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MFLI

500 kHz / 5 MHz Lock-in Amplifier

Key Features

  • Analyze, generate and control from DC to 500 kHz or 5 MHz
  • Precisely measure current and voltage
  • Fast measurement time and low noise floor
  • Configurability with multiple auxiliary input/outputs
  • LabOne toolset including Scope, Sweeper, and Spectrum Analyzer
  • Expand your toolset with upgrade options

Variants

Price

CHF 6,290

Pricing shown is ex-works Zurich and only valid for the selected region

Any questions? Contact Us for pricing information

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The Zurich Instruments MFLI is a digital lock-in amplifier that covers the frequency range from DC to 500 kHz (and up to 5 MHz when upgraded). Thanks to its embedded data and web servers, the MFLI can be used directly with any device running a web browser without further software installations. With its carefully developed analog and digital front ends and the fast digital processing afforded by the on-board FPGA, the MFLI combines its excellent performance with the LabOne user interface.

Related Publications

M. Houot, Z. Qiao, B. Hu, D. Nodari, F. Furlan, F. Aniés, Y. Yang, M. Heeney, A. A. Bakulin and N. Gasparini

The Dynamics of Interfacial Trap States in High-Detectivity Near-Infrared Photomultiplication Organic Photodetectors

Advanced Functional Materials

DOI: https://doi.org/10.1002/adfm.202518210

Matilde Brunetta et al.

Selective Charge Extraction Allows Fast Photomultiplication and Imaging in Rigid and Ultra-Flexible SWIR Organic Photodiodes

Advanced Energy Materials

DOI: https://doi.org/10.1002/aenm.202506776

Valentin Fonck, Mohammadali Razeghi, Jean Spiece, Phillip Dobson, Jonathan Weaver, George Ridgard , Grayson Noah and Pascal Gehring

Characterization of Heat Transfer in 3-D CMOS Structures Using Sideband Scanning Thermal Wave Microscopy

IEEE Xplore

Link to paper

Ma, H., Chen, Y., Qiao, S., He, Y., & Ma, Y.

A high sensitive methane QEPAS sensor based on self-designed trapezoidal-head quartz tuning fork and high power diode laser

Photoacoustics 42, 100683 (2025)

DOI: https://doi.org/10.1016/j.pacs.2025.100683

Zhiyu Feng a,b , Chaotan Sima a,b,* , Tailin Li a,b, Wenzhe Wang a,b, Yufeng Pan a,b, Lihua Wang c, Zhiwen Ming d, Ping Lu

Highly-sensitive photoacoustic gas sensor with dual resonant modalities for simultaneous NO and NO2 detection

Sensors and Actuators B: Chemical, Volume 434, 1 July 2025, 137596

DOI: 10.1016/j.snb.2025.137596

MF-F5M

Frequency Extension

Zurich Instruments MF F5M Frequency Extension

Key Features

  • Extends the frequency range of a 500 kHz MF instrument from 500 kHz to 5 MHz
  • Field-upgradeable option
  • Compatible with other options
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MF-MD

Multi-Demodulator Option

Zurich Instruments MF MD Multi Demodulator

Key Features

  • 4 demodulators instead of 1
  • 4 oscillators instead of 1
  • 2 impedance measurement units instead of 1 on the MFIA
  • 2 external reference PLLs instead of 1
  • Field-upgradeable option
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MF-MOD

AM/FM Modulation Option

Zurich Instruments MF MOD AM/FM Modulation

Key Features

  • Simultaneous amplitude modulation and demodulation
  • Simultaneous frequency modulation and demodulation
  • Adjustable filter settings for each frequency component
  • Sideband separation (single-sided modulation)
  • Analysis of higher-order sidebands and multiple carrier frequency
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MF-PID

Quad PID/PLL Controller Option

Zurich Instruments MF PID Quad PID/PLL

Key Features

  • 4 independent PID controllers with PLL capability
  • PID Advisor (for adjustment of target bandwidth)
  • Auto Tune PID (for minimization of average PID error signal)
  • 50 kHz maximum loop filter bandwidth
  • Phase unwrap for demodulator phase data (± 1024 π)
  • Low-pass filter for derivative branch
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MF-DIG

Digitizer Option

Zurich Instruments MF DIG Digitizer

Key Features

  • Dual-trace oscilloscope with 16 bits, 60 MSa/s, FFT
  • 2.5 MSa memory per channel
  • 7 MHz input bandwidth
  • 30 MHz FFT span, 1 M points
  • High-definition mode HD24
  • Segmented and continuous digitizing
  • Hardware trigger engine with additional trigger inputs and outputs
  • LabOne® user interface and API integration
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MF-IA

Impedance Analyzer Option

Zurich Instruments MF IA Impedance Analyzer

Key Features

  • 1 mHz to 500 kHz / 5 MHz, 1 mΩ to 1 TΩ
  • 0.05% basic accuracy
  • Compensation Advisor and Confidence Indicator
  • LabOne® Sweeper tool for frequency, bias voltage, and test signal amplitude response measurements
  • LabOne APIs for Python, C, MATLAB®, LabVIEW™ and .NET
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MF-BOX

Boxcar Averager Option

Option Box MF-BOX

Key Features

  • 1 boxcar averaging unit
  • Input selectable between Voltage or Current Input
  • Up to 500kHz/5MHz repetition rate
  • Zero acquisition dead time
  • Baseline suppression and differential measurements
  • Up to 1 million averaging periods
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