|GaAs||Gallium arsenide: A semiconductor material used for optoelectronic products such as LEDs, and for high-speed electronic devices.|
|GaAs MESFET||A Gallium Arsenide (GaAs) Metal-Semiconductor Field-Effect-Transistor (MESFET) is a transistor built with gallium arsenide semiconductor material. The conducting channel is built using a metal-semiconductor (Schottky) junction.|
|GaAsFET||Gallium arsenide field-effect transistor|
|GaAsP||Gallium Arsenide Phosphide (or, Gallium Arsenic Phosphide): A semiconductor material used for optoelectronics, including LEDs and photodiodes.|
|Gain||The amount of amplification accomplished by an amplifier circuit. For instance, a gain of 2 would mean the output is scaled to twice the amplitude of the input.|
|Gain Error||The gain error of a data converter indicates how well the slope of an actual transfer function matches the slope of the ideal transfer function.
Gain error is usually expressed in LSB or as a percent of full-scale range. Gain error can be calibrated out with hardware or in software. Gain error is the full-scale error minus the offset error.
|Gallium Arsenide||See GaAs|
|Gallium Arsenide Metal-Semiconductor-Field-Effect-Transistor||See GaAs MESFET|
|Gallium Arsenide Phosphide||See GaAsP|
|Galvanic Isolation||Galvanic isolation is a design technique that separates electrical circuits to eliminate stray currents. Signals can pass between galvanically isolated circuits, but stray currents, such as differences in ground potential or currents induced by AC power, are blocked.|
|gamma||See Gamma Correction|
|gamma compensation||See Gamma Correction|
|Gamma Correction||The application of a function that transforms brightness or luminance values. Gamma functions are usually nonlinear but monotonic and designed to affect the highlights (whitest values), midtones (grayscale), and shadows (dark areas) separately.
Most commonly applied to make a light-emitting device, such as a display, match the human eye's brightness curve. In other terms: A gamma correction function can be used to alter the luminance (light intensity) of a display such that its brightness (the human-perceived values) looks correct.
|Gas Gauge||See Battery Fuel Gauge|
|Gate||1. The controlling terminal of a FET. A voltage on the gate controls the current flow between the source and drain.
2. A basic logic element (e.g. AND, OR, NOT, NAND, NOR, XOR, etc.).
|Gaussian frequency-shift keying||See GFSK|
|Gaussian minimum shift keying||See GMSK|
|GBIC||Gigabit Interface Converter: A removable transceiver module permitting Fibre-Channel and Gigabit-Ethernet physical-layer transport.|
|General Packet Radio Service||See GPRS|
|General Purpose I-O||See GPIO|
|General Purpose I/O||See GPIO|
|General Purpose Interface Bus||See GPIB|
|Generator||An electromechanical device that converts mechanical power into electrical power.|
|GFSK||Gaussian frequency-shift keying: A type of FSK modulation which uses a Gaussian filter to shape the pulses before they are modulated. This reduces the spectral bandwidth and out-of-band spectrum, to meet adjacent-channel power rejection requirements.
Bluetooth uses GFSK.
|Gigabit||1 billion bits-per-second.|
|Gigabit Interface Converter||See GBIC|
|Glitch||General term used to describe an undesirable, momentary pulse or unexpected input or output.|
|Glitch Immunity||A term used in microprocessor supervisory circuit datasheets to describe the maximum magnitude and duration of a negative-going VCC supply-voltage pulse without causing the reset output to assert.|
|Global Navigation Satellite System||See GLONASS|
|Global Positioning System||See GPS|
|Global System For Mobile Communications||See GSM|
|GLONASS||The Russian Global Navigation Satellite System|
|GMSK||Gaussian minimum shift keying (GMSK) is a form of frequency shift keying (FSK) used in GSM systems. The tone frequencies are separated by exactly half the bit rate. It has high spectral efficiency.|
|GMSL||Gigabit Multimedia Serial Link. This is a Maxim-specific category name for a range of products that serialize, deserialize, and buffer high-speed digital data streams for communications over short distances.|
|GPIB||General Purpose Interface Bus: A standard bus for controlling electronic instruments with a computer. Also called IEEE-488 bus because it is defined by ANSI/IEEE Standards 488-1978, and 488.2-1987. Also called HP-IB, a trademarked term of Hewlett-Packard, which invented the protocol.|
|GPIO||General Purpose I/O: A flexible parallel interface that allows a variety of custom connections.|
|GPON||Gigabit passive optical network|
|GPRS||General Packet Radio Service: A radio technology for GSM networks that adds packet-switching protocols and shorter set-up time for ISP connections; it offers the possibility to charge by amount of data sent rather than connect time.|
|GPS||Global Positioning System: A satellite- based navigation system in which two or more signals, received from satellites, are used to determine the receiver's position on the globe.|
|GSM||Global System for Mobile Communications: A land, mobile, pan-European, digital, cellular radio-communications system.|
|GSM900||GSM network operating in the 900MHz band, as used by BT Cellnet and Vodafone in the UK, and by more than one hundred countries around the world.|
|GUI||Graphical user interface|