The Keithley 6482 is a dual-channel picoammeter and voltage source instrument for precision low-level current measurement and voltage biasing. Each of its two independent channels delivers 6½-digit resolution with current measurement capability from 1 fA to 20 mA, paired with dual ±30 V bias sources. The instrument combines ultralow input bias current (9.50 fA maximum) with minimal voltage burden (4.0 mV maximum), making it ideal for characterizing high-impedance devices and materials in research, semiconductor testing, and component qualification environments.
Technical Specifications
Measurement Performance
• Current range: 1 fA to 20 mA across dual independent channels
• Resolution: 6½-digit measurement capability
• Input bias current: 9.50 fA maximum
• Input voltage burden: 4.0 mV maximum
• DC input impedance: 20 kΩ (≤20 nA ranges), 200 Ω (200 nA–20 mA ranges)
• Measurement accuracy: 1.00% + 2 pA (2.000000 nA range), 0.40% + 2 pA (20.00000 nA range), specified at 23°C ±5°C, <70% RH, after 1 hour warm-up
Voltage Source
• Bias source range: ±30 V dual independent channels
• Output voltage: -10 V to +10 V (inverting output)
• Output impedance: 1 kΩ typical
• Slew rate: 3.0 ms/V typical
Memory & Data Handling
• Buffer capacity: 3000-point per channel (6000 total readings)
• Analog output: 0–10 V scaled voltage for external device feedback
– Key Features
• Dual independent channels for simultaneous multi-point or multi-device measurements
• Programmable current and voltage limits for device protection
• 220 V overload protection
• 3000-point onboard buffer per channel
• Scaled analog output (0–10 V) for real-time monitoring via DMM, DAQ, oscilloscope, or strip chart recorder
– Interfaces & Communication
• RS-232 and IEEE-488 connectivity
• IEEE-488.2 (SCPI) and RS-232 programmability
• Built-in Trigger Link for binning and sweep test operations
• Output Enable connector
– Environmental
• Operating temperature: 0°C to 50°C
• Humidity: 70% RH to 35°C
