High Stability Low Noise Laser Current Driver PCB
- Document #:
- LIGO-D1200719-v7
- Document type:
- D - Drawings
Other Versions:
| LIGO-D1200719-v6
31 Oct 2016, 16:43 |
| LIGO-D1200719-v5
13 Oct 2016, 14:23 |
| LIGO-D1200719-v1
11 May 2012, 16:09 |
- Abstract:
- A printed circuit board and associated schematic for a low noise laboratory quality current source to be used with commercial laser diodes in critical applications
- Files in Document:
-
- PDF of Schematic, BOM and Layout (Laser Diode Driver v7.pdf, 1.0 MB)
- Other Files:
- Altium Project Files (Zipped) (Laser Diode Driver v7.zip, 17.5 MB)
- Bill of Materials in Excel Format (Laser Diode Driver v7.xlsx, 12.9 kB)
- ODB++ Files (Laser Diode DriverODB_v7.zip, 272.3 kB)
- Pick and Place Files in CSV Format (Pick Place for Laser Diode Driver v7.csv, 23.7 kB)
- Zipped gerber files for manufacture (Laser Diode DriverGBR_v7.zip, 92.6 kB)
- ICS/JIRA Record:
-
- ICS_LINK
- Topics:
- Authors:
- Notes and Changes:
- This revision makes the following modifications:
1. Added a protection circuit that limits the output voltage of the driver to the laser diode to 4 V.
2. Changed U9 to LT1128, which lowers the sensing noise for the current set point of the slow path.
3. Changes the topology of the slow bias path to use only a single power N-channel MOSFET for the bias current. This was to prevent the observed bias-dependent cross-ver between the two feedback routes in the slow path, which caused a noise bump at the cross-over frequency.
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