Demo Board
About the Demo Board
Demo Board is an open source PCB design by will-fritz, published on GitHub under the GPL-3.0 license. It is a 4-layer board measuring 71.2 × 52.2 mm, with 31 components from 18 distinct parts.
Other key parts include the LMQ66430R5RXBR and TPS22917DBVR. By type, the board carries 13 capacitors, 7 resistors, 4 connectors, 3 ICs, 2 diodes and 2 inductors.
From the project
4 ch microphone board to replace seed studio 6 ch microphone board stack
Main components on the Demo Board
Demo Board bill of materials (BOM)
31 components, 18 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | LMQ66430R5RXBR Texas Instruments | VQFN-FCRLF14_RXB_TEX | U1 |
| 2 | TPS22917DBVR TPS22917DBVx Texas Instruments | SOT-23-6 | U2, U3 |
| 1 | 436500200 micro-fit_1x2_3mm Molex | Molex_Micro-Fit_3.0_43650-0200_1x02_P3.00mm_Horizontal | J1 |
| 1 | 430450400 micro-fit_2x2_3mm Molex | Molex_Micro-Fit_3.0_43045-0400_2x02_P3.00mm_Horizontal | J2 |
| 2 | 048406-0001 molex_048406-0001 Molex | USB3_A_Molex_48406-0001_Horizontal_Stacked | J3, J4 |
| 2 | 1N4148W-13-F 1N4148W Diodes Incorporated | D_SOD-123 | D1, D2 |
| 1 | LSMGA322525T102NG 1k @100MHz 2A Taiyo Yuden | L_1210_3225Metric | FB1 |
| 1 | XGL4030-332MEC 3u3 5A Coilcraft | L_Coilcraft_XxL4030 | L1 |
| 2 | CL32B106KBJNNNE 10u 50V Samsung Electro-Mechanics | C_1210_3225Metric | C1, C2 |
| 1 | GRM188R72A104KA35D 100n 50v Murata Electronics | C_0603_1608Metric | C3 |
| 5 | GRT188R61H105KE13D 1u 50V Murata Electronics | C_0603_1608Metric | C4, C8, C10, C11, C13 |
| 2 | CL31B226MPHNNNE 22u 10v Samsung Electro-Mechanics | C_1206_3216Metric | C5, C6 |
| 1 | GRM188R72A104KA35D 100n 25v Murata Electronics | C_0603_1608Metric | C7 |
| 2 | CL10C471JB81PNL 470p Samsung Electro-Mechanics | C_0603_1608Metric | C9, C12 |
| 3 | RMCF0603FT1M00 1M Stackpole Electronics Inc | R_0603_1608Metric | R1, R4, R6 |
| 1 | RC0603JR-070RL 0R YAGEO | R_0603_1608Metric | R2 |
| 1 | Do not purchase or place DNF Do not purchase or place | R_0603_1608Metric | R3 |
| 2 | RMCF0603FT10K0 10k Stackpole Electronics Inc | R_0603_1608Metric | R5, R7 |
Demo Board design files
The KiCad project lives in the will-fritz/4-ch-mic-board repository on GitHub; these links point at the commit this page was built from.
Demo Board: common questions
How big is the Demo Board?
The Demo Board measures 71.2 × 52.2 mm, has 4 copper layers and is 1.6 mm thick.
How many components are on the Demo Board?
31 components, from 18 distinct parts. The full bill of materials is listed on this page.
Where can I download the Demo Board design files?
From the will-fritz/4-ch-mic-board repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the Demo Board design in my own project?
Yes, under the terms of its GPL-3.0 license, which will-fritz chose for the repository.
