Lock-In Amplifier Modules LIA-MV-150


  • Current and voltage input
  • Working frequency up to 45 kHz
  • Adjustable sensitivity, time constant and phase
  • Local and remote control
  • Compact and EMI-shielded case
ModelLIA-MV-150-S Single-EndedLIA-MV-150-D Symmetric / Differential
Voltage InputBNC socket, single-ended, noise 12 nV/√HzLemo®socket, differential, noise 12 nV/√Hz
Current InputBNC socket, gain 1 kV/A, noise 13 pA/√HzLemo®socket, gain 1kV/A, noise 13 pA/√Hz
Input Sensitivity (Full Scale) voltage: 3 µV bis 100 mV, current: 3 nA bis 100 µA, switchable in steps of 1-3-10
Working Frequency10 Hz – 45 kHz
Reference Input±100 mV to ±5 V, switchable to TTL
Phaseadjustable 0° – 360° (8-bit resolution), temperature drift <0,01°/K
Demodulator Dynamic Reserve35 dB @ low drift setting, 55 dB @ high dynamic setting
Time Constants3 ms to 10 s, switchable in 1-3-10 steps, slope switchable 6 dB or 12 dB/octave
OutputX = in phase, ±10 V full scale, short-circuit protected
Control Interface16 Opto coupler protected digital inputs, TTL/CMOS compatible 8 bit phase, 4 bit time constant, 4 bit sensitivity
Power Requirements±15 V, 100 mA typ.
Case170 x 60 x 30 mm (L x W x H), weight 370 g

Power supply via 3-pin Lemo® socket. A mating connector is provided with the device. Optional power supply PS-15 available. For further information please view the datasheet.

Compact module

In modern optoelectronic systems lock-in-amplification is one of the most useful techniques to get rid of unwanted noise and to improve the measurement sensitivity. Therefore we have created a miniaturized, powerful module operating reliably even in heavy noise environments.

Two ways of programming

The amplifier settings – e.g. phase, gain, time constant – are controlled either by switches directly on the amplifier module or externally using a standard digital I/O computer board. The variable working frequency is determined by an external reference signal which may be e.g. the synchronization signal of a chopper wheel or the modulation signal of a laser. The current input is well suited for amplifying signals from high impedance sources like photodiodes or PMTs while the voltage input can be used to measure signals from low impedance sources like pyros or coils.

Block Diagram LIA-MV-150


  • Spectroscopy
  • Laser stabilization
  • Luminescence, fluorescence, phosphorescence measurements
  • Light scattering measurements
  • Opto-electronical quality control
  • Integration in industrial and scientific measurement systems
  • OEM systems

Related products / accessories

Power Supply

USB Control Interface LUCI-10