MFLI series 500k/5M transformer

500 kHz / 5 MHz, 120 dB dynamic retention, replacing and surpassing the new generation lock-in amplifier of Stanford SR830.

The Swiss company's MFLI series 500k/5M lock-in amplifier redefines the standard for measuring weak signals at low to medium frequencies, including two specifications: DC-500kHz and DC-5MHz (which can be upgraded from 500kHz to 5MHz). The MFLI lock-in amplifier from Zurich Instruments in Switzerland integrates carefully developed analog and digital front-end and combines the advantages of fast digital processing with FPGA technology, surpassing the SR830 lock-in amplifier comprehensively. The MFLI series 500k/5M lock-in amplifier combined with the outstanding LabOne software toolbox has extremely superior performance. Embedded data and web servers allow direct connection to any web browser running on any device.

Keywords: lock-in amplifier, low-frequency lock-in amplifier, lock-in amplifier, high-frequency lock-in amplifier, FPGA lock-in amplifier, dual channel lock-in amplifier, digital lock-in amplifier, analog lock-in amplifier, biphasic lock-in amplifier, Lock-in Amplifier； SR830 lock-in amplifier

Zurich MFLI lock-in amplifier

Zurich Instruments has defined a new standard for low to medium frequency measurements using lock-in amplifiers, including two specifications: DC-500kHz and DC-5MHz (which can be upgraded from 500kHz to 5MHz). Integrating carefully developed analog and digital front-end and combining the advantages of FPGA technology for fast digital processing. The MFLI lock-in amplifier, combined with the outstanding LabOne software toolbox, has extremely superior performance. Embedded data and web servers allow direct connection to any web browser running on any device.


Key characteristics of Zurich Instruments lock-in amplifier:
Ø DC-500kHz/5 MHz, 60MSa/s, 16bit
Ø Current input and differential voltage input
Ø Phase resolution 10 μ deg
Ø Frequency resolution 1 μ Hz
LabOne Toolbox: Cleaners, Spectrum analyzers, and more
Ø Embedded web server
USB 2.0 and 1 GbE high-speed connection
Ø Power options: AC or 12V DC, for example Battery operation
Ø Upgradeable


A brief comparison between Zurich Instruments MFLI lock-in amplifier and Stanford SR830 lock-in amplifier:
1. Frequency range: SR830 1mHz-102.4kHz Zurich MFLI DC-500kHz
2. Dynamic retention: SR830>100dB Zurich MFLI>120dB
3. Phase resolution: SR830 0.01 ° Zurich MFLI 0.00001 °
4. Time constant: SR830 10 μ s-30ks Zurich MFLI 500ns-76s


Zurich Instruments MFLI lock-in amplifier overview video:

LabOne software demonstration

Application of Zurich Instruments MFLI lock-in amplifier:
Optical chopper application
Ø Applications (e.g. high-power lasers)
Ø Material research
Ø Quantum and Nanoelectronics
Ø Scanning tunneling microscopy
Ø Physics
Ø Total Resistance Spectroscopy
Ø Earthquake detection


Functional diagram of Zurich Instruments MFLI lock-in amplifier:

The front panel of the MFLI lock-in amplifier from Zurich Instruments in Switzerland includes: 1 current signal input, 1 differential voltage input, 1 differential signal output, 2 auxiliary inputs (reference inputs), and 4 auxiliary outputs. The experimental signal input and output can be operated in both single ended and differential modes to avoid external interference. Signal grounding can be referenced by instrument grounding or BNC shielding of input signals.

The basic equipment supports voltage measurement and current measurement, but simultaneous measurement of current and voltage requires MF-MD configuration. The impedance characteristic variables of the analog front-end input are the same as the AC/DC coupling option, and high-frequency analog to digital sampling provides a large oversampling factor, ensuring superior lock-in performance and signal high fidelity.

The results of phase-locked measurements, such as X, Y, R, and Θ for each demodulator, can be used in the following ways:

The analog output of any auxiliary output on the front panel. The scaling and compensation of each signal can be set, and a sampling rate of 612kSa/s ensures that all demodulation signal components are available on the physical connection. The signal bandwidth is the same part of all signals and can reach up to 200kHz. By transferring to the host via USB 2.0 or 1GbE and displaying on the LabOne user interface, customers can use several LabOne tools to analyze signals and store them locally.

The rear panel provides BNC connectors with 2 trigger inputs, 2 trigger outputs, and 1 input and 1 output synchronized with a 10MHz clock. In addition, the SCSI connector provides all DIO pathways.


Zurich MFLI lock-in amplifier product specifications:

Signal input (voltage and current)
Frequency range: DC - 500 kHz
DC - 5 MHz (with MF-5FM)
Input impedance: 50 Ω or 10 M Ω | | 20pF
Input voltage noise:< 3>3>
Input range: 3.3 mV to 3.3 V
Dynamic retention:> 120 dB
Input sensitivity range: 1 nV to 3.3 V
A/D conversion: 16 bits, 60 MSa/s

signal output
Frequency range: DC - 500 kHz / 5 MHz
Output range: ± 10 mV, 100 mV, 1 V, 10 V
Signal adder (Aux In 1): ± 10 V, DC - 500 kHz / 5 MHz
D/A conversion: 16 bits, 60 MSa/s

Demodulator&reference
Number of demodulates: 1 dual phase (4 with MF-MD)
Output sampling rate: over LAN: up to 200 kSa/s
on Aux outputs: 612 kSa/s
Time constant: 500 ns to 76 s
Measurement bandwidth: 80 μ Hz to 200 kHz
Slope (dB/): 6, 12, 18, 24, 30, 36, 42, 48
Phase resolution: 10 μ deg
Frequency resolution: 1 μ Hz

Auxiliary&Other
Auxiliary output: 4 channels, ±10 V, amplitude,
X, Y, R, ϴ, frequency, manual
Auxiliary input: 2 channels, ±10 V, 15 MSa/s
Connectivity: LAN / Ethernet, 1 GbE
USB 2.0, 480 MBit/s
USB 2.0 Host (dual)
Clock: 10 MHz input and output
Digital I/O: 4 x 8 bit, bidirectional