2 layers208 × 130 mm
2 layers227.8 × 48 mm
DividerV2
Hackuarium/ion-mobility11DIY Ion mobility spectrometer
- Size
- 227.8 × 48 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 100
- Nets
- 68
- Pads
- 170
- Tracks, vias
- 110, 0
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 4 Apr 2019
- Updated
- 9 Jun 2023
Overview
DividerV2 is an open-source printed circuit board by Hackuarium, from the Hackuarium/ion-mobility repository on GitHub. It is a 2-layer board of 227.8 × 48 mm with 100 parts on 68 nets, routed with 110 tracks and 0 vias.
It is built around the SFH617A-1. Its parts include 62 resistors, 4 connectors, 3 capacitors and 1 IC.
Main components
1README
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
100| Qty | Value | Footprint | References |
|---|---|---|---|
| 29 | 10M | Resistor_SMD:R_1206_3216Metric_Pad1.42x1.75mm_HandSolder | R1, R2, R10, R11, R12, R13, R14, R15, R16, R17, R18, R19, R20, R21, R22, R23 +13 |
| 29 | 10M | Resistor_SMD:R_1206_3216Metric | R34, R35, R36, R37, R38, R39, R40, R41, R42, R43, R44, R45, R46, R47, R48, R49 +13 |
| 29 | Electr. | Connector:Pad_for_electrode | E1, E2, E10, E11, E12, E13, E14, E15, E16, E17, E18, E19, E20, E21, E22, E23 +13 |
| 3 | 4700pF 10kV | Capacitor_THT:C_Rect_L13.0mm_W8.0mm_P10.00mm_FKS3_FKP3_MKS4 | C1, C2, C3 |
| 2 | 1.5M | Resistor_SMD:R_1206_3216Metric | R31, R33 |
| 2 | 10kV | Connector_Pin:Pin_D1.4mm_L8.5mm_W2.8mm_FlatFork | J2, J4 |
| 1 | 0V | Connector_Pin:Pin_D1.4mm_L8.5mm_W2.8mm_FlatFork | J3 |
| 1 | 100M | Potentiometer_THT:Potentiometer_ACP_CA14-H4_Horizontal | RV1 |
| 1 | 100M | Resistor_SMD:R_1206_3216Metric | R32 |
| 1 | 15kV | Connector_Pin:Pin_D1.4mm_L8.5mm_W2.8mm_FlatFork | J1 |
| 1 | 500K | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P15.24mm_Horizontal | R30 |
| 1 | SFH617A-1 | Package_DIP:DIP-4_W7.62mm | U1 |
Questions
How big is the DividerV2 PCB?
It measures 227.8 × 48 mm and has 2 copper layers, 1.6 mm thick.
What parts does the DividerV2 use?
100 parts, built around the SFH617A-1. 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 DividerV2 KiCad files?
From the Hackuarium/ion-mobility repository on GitHub, at the commit this page was made from: the board is PCB/Divider/DividerV2/DividerV2.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the DividerV2 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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