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.
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.
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 13 pA/√Hz |
Lemo® connector Transimpedance amplifier, gain 1 kV/A Noise 13 pA/√Hz |
Sensitivity (Full Scale) |
Voltage: 3 µV to 100 mV, switchable in 1-3-10 steps Current: 3 nA to 100 µA, switchable in 1-3-10 steps |
|
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 Dynamic Reserve |
35 dB @ low drift setting, 55 dB @ high dynamic setting | |
Time Constants | 3 ms to 10 s, switchable in 1-3-10 steps, slope switchable 6 dB or 12 dB/octave | |
Output | X = in phase, ±10 V full scale, short-circuit protected | |
Digital Control | 16 TTL, CMOS, opto-isolated 8-bit phase, 4-bit time constant, 4-bit sensitivity |
|
Power Supply | ±15 V, 100 mA typ. | |
Case | 170 x 60 x 30 mm (L x W x H), weight 370 g | |
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
With the extremely low-noise quartz tuning fork charge amplifier HQA-15M-10T, FEMTO has added an application-specific amplifier to its product range.
With the completely newly developed HBPR photoreceiver / photodetector platform, FEMTO has raised the bar in the field of balanced photoreceivers to a new level.
FEMTO® Messtechnik GmbH
Klosterstraße 64
10179 Berlin
Germany
Phone: +49-(0)30-280 4711-0
Fax: +49-(0)30-280 4711-11
Email: info@femto.de
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