4 layers121 × 40 mm
PowerAmplifier
BlockWorker/ModularAudio
Compact, modular, versatile, hi-fi audio system concept.
156 parts2
4 layers40 × 40 mm
DigitalAudioProcessor
BlockWorker/ModularAudio2Compact, modular, versatile, hi-fi audio system concept.
- Size
- 40 × 40 mm
- Copper layers
- 4
- Thickness
- 1.61 mm
- Parts
- 67
- Nets
- 67
- Pads
- 236
- Tracks, vias
- 322, 131
- Pours
- 190
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 11 Jul 2024
- Updated
- 26 Sep 2025
Overview
DigitalAudioProcessor is an open-source printed circuit board by BlockWorker, from the BlockWorker/ModularAudio repository on GitHub. It is a 4-layer board of 40 × 40 mm with 67 parts on 67 nets, routed with 322 tracks and 131 vias.
It is built around the USBLC6-2SC6. Its parts include 22 capacitors, 15 resistors, 8 connectors, 3 ICs and 1 inductor. It belongs with the audio and music boards and the STM32 boards of this library.
Main components
1Parts
67| Qty | Value | Footprint | References |
|---|---|---|---|
| 12 | 0.1µF | Capacitor_SMD:C_0603_1608Metric | C3, C4, C7, C8, C9, C10, C11, C13, C15, C19, C20, C21 |
| 8 | 27Ω | Resistor_SMD:R_0603_1608Metric | R4, R5, R7, R8, R10, R11, R13, R14 |
| 4 | 10Ω | Resistor_SMD:R_0603_1608Metric | R3, R6, R9, R12 |
| 3 | 10µF 25V | Capacitor_SMD:C_0805_2012Metric | C6, C16, C17 |
| 2 | 1µF | Capacitor_SMD:C_0603_1608Metric | C1, C5 |
| 2 | 4.7µF | Capacitor_SMD:C_0603_1608Metric | C2, C12 |
| 1 | 0Ω | Resistor_SMD:R_0603_1608Metric | R2 |
| 1 | 10kΩ | Resistor_SMD:R_0603_1608Metric | R1 |
| 1 | 1kΩ | Resistor_SMD:R_0603_1608Metric | R15 |
| 1 | 2.2µH | Inductor_SMD:L_0805_2012Metric | L1 |
| 1 | 220pF | Capacitor_SMD:C_0603_1608Metric | C18 |
| 1 | 220µF 6.3V | Capacitor_SMD:CP_Elec_5x5.8 | C22 |
| 1 | 3.3V | BW_Connectors:Amphenol_MINITEK_WTB_1.25_2P | J8 |
| 1 | 30pF | Capacitor_SMD:C_0603_1608Metric | C14 |
| 1 | I2C | BW_Connectors:Amphenol_MINITEK_WTB_1.25_4P | J6 |
| 1 | I2C_~{INT} | BW_PassiveMechanical:TP_0603_1608Metric_Fused | TP11 |
| 1 | I2S_1 | BW_Connectors:Amphenol_MINITEK_WTB_1.25_4P | J3 |
| 1 | I2S_1_BCK | BW_PassiveMechanical:TP_0603_1608Metric_Fused | TP4 |
| 1 | I2S_1_DATA | BW_PassiveMechanical:TP_0603_1608Metric_Fused | TP5 |
| 1 | I2S_1_LRCK | BW_PassiveMechanical:TP_0603_1608Metric_Fused | TP6 |
| 1 | I2S_2 | BW_Connectors:Amphenol_MINITEK_WTB_1.25_4P | J7 |
| 1 | I2S_2_BCK | BW_PassiveMechanical:TP_0603_1608Metric_Fused | TP14 |
| 1 | I2S_2_DATA | BW_PassiveMechanical:TP_0603_1608Metric_Fused | TP15 |
| 1 | I2S_2_LRCK | BW_PassiveMechanical:TP_0603_1608Metric_Fused | TP16 |
| 1 | I2S_3 | BW_Connectors:Amphenol_MINITEK_WTB_1.25_4P | J5 |
| 1 | I2S_3_BCK | BW_PassiveMechanical:TP_0603_1608Metric_Fused | TP8 |
| 1 | I2S_3_DATA | BW_PassiveMechanical:TP_0603_1608Metric_Fused | TP9 |
| 1 | I2S_3_LRCK | BW_PassiveMechanical:TP_0603_1608Metric_Fused | TP10 |
| 1 | I2S_OUT | BW_Connectors:Amphenol_MINITEK_WTB_1.25_5P | J2 |
| 1 | I2S_OUT_BCK | BW_PassiveMechanical:TP_0603_1608Metric_Fused | TP1 |
| 1 | I2S_OUT_DATA | BW_PassiveMechanical:TP_0603_1608Metric_Fused | TP2 |
| 1 | I2S_OUT_LRCK | BW_PassiveMechanical:TP_0603_1608Metric_Fused | TP3 |
| 1 | SPDIF_IN | BW_PassiveMechanical:TP_0603_1608Metric_Fused | TP7 |
| 1 | STM32H725RGVx | Package_DFN_QFN:QFN-68-1EP_8x8mm_P0.4mm_EP6.4x6.4mm | U3 |
| 1 | SWD | Connector_PinSocket_1.27mm:PinSocket_1x05_P1.27mm_Vertical_SMD_Pin1Right | J1 |
| 1 | Shunt? | Inductor_SMD:L_0603_1608Metric | FB1 |
| 1 | TOSLINK_RX | BW_Active:DLR2180 | U1 |
| 1 | UART_RX | BW_PassiveMechanical:TP_0603_1608Metric_Fused | TP12 |
| 1 | UART_TX | BW_PassiveMechanical:TP_0603_1608Metric_Fused | TP13 |
| 1 | USB | BW_Connectors:Amphenol_MINITEK_WTB_1.25_4P | J4 |
| 1 | USBLC6-2SC6 | Package_TO_SOT_SMD:SOT-23-6 | U2 |
The 66 most common of 67 parts.
Questions
How big is the DigitalAudioProcessor PCB?
It measures 40 × 40 mm and has 4 copper layers, 1.61 mm thick.
What parts does the DigitalAudioProcessor use?
67 parts, built around the USBLC6-2SC6. 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 DigitalAudioProcessor KiCad files?
From the BlockWorker/ModularAudio repository on GitHub, at the commit this page was made from: the board is DigitalAudioProcessor/DigitalAudioProcessor.kicad_pcb and its schematic 12VLDO/12VLDO.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the DigitalAudioProcessor design in my own project?
Its repository states no licence, so its author keeps all rights: ask BlockWorker before reusing the design.
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