Sample and Hold With Offset Adjustment

Posted on January 22, 2010 by Adam

This is a simple sample and hold with offset adjustment circuit. Sample and hold circuit is used to operate on analog information in a time frame which is expedient. This circuit works by sampling a segment of the information and holding it. And then convert it into some readout or form of control signal. Here is the circuit:
Sample and Hold With Offset Adjustment circuit schematic diagram
This circuit uses the 2N4339 JFET because it has low pinch-off voltage, very-low ID(off) (<50pA), and low IGSS(<100pA). This is a low leakage circuit, because the leakage level of this circuit is on clean, solder-resin free. [Source: National Semiconductor Application Note]

This entry was posted in Signal Processing and tagged . Bookmark the permalink.,

Possibly Related to "Sample and Hold With Offset Adjustment" Circuits

  • Low Drift Sample and Hold
    This is a circuit of low drift sample and hold. This circuit uses two JFET, Q1 and Q2 that provides the sample and hold capacitor, C1. Q1 provides a path, Rds(on), for C1 and turned on during sample. Q2 IGSS … Continue reading →...
  • Fast Sample-And-Hold
    Sample and hold circuit is used to pick a signal and hold the level at its output, making it useful for analog digital conversion or other application where the processing need a constant level signal for the input. The circuit … Continue reading →...
  • LM412 Sample and Hold
    This is a LM412 sample and hold circuit. This circuit uses discrete components. This circuit also uses MPF102 JFET transistor and LM412 dual op-amps. The source is prevented to charge the capacitor by the MPF102. The LM412 is used because … Continue reading →...
  • Digital Sample And Hold
    If you need to hold an analog signal for infinite period then this digital sample and hold circuit is the solution.  This circuit uses a Exar XR-2240 programmable timer/counter as main component. The Exar XR-2240 is triggered when strobe input … Continue reading →...
  • 100 kHz Free Running Multivibrator
    This free running oscillator employs LM111 comparator. The output of this oscillator is square wave. You can use this square wave oscillator for general purpose. Here is the schematic diagram of the circuit: [Source: National Semiconductor Application Note]...

Comments are closed.