Keithley 595

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The Keithley Model 595 Quasistatic C-V Meter measures quasistatic capacitance versus voltage (C-V) characteristics of Metal Insulator Semiconductor (MIS) semiconductor devices. The C-V measurement technique used by the Model 595 provides diagnostics and correction for common sources of errors to increase confidence in test results.Its current function serves as a sensitive picoammeter, directly measuring DC currents to 1fA. The built-in +/- 20V voltage source with DC, stair-case, and squarewave waveforms permits both current and quasistatic capacitance measurements to be made either at a single device bias or as a function of voltage. This measurement flexibility makes the Model 595 appropriate for characterization of many semiconductor materials and components.Quasistatic C-V measurements in the Model 595 are made using the “feedback charge” technique. Use of this technique makes it easy to measure quasistatic C-V characteristics of devices that would be unsuitable for testing with the traditional ramp method and static or Q-V methods.
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