
Usb headphone amp
embediver/usb-headphone-amp
USB Headphone Amplifier based on RP2040, PCM5102A and NE5532.

GTB is an open-source printed circuit board by nahidalam, from the nahidalam/KiCad-projects repository on GitHub. It is a 2-layer board with 47 parts on 33 nets.
It is built around the TPS76933DBV. Its parts include 20 capacitors, 15 resistors, 4 ICs, 2 diodes and 2 switches.
| Qty | Value | Footprint | References |
|---|---|---|---|
| 5 | 100N | SM1206 | C3, C5, C6, C8, C11 |
| 4 | C | SM1206 | C14, C16, C17, C19 |
| 3 | 0 | SM1206 | R3, R10, R13 |
| 3 | 1U | SM1206 | C2, C7, C18 |
| 2 | 2.2K | SM1206 | R4, R5 |
| 2 | 270 | SM1206 | R11, R12 |
| 2 | 27P | SM1206 | C9, C12 |
| 2 | 33 | SM1206 | R6, R7 |
| 2 | LED | LED-1206 | D1, D2 |
| 2 | R | SM1206 | R8, R15 |
| 2 | SW_PUSH | SW_PUSH_SMALL | SW1, SW2 |
| 1 | 0.1U | SM1206 | C15 |
| 1 | 10P | SM1206 | C1 |
| 1 | 1K5 | SM1206 | R9 |
| 1 | 1N | SM1206 | C4 |
| 1 | 2 | SM1206 | R14 |
| 1 | 220P | SM1206 | C10 |
| 1 | 2K2 | SM1206 | R1 |
| 1 | 2U | SM1206 | C13 |
| 1 | 4U7 | SM1206 | C20 |
| 1 | 56K | SM1206 | R2 |
| 1 | 6N8 | SM1206 | L1 |
| 1 | APPLE-CP | SSOP8 | U2 |
| 1 | APPLE-LIGHTNING-C10/C11 | Lightning-C11-B | U3 |
| 1 | BALUN | JTI_2450BM15A0002 | T1 |
| 1 | CC2531 | RHA40_4P5X4P5 | U1 |
| 1 | CRYSTAL | SM0603 | X1 |
| 1 | INDUCTOR | SM1206 | L2 |
| 1 | TPS76933 | SOT23-5 | U4 |
47 parts, built around the TPS76933DBV. 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.
From the nahidalam/KiCad-projects repository on GitHub, at the commit this page was made from: the board is orig/GTB.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Its repository states no licence, so its author keeps all rights: ask nahidalam before reusing the design.

embediver/usb-headphone-amp
USB Headphone Amplifier based on RP2040, PCM5102A and NE5532.

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