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Glossary Terms and Definitions Beginning with the Letter E

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E	See Volt
E1	Wide-area, digital transmission scheme, used predominantly in Europe, that carries data at a rate of 2.048Mbps. E1 lines can be leased for private use from common carriers.
E2	A line that carries four multiplexed E1 signals with a data rate of 8.448Mbps.
E3	Wide-area, digital transmission scheme used predominantly in Europe that carries data at a rate of 34.368Mbps. E3 lines can be leased for private use from common carriers.
EAM	Electro-Absorption Modulators: Chip-level modulation devices often integrated into hybrid transponder devices, alongside lasers.
ECB	Electrically controlled birefringence
ECL	Emitter-coupled logic
ECM	Electret capacitor microphone
EconoReset	The simplest form of microprocessor supervisory circuit, it monitors the power supply for the microprocessor and provides only a power-on reset function.
EconOscillator	Low-cost, surface-mount, CMOS oscillator family from Dallas Semiconductor. EconOscillators replace crystal-based oscillators. They need no external crystals or timing components. See: EconOscillator product index for additional descriptions, features, etc. EconOscillator is a trademark of Dallas Semiconductor.
EDFA	Erbium-doped fiber-optical amplifier
EDGE	Enhanced Data Rates for GSM Evolution: An enhanced modulation technique designed to increase network capacity and data rates in GSM networks. EDGE should provide data rates up to 384Kbps.
EEPROM	Electrically erasable programmable read-only memory
Effective Number Of Bits	See ENOB
Effective Series Inductance	See ESL
Effective Series Resistance	See ESR
EFT	Electrical fast transient
EIA	Electronic Industries Alliance: Among other things, the EIA sponsors electrical and electronic standards.
EIA-422	See RS-422/RS-485
EIA-485	See RS-422/RS-485
EIA-JEDEC	Electronic Industries Association/Joint Electron Device Engineering Council
EIA232	See RS-232
Electro-Absorption Modulator	See EAM
Electromagnetic Interference	See EMI
Electromotive Force	See Volt
Electronic Digital Rheostat	See Dallastat
Electronic Industries Alliance	See EIA
Electrostatic Discharge	See ESD
Embedded System	A system in which the computer (generally a microcontroller or microprocessor) is included as an integral part of the system. Often, the computer is relatively invisible to the user, without obvious applications, files, or operating systems. Examples of products with invisible embedded systems are the controller that runs a microwave oven or the engine control system of a modern automobile.
EMC	Electromagnetic Compatibility: The ability of electronic equipment to be a "good electromagnetic neighbor": It neither causes, nor is susceptible to, electromagnetic interference (within the limits of applicable standards).
EMF	See Volt
EMI	Electromagnetic Interference: Unwanted noise from electromagnetic radiation. See: EMI Reduction Solutions page.
End Point	Behavior of the device at the limit of temperature or voltage.
ENDEC	Encoder/Decoder
Enhanced Data Rates For GSM Evolution	See EDGE
ENOB	Effective Number of Bits: An indication of the quality of an analog-to-digital converter (ADC). The measurement is related to the test frequency and the signal-to-noise ratio.
EP	See Exposed Pad
EPON	Ethernet (-based) passive optical network
EPROM	Erasable programmable read-only memory
Equivalent Series Inductance	See ESL
Equivalent Series Resistance	See ESR
ERC	Extinction ratio control
Error Vector Magnitude	See EVM
ESBGA	Enhanced Super Ball-Grid Array (trademark of Amkor/Anam)
ESD	Electrostatic Discharge: Release of stored static electricity. Most commonly: The potentially damaging discharge of many thousands of volts that occurs when an electronic device is touched by a charged body. See the following application notes that describe how ESD is generated, how it damages electronic systems, human body and machine models for testing, IEC compliance levels, and design approaches. App note: Maxim Leads the Way in ESD Protection App note: ESD Protection for I/O Ports App note: Switch Bounce and Other Dirty Little Secrets
ESD Protected	See ESD Protection
ESD Protection	Devices added to input and output pins on an IC to protect the internal circuitry from the damaging effect of electrostatic discharge. See: ESD Overview.
ESF	Extended Superframe: A DS1 framing format in which 24 DS0 times lots, plus a coded framing bit are organized into a frame which is repeated 24 times to form a superframe.
ESL	Effective/Equivalent Series Inductance is the parasitic inductance in a capacitor or resistor.
ESP	Extended stack pointer
ESR	Effective Series Resistance (or Equivalent Series Resistance or ESR) is the resistive component of a capacitor's equivalent circuit. A capacitor can be modeled as an ideal capacitor in series with a resistor and an inductor. The resistor's value is the ESR.
Euroconnector	See SCART
EV Kit	See Evaluation Kit
Eval Kit	See Evaluation Kit
Evaluation Kit	Evaluation Kit (EV Kit, Development Kit): A printed circuit board with an integrated circuit and support components to produce a working circuit for evaluation and development. Most Evaluation Kits are fully assembled and tested. EVKIT: Part number suffix used for Maxim Evaluation Kits. Dallas Semiconductor, now owned by Maxim, used the term "development kit." See the list of Maxim Evaluation Kits and EVKit software.
Evaluation System	See EVSYS
EVKIT	See Evaluation Kit
EVM	Error Vector Magnitude: A measure of the difference between the (ideal) waveform and the measured waveform. The difference is called the error vector, usually referred to with regard to M-ary I/Q modulation schemes like QPSK, and shown on an I/Q "constellation" plot of the demodulated symbols. Also see: "Phase Noise and TD-SCDMA UE Receiver," www.maxim-ic.com/an1824
EVSYS	Evaluation System: Evaluation kits that also include an interface board for connecting to a personal computer and Windows-based EVKit software. EVSYS: Suffix used for Maxim Evaluation System part numbers.
Exposed Pad	Offered in some packages to improve thermal dissipation or lower the impedance of the ground connection. Normally not electrically isolated, it typically needs to be connected to a ground or power plane, depending on the device.
Exposed Paddle	See Exposed Pad
Extended Superframe	See ESF