What is acquisition time?

Q.  The requisite amount of time for output in order to track an input within the specific error band after delivering the sample command while designing sample and hold circuitry is known as ___________
- Published on 25 Sep 15

a. Aperture time
b. Hold mode settling time
c. Acquisition time
d. Sampling time

ANSWER: Acquisition time

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    Discussion

  • Satyawati Patil   -Posted on 06 Oct 15
    While designing the sample and hold circuit, several time-related parameters are taken into consideration such as acquisition time, aperture time, hold mode settling time,etc.

    Acquisition time is basically the time required for an output to track input within a specific error band after the execution of sampling command.

    The time period during which an analog to digital converter (ADC) reads an input signal is termed as an 'Aperture Time'. The terms like resolution, frequency rejection and measurement speed act as the functions of an aperture time.

    The time taken by the output to settle between the range of specified error band after an execution of hold command, is known as 'Hold Mode Settling Time'. This time is very significant because the summation of acquisition time, A/D conversion time and the hold mode settling time helps in determining the maximum value of sampling rate for sample/hold ADC system.

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