2 layers227.8 × 48 mm
2 layers97.6 × 48 mm
Divider2
Hackuarium/ion-mobility11DIY Ion mobility spectrometer
- Size
- 97.6 × 48 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 56
- Nets
- 28
- Pads
- 83
- Tracks, vias
- 84, 0
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 4 Apr 2019
- Updated
- 9 Jun 2023
Overview
Divider2 is an open-source printed circuit board by Hackuarium, from the Hackuarium/ion-mobility repository on GitHub. It is a 2-layer board of 97.6 × 48 mm with 56 parts on 28 nets, routed with 84 tracks and 0 vias.
Its parts include 27 resistors and 2 connectors.
README
PCB/Ampli/README.mdAmplification stage
Description
Amplification stage to transform the small current on the target to an acceptable voltage to be read/processed.
Transimpedance circuit with a big gain (10^8) and a voltage follower through a dual precision operationnal amplifier (Texas Instruments LMC6082).
Specifications and limitations
The circuit needs to be as close as possible to the target of the IMS in order to limit the noise present on the signal. One possibility is to solder the PCB directly on the back of the target.
Possible amplification of the noise must be taken into account, and possibly filtered through a very small capacitor (~0.01 pF, thus quite expensive) in the gain stage feedback loop (a bigger resistor amplifies the signal but also the noise).
PCB
Below is a picture of the mounted PCB, currently missing the connectors and a potential filtering capacitor C1.
Parts
56| Qty | Value | Footprint | References |
|---|---|---|---|
| 27 | 10M | Resistor_SMD:R_1206_3216Metric | R1, R2, R10, R11, R12, R13, R14, R15, R16, R17, R18, R19, R20, R21, R22, R23 +11 |
| 27 | Electr. | Connector:Pad_for_electrode | E1, E2, E10, E11, E12, E13, E14, E15, E16, E17, E18, E19, E20, E21, E22, E23 +11 |
| 1 | PWR out | Connector_Pin:Pin_D1.0mm_L10.0mm | J2 |
| 1 | Pwr In | Connector_Pin:Pin_D1.0mm_L10.0mm | J1 |
Questions
How big is the Divider2 PCB?
It measures 97.6 × 48 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Divider2 use?
56 parts. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the Divider2 KiCad files?
From the Hackuarium/ion-mobility repository on GitHub, at the commit this page was made from: the board is PCB/Divider/Complete_divider/Divider2.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Divider2 design in my own project?
Its repository states no licence, so its author keeps all rights: ask Hackuarium before reusing the design.
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