The group of radio frequencies extending from 390MHz to 1550MHz. The GPS carrier frequencies (1227.6MHz and 1575.42MHz) are in the L-band.
Local Area Network: A computer network, usually within one building, that connects computers, file and mail servers, storage, peripherals, and other devices in a way that permits data interchange and sharing of resources. Ethernet and WiFi (802.11) are co
A laser diode, (LD), injection laser diode (ILD), or diode laser is a semiconductordevice similar to a light-emitting diode in which the laser beam is created at the diode's junction.
An IC that supplies modulated current to a laser diode in response to an input serial-data stream.
1. Leadless Ceramic Chip Carrier or Leadless Chip Carrier: An IC package, usually ceramic, that has no leads (pins). It instead uses metal pads at its outer edge to make contact with the printed circuit board.
Liquid-crystal display
Low Drop Out: A linear voltage regulator that will operate even when the input voltage barely exceeds the desired output voltage.
Leakage inductance in a transformer is an inductive component that results from the imperfect magnetic linking of one winding to another.
Light-Emitting Diode: A semiconductor device that emits light (usually visible or infrared) when forward-biased.
A device which translates a logic signal from one type to another, for example, ECL to TTL.
Linear Feedback Shift Register:
Low gain, high linearity
LiDAR is a detection system that works on the principle of radar, but uses light from a laser. It is a surveying method that measures distance to a target by illuminating the target with pulsed laser light and measuring the reflected pulses with a sensor. Differences in laser return times and wavelengths can then be used to make digital 3-D representations of the target.
A light-emitting diode (LED) is a two-lead semiconductorlight source. It is a pn junction diode that emits light when activated.
Local Interconnect Network (LIN): Defined by the LIN-BUS consortium, a LIN is a low data-rate, single-wire communications system, used in automotive and heavy vehicle applications.
The ability of a power-supply voltage regulator to maintain its output voltage despite variations in its input voltage.
1. Having the property that the output is proportional to the input. E.g.: VOUT = k*VIN where k is a constant.
Uses a linear-pass element (BJT or FET) to control/regulate the charging voltage/current.
A voltage regulator that is placed between a supply and the load and provides a constant voltage by varying its effective resistance.
Lithium batteries for low-power, high-reliability, long-life applications such as non-volatile memory and timekeeping (typically in coin-shaped cells) use a variety of lithium-based chemistries (as differentiated from lithium-ion).
Lithium and lithium-ion: A number of battery chemistries are based on the element lithium, a highly-reactive metallic element. Lithium-based batteries are common in two applications: Power for portable equipment such as cell phones, laptops, and MP3 playe
Local loopback
Lumen(s)
Lumen(s) per watt
Local Multipoint Distribution Service: A broadband radio service, located in the 28GHz and 31GHz bands, designed to provide two-way transmission of voice, high-speed data and video (wireless cable TV). In the U.S., FCC rules prohibit incumbent local excha
Low noise amplifier. Typical use: The first stage of a satellite receiver.
Local oscillator
Load regulation refers to circuitry that compensates for changes in load. Most commonly: Circuits that keep voltage constant as load varies.
The temperature measured on the die of the temperature-measuring integrated circuit.
An element or function of an integrated circuit that measures its own die temperature.
Loss of lock
A network that spans distances larger than a local area network (LAN). Because electrical and optical transmissions fade over distance, long-haul networks are difficult and expensive to implement.
LTE (Long Term Evolution) is a high-speed mobile communications cellular standard developed by the 3rd Generation Partnership Project (3GPP). LTE is an evolution of GSM/UMTS standards.
Loss of power
Loss of signal
Low battery detector
Low line output
Low voltage is defined as 50 volts (V) or less.
An element connected between the load and ground. Low-side current sensing applications measure current by looking at the voltage drop across a resistor placed between the load and ground.
Least-significant bit. In a binary number, the LSB is the least weighted bit in the number. Typically, binary numbers are written with the MSB in the left-most position; the LSB is the furthest-right bit.
Large-scale integration (LSI).
Long-Term Evolution (LTE) is a standard for high-speed wireless communication for mobile devices and data terminals, based on the GSM/EDGE and UMTS/HSPA technologies. It birdges the gap between 3G and 4G.
1. The emitted light, projected per unit area, measured in cd/m2(candela per square meter). Often incorrectly equated with "brightness".
Lowest voltage clamp
Low Voltage Differential Signaling
Low Voltage Emitter Coupled Logic
Low Voltage Positive Emitter Coupled Logic
Layout versus schematic
Low Voltage Transistor-Transistor Logic
