Dictionary C

current, dc [base terminal (IB), collector terminal (IC), emitter terminal (IE)]

The value of the dc current into the terminal indicated by the subscript.

References:

JESD10, 9/81

current, instantaneous total value [base terminal (iB), collector terminal (iC), emitter terminal (iE)] terminal (iE)]

The instantaneous total value of alternating current into the terminal indicated by the subscript.

References:

JESD10, 9/81

current, rms value of alternating component [base terminal (Ib), collector terminal (Ic), emitter terminal (Ie)]

The root-mean-square value of alternating current into the terminal indicated by the subscript.

Illustration of the proper use of symbols

References:

JESD10, 9/81

current-limit sense voltage (of a voltage regulator)

The current-sense voltage at which current limiting occurs.

References:

JESD99B, 5/07

current-regulator diode

A diode that limits current to an essentially constant value over a specified voltage range.

Graphic symbol (ref. IEEE Std 315):

References:

JESD77-B, 2/00

current-sense voltage (of a voltage regulator)

The voltage that is a function of the load current and is normally used for control of the current-limiting circuitry.

References:

JESD99B, 5/07

custom integrated circuit

An integrated circuit developed or produced to conform to unique requirements.

NOTE The terms "full custom" and "semicustom" refer to layout methodologies. The choice of term is subjective, depending on the interpretation of the ratio of unique layouts to standard macrocell layouts from a library.

References:

JESD99A#, 5/00

customer-processed component

A component that has been soldered to or de-soldered from a circuit board or other mounting surface by the customer.

References:

JESD22-B101A, 10/04

customer-specific standard product (CSSP)

An integrated circuit developed and produced for a single customer but for multiple applications or functions.

References:

JESD99A#, 5/00

cutoff frequency

The frequency at which the voltage amplification is 3 dB below the voltage amplification at a specified frequency.

References:

JESD99B, 5/07

cycle

(1) A sequence of operations in which one set of events is completed.

(2) Any set of operations that is repeated regularly in the same sequence.

NOTE The operations may be subject to variations on each repetition. (Ref. ANSI X3.172.)

References:

JESD100-B, 12/99

cycle time

The time interval between the start and the end of a cycle.

NOTE The cycle time is the actual time interval between two signal events and is determined by the system in which the digital circuit operates. A minimum value is specified that is the shortest interval that must be allowed for the digital circuit to perform a specified function (e.g., read, write, etc.) correctly.

References:

JESD100-B, 12/99

cycle-to-cycle period jitter (tjit(cc))

The variation in cycle time of a signal between adjacent cycles, over a random sample of adjacent cycle pairs.

References:

JESD65B, 9/03

cycles to acquire PLL lock (nL)

The number of input clock cycles required for a phase-locked loop (PLL) to lock when operating in the guaranteed operating range with a stable input reference clock frequency.

References:

JESD65B, 9/03

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