1. Basic Specifications

• Frequency Range: E4990A features an extremely wide frequency range from 20 Hz to 120 MHz, enabling it to adapt to various measurement scenarios and requirements.

• Measurement Accuracy: This device delivers excellent fundamental impedance measurement accuracy, reaching ±0.08% (±0.045% typical), which is an industry-leading level.

• Impedance Measurement Range: Its wide impedance measurement range covers from 25 mΩ to 40 MΩ (within 10% measurement accuracy range), satisfying measurement requirements for various impedance ranges.

2. Features

• DC Bias Source: E4990A has a built-in DC bias source, which provides bias voltage and current from 0 V to ±40 V, 0 A to ±100 mA, delivering higher accuracy and reliability for measurements on circuits containing capacitors or inductors.

• Multiple Measurement Parameters: In addition to basic impedance measurement functions, E4990A supports a variety of measurement parameters, including |Z|, |Y|, θ, R, X, G, B, L, C, D, Q, complex Z, complex Y, Vac, Iac, Vdc, Idc, etc. These parameters help engineers gain comprehensive understanding of the performance and characteristics of components.

• Equivalent Circuit Analysis: This instrument is equipped with equivalent circuit analysis function, supporting 7 different multi-parameter models. It can simulate the equivalent parameter values of components, helping engineers better understand and analyze impedance data.

• Enhanced Measurement Speed Option: To improve measurement speed and efficiency, E4990A provides the enhanced measurement speed option (Option 001). This option enables faster measurement within the 10M/20M/30M/50M frequency range, which can significantly reduce measurement time and improve work efficiency.

• Data Analysis: The limit line test function helps engineers determine whether components meet design requirements and specification parameters.

3. Display and User Interface

• Color LCD Touch Screen: The E4990A is equipped with a 10.4-inch color LCD touch screen, which can display 4 channels and 4 traces simultaneously, making measurement results more intuitive and easier to analyze.

4. Application Example

• Passive components: Impedance measurement for capacitors, inductors, ferrite beads, resistors, transformers or crystal/ceramic resonators.

• Semiconductor Components: C-V characteristic analysis of varactor diodes, and impedance evaluation of diodes, transistors, amplifiers or MEMS.

• Dielectric and Magnetic Materials: Evaluation of dielectric constant and loss factor for plastics, ceramics and printed circuit boards, as well as permeability and loss factor testing for ferrites and amorphous materials.

In conclusion, with its excellent performance, rich functions and wide application range, the E4990A Impedance Analyzer occupies an important position in the testing and measurement field of electronic components, semiconductor devices and materials.