6221

Ultra-sensitive DC Precision Current Source

The Keithley 6221 DC Current Source combines ease of use with exceptionally low current noise. Low current sourcing is critical to applications in test environments ranging from R&D to production, especially in the semiconductor, nanotechnology, and superconductor industries. High sourcing accuracy and built-in control functions make the 6221 DC Current source ideal for applications like Hall measurements, resistance measurements using delta mode, pulsed measurements, and differential conductance measurements.

The need for precision, low current sourcing

Device testing and characterisation for today’s very small and power-efficient electronics requires sourcing low current levels, which demands the use of a precision, low current source. Lower stimulus currents produce lower—and harder-to-measure voltages across the device. Combining the Keithley 6221 with a 2182A Nanovoltmeter makes it possible to address both of these challenges

AC current source and current source waveform generator

The Keithley 6221 is the only low-current DC source on the market. Before its introduction, researchers and engineers were forced to build their own DC current sources. This cost-effective source provides better accuracy, consistency, reliability, and robustness than “homemade” solutions. The 6221 DC Precision Current source is also the only commercially available current source waveform generator, which greatly simplifies creating and outputting complex waveforms

Define and execute current ramps easily

The Keithley 6221 offers tools for defining current ramps and stepping through predefined sequences of up to 65,536 output values using a trigger or a timer. The 6221 source supports linear, logarithmic, and custom sweeps.