Lock-In Amplifier Modules
Series 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

 

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.
Applications
  • Spectroscopy
  • Laser Stabilization
  • Luminescence, Fluorescence, Phosphorescence Measurements
  • Light Scattering Measurements
  • Opto-Electronical Quality Control
  • Integration in Industrial and Scientific Measurement Systems
  • OEM Systems  
Model LIA-MV-150-S
Standard		 LIA-MV-150-D
True-Differential Input
Voltage Input BNC-Connector
Single-Ended
Instrumentation-Amplifier
Noise 12 nV/√Hz		 LEMO-Connector
True-Differential
Instrumentation-Amplifier
Noise 12 nV/√Hz
Current Input BNC-Connector
Transimpedance-Amplifier, Gain 1 kV/A
Noise 4 pA/√Hz		 LEMO-Connector
Transimpedance-Amplifier, Gain 1 kV/A
Noise 4 pA/√Hz
Sensitivity
(Full Scale) 		Voltage: 3 µV to 100 mV, Switchable in 1-3-10
Current: 3 nA to 100 µA, Switchable in 1-3-10
Working Frequency 10 Hz - 45 kHz
Reference Input ± 100 mV to ± 5 V, Switchable to TTL
Phase Adjustable 0° - 360° (8-bit Resolution),
Temperature Drift < 0,01°/K
Demodulator 50 dB max. Dynamic Reserve
Time Constants 3 ms to 10 s, Switchable in 1-3-10, Slope Switchable 6 dB or 12 dB/Octave
Output X [R · cos(angle)], ± 10 V Full Scale, Short-Circuit Protected
Digital Control 16 TTL, CMOS, Opto-Isolated
8 Bits Phase, 4 Bits Time Constant, 4 Bits Sensitivity
Power Supply ± 15 V, 100 mA typ.
Case 170 x 60 x 30 mm (L x W x H), Weight 370 g
View and Download Datasheet 201 kB
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.

 
Block Diagram LIA-MV-150


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