aLIGO LSC RF Photodetector Schematic

Document #:

LIGO-D1101124-v7

Document type:

D - Drawings

Abstract:

Schematic and PCB files for the general purpose low noise RF photodetector for ISC length sensing. A de-Q'd version is also used in the PSL. See the related documents section (T1200428) for a spreadsheet detailing the component values specific to each application.

Files in Document:

• PDF of Schematic and Layout (aLIGO_LSC_pd_v7.pdf, 567.8 kB)

Other Files:

• Altium Project Files (zipped) (aLIGO_LSC_pd_v7 (2-6-2013 4-41-48 PM).zip, 950.4 kB)
• Bill of materials (aLIGO_LSC_pd_v7_BOM.xlsx, 14.7 kB)
• Gerber files for manufacture of board (lsc_v3.zip, 62.5 kB)
• Solid Works .STEP file (aLIGO_LSC.step, 977.8 kB)

ICS/JIRA Record:

• ICS_LINK

Topics:

• Sensing and Control
• Final Design

Authors:

• Rich Abbott

Keywords:

lsc rfpd

Notes and Changes:

Version 7 - In response to the single supply failure mechanism, the following components were changed: U2 from AD8597 to LT1128, U8 & U10 from AD8675 to OP27, C31 removed to aid stability of LT1128. Reverse biased diodes are added across the main filter caps in the + and - 15VDC rails.

Related Documents:

Referenced by:

• LIGO-E1300114: DCN for component changes to LSC Style RFPD