
Digital Lock-in Amplifier
LIA001M
CIQTEK LIA001M is a high-performance lock-in amplifier that combines various functions such as lock-in amplification, virtual oscilloscope analysis, parameter scanning, demodulation plotting, and data analysis.
Based on advanced digital signal processing technology and hardware design, it can accurately and quickly detect weak signals drowned in strong noise.
It is one of the important tools for modern weak signal detection and analysis and can be used in various scientific research and industrial applications.

DC ~ 1 MHz demodulation frequency

Current and differential voltage input

100 MSa/s, 16 bit ADC sampling

Full-scale sensitivity from 1 nV to 3 V

Better than 3.1 nV/√Hz noise density

More than 120 dB dynamic reserve

Support Sine and TTL reference signal input and output

3 types of phase-locked demodulation modes: internal reference, external reference, and dual reference

Support 1/1023~1023th harmonic detection function



Applications





Parameters
Signal Inputs (Voltage and Current)
Voltage Channel | 1 (single-ended and differential) |
Current Channel | 1 |
Frequency Range | 200 uHz ~ 1 MHz |
Voltage Input Range | ±1 mV,±3 mV,±10 mV,±30 mV, |
±100 mV,±300 mV,±1 V,±3 V | |
Voltage Input Noise | 3.1 nV/√Hz@1 kHz |
Full-scale Input Sensitivity (Voltage Input) | 1 nV-3 V |
Current Input Range | ±1 nA,±10 nA,±100 nA,±1 µA, |
±10 µA,±100 µA,±1 mA,±10 mA | |
Current Input Noise | 20 fA/√Hz@100 Hz |
Full-scale Input Sensitivity (Current Input) | 10 fA ~ 10 mA |
Dynamic Reserve | ≥120 dB |
Demodulator Reference
Number of Demodulators | 1 dual-phase demodulators |
Reference Mode Selection | Internal reference, external reference, dual reference |
Harmonic detection | Support (n/m)* F Harmonic measurement, (n/m)* F≤1 MHz; |
Range of n (harmonics): 1 ~ 1023 | |
Range of m (harmonics): 1 ~ 1023 | |
Time Constant | 126 ns ~ 250 s |
Filter Slope (dB/oct) | 6, 12, 18, 24, 30, 36, 42, 48 |
Other Filter Functions | Sinc filter |
Phase Resolution | 10 udeg |
Frequency Resolution | 1 μHz |
Auxiliary Output
Channels | 4 |
Output Voltage Range | ±10 V |
Maximum Output Current | 10 mA |
Reference Output
Channel | 1 |
Frequency Range | 200 uHz ~ 1 MHz |
Output Voltage Range | ±10 mV,±100 mV,±1 V,±10 V |
Signal Type | Sine/TTL |
Output Phase Range | ±180° |
Maximum Output Current | 100 mA |
Reference Input (Can be set to 2 auxiliary inputs)
Channels | 2 |
Frequency Range | DC ~ 1 MHz |
Signal Type | Sine/TTL |
Input Voltage Range | ±10 V |
Auxiliary Input
Channels | 2 |
Input Voltage Range | ±10 V |
Communication
Communication Interface | LAN/1 Gbps |
