HardLabs

Simple-Photodiode-Front-End

jproj3cts·Simple-Photodiode-Front-End·KiCad Files/photodiode.kicad_pcb

Simple-Photodiode-Front-End PCB layout, top view — open source board by jproj3cts

About the Simple-Photodiode-Front-End PCB

Simple-Photodiode-Front-End is an open source PCB design by jproj3cts, published on GitHub under the GPL-3.0 license. It is a 2-layer board measuring 21 × 50 mm, with 14 components from 6 distinct parts.

Other key parts include the TC1014-3.3VCT713 and OPT101P-J. By type, the board carries 7 capacitors, 3 resistors, 2 ICs, 1 transistor and 1 connector.

It belongs with the test & measurement and science & space designs in this gallery.

From the project

This project aims to provide a very simple slow (~15KHz) but low noise photodiode front end, for the use in building scientific instrumentation.

The general scheme of this device is shown below. As can be seen, it is formed of three sections: a capacitance multiplier, a 3.3V regulator, and the OPT101 itself. The first two stages function to minimise input noise as much as possible, with the capacitance multiplier functioning to almost entirely remove mains ripple. The OPT101 is a monolithic photodiode and single-supply transimpedance amplifier, so conveniently amplifies the photodiode output without requiring an external TIA and biases the device too. The disadvantage of course is that it has a relatively limited bandwidth of ~15KHz…

Simple-Photodiode-Front-End, from the project README
From the project README

Main components on the Simple-Photodiode-Front-End

TC1014-3.3VCT713OPT101P-J

Simple-Photodiode-Front-End bill of materials (BOM)

14 components, 6 distinct parts.

QtyPartRefs
1
TC1014-3.3VCT713
IC1
1
OPT101P-J
IC2
1
PBSS4360PAS-QX
Q1
1
Conn_01x03_Male
J1
7
C
C1, C2, C3, C4, C5, C6, C7
3
R
R1, R2, R3

Simple-Photodiode-Front-End design files

The KiCad project lives in the jproj3cts/Simple-Photodiode-Front-End repository on GitHub; these links point at the commit this page was built from.

Simple-Photodiode-Front-End: common questions

How big is the Simple-Photodiode-Front-End PCB?

The Simple-Photodiode-Front-End measures 21 × 50 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Simple-Photodiode-Front-End?

14 components, from 6 distinct parts. The full bill of materials is listed on this page.

Where can I download the Simple-Photodiode-Front-End design files?

From the jproj3cts/Simple-Photodiode-Front-End repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Simple-Photodiode-Front-End design in my own project?

Yes, under the terms of its GPL-3.0 license, which jproj3cts chose for the repository.

Similar boards