Lock-in Amplifiers and How to Select/Compare

Lock-in amplifiers and how to select/compare. Lock-in amplifiers are powerful tools used in various industries to measure small signals in noisy environments. Lock-in amplifiers excel at extracting weak signals—often in the µV or nV range—that are buried under layers of noise, making them indispensable for applications requiring high sensitivity. If you're exploring lock-in amplifiers, you're likely either delving into how they work or searching for the right one to meet your specific needs. To help you get started, Product Marketer Nadia Dugan shares what lock-in amplifiers are available, and offers insights into key considerations like noise management, accuracy, and reducing cross-talk and capacitance. By the end, you'll have a clearer understanding of how to select the ideal lock-in amplifier for your application. ► Presentation Slides and Comparison Sheet: https://hubs.li/Q02TvCm00 Resources about Lock-in Amplifiers ► How to Choose a Lock-in Amplifier: https://hubs.li/Q02TvXBz0 ► Seamless Autoranging Using Dual-Active Simultaneous Ranges: https://hubs.li/Q02TvMnX0 _________________________________________________ 00:00 An introduction to lock-in amplifiers 02:50 Overview of the M81-SSM 05:44 Comparison of available lock-in amplifiers 08:03 How does a lock-in amplifier work? 09:22 Lock-in amplifier filters, IIR vs FIR 10:53 Equivalent noise bandwidth (ENBW) 11:42 Lock-in noise analysis 13:05 Lock-in noise calculations 16:34 Noise vs resistance with the M81-SSM at 1 kHz 17:58 Noise vs resistance at 1 kHz with other lock-in amplifiers 19:02 Noise vs resistance at 10 Hz with the M81-SSM 19:32 Noise vs resistance at 10 Hz with other lock-in amplifiers 20:36 Voltage noise density 21:17 Noise vs resistance at 1 kHz and 10 Hz 22:10 Capacitance effects 24:42 Noise, capacitance, cross-talk effects 26:16 Accuracy and temperature coefficient considerations 29:03 Single-ended vs differential 30:19 Key considerations when selecting a lock-in amplifier _________________________________________________ Lake Shore Cryotronics M81-SSM product page: https://www.lakeshore.com/M81 Lake Shore Cryotronics on LinkedIn:   / mycompany