Agilent/Keysight N2821A

The Keysight N2821A is a single-channel AC/DC current probe designed for precision measurement of low-level current flow in battery-powered devices, integrated circuits, and sub-circuit characterization. Its high sensitivity and dynamic range enable accurate signal reproduction with minimal loading effects across demanding measurement environments.

– Technical Specifications

• Measurement Range: 50 µA to 5 A
• Bandwidth: 3 MHz (Zoom-Out Channel); 500 kHz (Zoom-In Channel)
• Dynamic Range: >1,000:1 (60 dB) normal; >20,000:1 (86 dB) with specific configurations
• Sensitivity: 50 mA
• Rise Time: <0.116 µs (Zoom-Out); 0.7 µs (Zoom-In)
• Noise Floor: 2 mA RMS (typical)
• Accuracy: ±1% of full scale ± probe gain accuracy, or ±1% of reading
• Maximum Input Voltage: 12 V (or ±300 V DC + peak AC with specific configurations)
• Input Coupling: AC/DC
• Output Connector: BNC
• Cable Length: 1.2 m
• Probe Length: 0.16 m
• Dimensions: 145 mm × 22.5 mm × 15.5 mm
• Weight: 70 g (without cable)

– Key Features

• Interchangeable Rsense heads (20 mΩ, 100 mΩ, user-defined 1 mΩ to 1 MΩ)
• Make-Before-Break connector for non-destructive multi-point probing
• Compatible with Keysight AutoProbe high-impedance interface
• Powered by external Keysight oscilloscope or power supply
• Includes MBB receptacles, twisted leads, ground lead, and passive cable

– Typical Applications

• Battery-powered device current consumption analysis
• IC power profiling and characterization
• Sub-circuit current measurement
• Low-level transient capture

– Compatibility & Integration

Compatible with 3000 X-Series, 4000 X-Series, Infiniium S-Series, 9000A Series, and 9000 H-Series oscilloscopes. Not compatible with Infiniium V, 90000A, 90000 X-, and 90000 Q-Series.