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Adobe Portable Document Format - 7.97 kB - 06/08/2020 at 22:33 |
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Adobe Portable Document Format - 11.00 kB - 06/08/2020 at 22:31 |
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Adobe Portable Document Format - 7.87 kB - 06/08/2020 at 22:30 |
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LockIn_Control.inoArduino code for the Teensy 3.1/3.2 to configure and control the ADA2200.ino - 9.36 kB - 07/07/2018 at 23:15 |
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LI_Support.pdfScematics of the op amp circuits for the experimental signal path. These were built on a solderless breadboard.Adobe Portable Document Format - 53.57 kB - 06/11/2018 at 22:14 |
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lab1_intro_phase_shifter.pdfDescribes the all pass filter design.Adobe Portable Document Format - 91.10 kB - 05/30/2018 at 00:50 |
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OpAmp_Schem.pdfSingle Supply Opamp break-out for breadboarding.Adobe Portable Document Format - 16.18 kB - 12/23/2017 at 05:27 |
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LINoise2_Schem.pdfWhite noise source from EDN.Adobe Portable Document Format - 22.48 kB - 12/23/2017 at 05:27 |
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LINoise1_Schem.pdfNBS Pink Noise Source.Adobe Portable Document Format - 29.29 kB - 12/23/2017 at 05:25 |
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LockIn2_Schem.pdfThe ADA2200 break-out for breadboarding.Adobe Portable Document Format - 46.97 kB - 12/23/2017 at 05:24 |
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LowFreqNoiseDI5436fig1.jpgHere's a quality version of the White Noise Source schematic.JPEG Image - 190.81 kB - 11/26/2017 at 17:23 |
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White-noise-source-flat-from-1Hz-to-100kHz.pdfThe white noise source, from EDN. The 100KHz bandwidth seems adequate for this project.Adobe Portable Document Format - 293.94 kB - 11/26/2017 at 17:21 |
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PinkNoiseGen.pdfThe 1/f, or flicker noise, source from NIST (nee National Bureau of Standards).Adobe Portable Document Format - 71.27 kB - 11/26/2017 at 17:17 |
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ADA2200.pdfData sheet for the part I will use. This basically IS the lock in amplifier. Everything else can be considered support circuitry.Adobe Portable Document Format - 636.92 kB - 10/24/2017 at 01:04 |
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ADA2200-EVALZ_UG-702.pdfDescription of the Evaluation Board that Analog Devices sells for this part. I intend to shamelessly copy from this to build test circuits.Adobe Portable Document Format - 326.47 kB - 10/24/2017 at 01:04 |
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lock_in_amplifier.pdfThis a nice Apps Note from Analog Devices that explains how the Lock In Amp works and shows some alternative circuits.Adobe Portable Document Format - 218.60 kB - 10/24/2017 at 01:04 |
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ADA2200 Lock-In Amplifier
This project will attempt to explore and explain the use of the Analog Devices ADA2200 to build Lock-in Amplifiers.