Agilent/Keysight CX1103A

The Keysight CX1103A is a low-side current sensor module for the CX3300 Series Device Current Waveform Analyzer. It enables high-bandwidth, wide-dynamic-range current characterization of surface mount devices and discrete components by measuring waveforms with femtoampere sensitivity and nanosecond-scale timing resolution. The sensor uses offset-adjustable transimpedance technology to capture current behavior from picoampere levels to 20 mA, making it essential for IoT device profiling, power-state transition analysis, and impedance characterization in R&D and manufacturing environments.

– Technical Specifications

• Measurement Bandwidth: Up to 200 MHz
• Dynamic Current Range: 100 pA to 20 mA
• Absolute Maximum Input Current: 125 mA (fuse protected)
• Rise Time (10% to 90%): 0.35 / Bandwidth [MHz]
• Input Resistance: 4 Ω typical or 50 Ω typical selectable
• Burden Voltage: Low, determined by selectable input impedance
• Common Mode Voltage (50 Ω ON): ±1 V maximum
• Common Mode Voltage (50 Ω OFF): ±0.5 V maximum
• Input Common-Mode Impedance: 750 MΩ // 31 pF nominal
• Measurable Over Range: 10% of selected range
• Connector: SMA jack (center pin positive, outer conductor ground)

– Key Features

• Low-side current measurement topology with circuit common reference
• Offset-adjustable design allows small AC waveform measurement on large DC bias currents
• Selectable input impedance (4 Ω or 50 Ω) optimizes for different measurement scenarios
• Femtoampere sensitivity floor supports ultra-low-power device characterization
• Minimal parasitic effects ensure accurate impedance analysis of discrete and integrated components
• Fuse-protected input prevents damage from overcurrent conditions
• Includes BNC-to-SMA adapter for flexible integration

– Typical Applications

• Bluetooth Low Energy current consumption profiling
• MCU low-power mode transition analysis
• IoT device power characterization and debug
• Current waveform acquisition for impedance measurement of SMDs
• Quality control validation in manufacturing environments

– Compatibility & Integration

The CX1103A is a dedicated accessory for the Keysight CX3300 Series Device Current Waveform Analyzer mainframe and connects via SMA connector.