them; this effect is capacitance. All practical circuit elements such as inductors, diodes, and transistors have internal capacitance, which can cause their behavior to depart from that of ideal circuit elements. Additionally, there is always some capacitance between any two conductors; this can be significant with closely spaced conductors, such as adjacent wires or printed circuit board traces. The parasitic capacitance between the turns of an inductor (e.g. Figure 1) or other wound component is often described as ''self-capacitance''. However, in electromagnetics, the term self-capacitance more correctly refers to a diffe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
TIA Bode Plot 1S
TIA most commonly refers to the transient ischemic attack, a "mini-stroke". TIA or Tia may also refer to: People * Tia (name), including a list of people and fictional characters with the given name or surname * TiA, stage name of a female Japanese singer (born 1987) * Tia (singer), stage name of a 21st century female Japanese singer * Tia (Māori explorer) (), early Māori explorer and chief * Tia (princess) an ancient Egyptian princess of the 19th Dynasty * Tia (overseer of treasury), ancient Egyptian official, husband of Princess Tia Science and technology * ''Tia'' (moth), a genus of moths in the family Tortricidae * Transimpedance amplifier, a type of current-to-voltage converter * Television Interface Adaptor, a custom chip for the Atari 2600 game console * The Internet Adapter, 1993 software created by Cyberspace Development * Totally Integrated Automation, a 1996 Siemens organisational concept Aviation * Tampa International Airport, US, IATA code TPA * Texa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
