2 layers24.4 × 24.4 mm
OSO SWAT B1
joeycastillo/Sensor-Watch
A board replacement for the classic Casio F-91W wristwatch
39 parts2.1k
2 layers47 × 22.9 mm
A board design with example code for data acquisition with 14-, 16-, or 18-bit resolution at 100 up to 1000 kSPS
- Size
- 47 × 22.9 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 39
- Nets
- 21
- Pads
- 107
- Tracks, vias
- 253, 39
- Pours
- 3
- Routed
- Yes
- KiCad
- KiCad 3
- Created
- 19 Jan 2015
- Updated
- 20 Jan 2015
Overview
AD7685 v2 is an open-source printed circuit board by ElectronicsOpenSource, from the ElectronicsOpenSource/Low-frequency-data-acquisition repository on GitHub. It is a 2-layer board of 47 × 22.9 mm with 39 parts on 21 nets, routed with 253 tracks and 39 vias.
Its parts include 13 capacitors, 6 ICs and 4 resistors.
README
README.mdLow-frequency-data-acquisition
A board design with example code for data acquisition with 14-, 16-, or 18-bit resolution at 100 up to 1000 kSPS
For more information visit OSPESA on google groups
https://groups.google.com/forum/#!forum/ospesa
Supported ADCs (to be tested): These are all the ADCs that should be supported. The footprint used is the 10-MSOP. All ADCs are either differential or pseudo-differential (check for your application).
14-bit - 250 kSPS - AD7942 - ~$12 ea.
14-bit - 500 kSPS - AD7946 - ~$16 ea.
16-bit - 100 kSPS - AD7988-1 - ~$17 ea.
16-bit - 250 kSPS - AD7685 - ~$14 ea. <--- I used these for now
16-bit - 250 kSPS - AD7687 - ~$19 ea.
16-bit - 500 kSPS - AD7686 - ~$24 ea.
16-bit - 500 kSPS - AD7688 - ~$29 ea.
16-bit - 500 kSPS - AD7693 - ~$35 ea.
16-bit - 500 kSPS - AD7988-5 - ~$17 ea.
16-bit - 1000 kSPS - AD7980 - ~$23 ea.
16-bit - 1000 kSPS - AD7983 - ~$34 ea.
18-bit - 100 kSPS - AD7989-1 - ~$19 ea.
18-bit - 250 kSPS - AD7691 - ~$28 ea.
18-bit - 500 kSPS - AD7690 - ~$38 ea.
18-bit - 500 kSPS - AD7989-5 - ~$25 ea.
18-bit - 1000 kSPS - AD7982 - ~$41 ea.
18-bit - 1000 kSPS - AD7984 - ~$50 ea
Parts
39| Qty | Value | Footprint | References |
|---|---|---|---|
| 9 | 100n | SM0603_Capa | C1, C3, C5, C6, C7, C8, C10, C12, C13 |
| 6 | CONN_1 | PIN_ARRAY_1 | +2.5V, +5.2V, +12V, R1, R2, Ref |
| 4 | JUMPER | SM0402 | JP1, JP2, JP3, JP4 |
| 3 | 220R | SM0603 | R1, R2, R4 |
| 2 | MSOP10-0.5 | U3, U6 | |
| 2 | TO92 | U1, U2 | |
| 2 | MSOP_8 | U4, U5 | |
| 2 | 10u | SM1206POL | C9, C11 |
| 2 | 1u | SM1206POL | C2, C4 |
| 2 | CONN_1 | 1pin | , |
| 2 | CONN_2 | PIN_ARRAY_2X1 | + -, + - |
| 1 | 768R | SM0603 | R3 |
| 1 | CONN_5 | PIN_ARRAY_5x1 | |
| 1 | CONN_6 | PIN_ARRAY-6X1 |
Questions
How big is the AD7685 v2 PCB?
It measures 47 × 22.9 mm and has 2 copper layers, 1.6 mm thick.
What parts does the AD7685 v2 use?
39 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 AD7685 v2 KiCad files?
From the ElectronicsOpenSource/Low-frequency-data-acquisition repository on GitHub, at the commit this page was made from: the board is v2-board/AD7685_v2.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the AD7685 v2 design in my own project?
Its repository states no licence, so its author keeps all rights: ask ElectronicsOpenSource before reusing the design.
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