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Keithley 6221 AC & DC Precision Current Source
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The Keithley 6221 AC & 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 6220 ideal for applications like Hall measurements, resistance measurements using delta mode, pulsed measurements and differential conductance measurements.
Specifications
Features
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Features
Source and sink (programmable load) 100fA to 100mA
10
14
ohms output impedance ensures stable current sourcing into variable loads
65000-point source memory allows executing comprehensive test current sweeps directly from the current source
Built-in RS-232, GPIB, Trigger Link, and digital I/O interfaces
Reconfigurable triax output simplifies matching the application's guarding requirements
Model 220 emulation mode eliminates need to reprogram existing applications
Instrument control software available for both Macintosh and PC controllers
Source AC Currents from 4pA to 210mA peak to peak for AC characterization of components and materials. The 6221's 10 MHz output update rate generates smooth sine waves up to 100 kHz
Built-in standard and arbitrary waveform generators with 1 mHz to 100kHz frequency range. Applications include use as a complex programmable load or sensor signal and for noise emulation.
Programmable pulse widths as short as 5μs, limiting power dissipation in delicate components. Supports pulsed I-V measurements down to 50μs when used with Model 2182A Nanovoltmeter
Built-in Ethernet interface for easy remote control without a GPIB controller card
Specifications
Applications
Nanotechnology
Differential conductance
Pulsed sourcing and resistance
Optoelectronics
Pulsed I-V
Replacement for AC resistance bridges (when used with Model 2182A)
Measuring resistance with low power
Replacement for lock-in amplifiers (when used with Model 2182A)
Measuring resistance with low noise
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