Keithley 6221

The Keithley 6221 AC and DC Cur Source combines ease of use with exceptionally low cur noise. Low cur 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 Keithley 6221 AC and DC Cur Source ideal for applications like Hall measurements, resistance measurements using delta mode, pulsed measurements, and differential conductance measurements.

Features and Specifications of the Keithley 6221 AC and DC Cur Source include:

• Source and sink (programmable load) 100fA to 100mA
• 10¹⁴Ω output impedance ensures stable cur sourcing into variable loads
• 65000-point source memory allows executing comprehensive test cur sweeps directly from the cur 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
• Source AC currents from 4pA to 210mA peak to peak for AC characterization of components and materials. The 6221's 10MHz output update rate generates smooth sine waves up to 100kHz
• Built-in standard and arbitrary waveform generators with 1mHz 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