HF2LI 50 MHz Lock-in Amplifier

The Zurich Instruments HF2LI is a digital lock-in amplifier covering the frequency range between DC and 50 MHz. It is the instrument of choice for the characterization of MEMS devices such as gyroscopes and for measurements in the area of microfluidics.

The HF2LI is equipped with the Zurich Instruments control software LabOne, which provides a web-based user interface featuring a spectrum analyzer, a sweeper and a basic oscilloscope, among others. A number of upgrade options can extend the functionality of the HF2LI to adapt to different applications. Furthermore, combining the HF2LI with the HF2TA Current Amplifier enables direct current readout.


  • DC - 50 MHz, 210 MSa/s
  • 2 independent lock-in units, 2 signal generators
  • 1 fundamental and 2 harmonics per lock-in unit
  • 4 auxiliary outputs, 2 auxiliary inputs
  • USB 2.0, 480 Mbit/s
  • LabOne® toolset including Scope, Sweeper, and Spectrum Analyzer


The Zurich Instruments HF2LI is a high-frequency dual channel lock-in amplifier that uses the latest hardware and software technologies to provide industry leading specification and functionality. The dynamic reserve of 120 dB sets the benchmark in the 50 MHz frequency range. In many setups a single HF2LI replaces multiple conventional instruments. The basic instrument functionality can be extended with the following upgrade options:

  • HF2LI-MF Multi-frequency
  • HF2LI-PID Quad PID Controller
  • HF2LI-PLL Dual Phase-locked Loop
  • HF2LI-MOD AM/FM Modulation

These options are upgradable in the field. For current measurements we offer the HF2TA Current Amplifier as an active probe that can be placed close to the setup, e.g. for 4-probe measurements.


HF2LI Datasheet


This product is manufactured by Zurich Instruments.

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