MIL-HDBK-1331 Parameters To Be Controlled For The Specification Of Microcircuits, Handbook ForThis handbook describes the parameters required as a minimum for the specification of microcircuits. Parameters, rather than circuits, are considered because circuits vary with the manufacturers involved. Further, circuit designs should be subject to change if improvement results as long as the affected designs are compatible and fully interchangeable. The specific objectives of this document are as follows: a. To provide the minimum parameters that should be specified to ensure adequate evaluation of circuit design and performance. b. To provide maximum commonality of parameters for purpose of test and measurement, within and between major classes of microcircuit types and to allow the recognition of interface problems between types of microcircuits. c. To provide standard abbreviations, definitions and symbols pertinent to the specification of microcircuits. d. To promote maximum interchangeability and compatibility between microcircuits types.

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MIL-HDBK-1331A

APPENDIX A

A.5.2.8  Noise factor (F).  The ratio of the total noise power delivered to the load to the noise power that would be delivered to the load if the only output noise component were due to the thermal noise of the input source resistance at a temperature of 290 K.

A.5.2.9  Power gain or insertion power gain (GP or Gp)t.  The ration, usually expressed in dB, of the signal power delivered to the load(s) to the signal power delivered to the input(s). (dB = 10 log Pload/Psource).

A.5.2.10  Transducer power gain (GT or Gt)t.  The ration, usually expressed in dB, of the signal power delivered to the load(s) to the signal power available from the source. (dB = 10 log Pload/Psource).

A.5.2.11  Input bias current (IIB).  The current into * the input or the average of the currents into * the inputs when the device is in the quiescent or balanced state.

A.5.2.12  Input offset current (IIO).  The difference between the currents into * the  input terminals of a differential-input device in the quiescent or balanced state.

A.5.2.13  Noise figure (NF).  Noise factor expressed in decibels.

A.5.2.14  DC power dissipation (PD).  The total DC power supplied to a device less any power delivered from the device to a load.

A.5.2.15  Power supply rejection ratio (PSRR or dVIO/dVCC dVIO/dVDD, etc).  The ratio of the change in input offset voltage to the corresponding change in value of one power supply voltage with all remaining power supply voltages held constant.

A.5.2.16  Slew rate (SR).  The time rate of change of the closed-loop amplifier output voltage for a step- signal input.  Normally, slew rate is measured using the largest input voltage step for which the amplifier performance remains linear with feedback adjusted for unity gain.

A.5.2.17  Total harmonic distortion (THD).  The ratio, expressed in percent, of the RMS voltage of all harmonics present in the output to the total RMS voltage of the output for a pure sine wave input.  The RMS voltages are measured at an output terminal with respect to ground.

A.5.2.18  Transient response (TR).  The closed-loop step function response of an amplifier under small- signal conditions.

A.5.2.19  Overload recovery time (tor).  The time required for an amplifier to recover its ability to perform amplification within stated specification limits after the output voltage amplitude has been distorted by the application of a specified input voltage in excess of rated amplitude.

t Upper-case subscripts indicate large-signal quantities; lower-case subscripts indicate small-signal quantities.

* Current flowing out of a terminal may be considered as a negative quantity.

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