The Keysight E4990A Impedance Analyzer delivers high-precision impedance measurements across 20 Hz to 10/20/30/50/120 MHz with selectable frequency options. Built for R&D, manufacturing, and quality assurance, this instrument combines ±0.08% basic accuracy (typical ±0.045%) with flexible measurement configurations to characterize components, materials, and assemblies across impedance ranges from 25 mΩ to 40 MΩ.
– Technical Specifications
Frequency Range
• 20 Hz to 10, 20, 30, 50, or 120 MHz (upgradable options)
Impedance Measurement
• Accuracy: ±0.08% (typical ±0.045%)
• Range: 25 mΩ to 40 MΩ (within 10% measurement accuracy)
• Parameters: |Z|, |Y|, θ, R, X, G, B, L, C, D, Q, Cp, Cs, Lp, Ls, Rp, Rs, Complex Z, Complex Y, Vac, Iac, Vdc, Idc
DC Bias
• Voltage: 0 V to ±40 V, 1 mV resolution, ±[0.1% + (5 + 30 × |Imon|)] mV accuracy (typical)
• Current: 0 A to ±100 mA, 40 µA resolution, ±[2% + (0.2 + |Vmon|/20)] mA accuracy (typical)
AC Signal Source
• Voltage: 5 mVrms to 1 Vrms, 1 mV resolution
• Current: 200 µArms to 20 mArms, 20 µA resolution
• Auto Level Control (ALC) maintains signal accuracy across frequency range
Measurement Speed
• Option 120: 3 msec/point (fast mode, ≥100 kHz)
• Options 010/020/030/050: 30 msec/point (fast mode, ≥100 kHz)
• Enhanced speed option (Option 001) available
– Key Features
• Four-terminal pair measurement standard; 7-mm 1-port via 42942A Terminal Adapter
• Impedance probe support using 42941A accessory
• 10.4-inch color LCD touch screen with 4-channel, 4-trace display
• Equivalent circuit analysis with seven multi-parameter models
• Limit line testing for go/no-go production screening
• Handler interface for automated test system integration
• Specifications warranted at 23 °C ± 5 °C after 90 minutes warm-up
– Typical Applications
• Component characterization and validation
• Materials analysis and dielectric measurement
• Semiconductor device testing
• Manufacturing quality assurance
• Equivalent parameter extraction
– Compatibility & Integration
• Keysight 42942A Terminal Adapter for 7-mm 1-port measurements
• Keysight 42941A impedance probe support
• Handler interface integration for production automation
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