Dac circ
About the Dac circ PCB
Dac circ is an open source PCB design by b3dag, published on GitHub. It is a 2-layer board measuring 193 × 160 mm, with 149 components from 35 distinct parts.
Other key parts include the 74HC04, 74HC11, 74HC164, 74HCT574 and NE5532. By type, the board carries 82 resistors, 31 capacitors, 17 ICs, 8 diodes, 5 connectors and 1 transistor.
Main components on the Dac circ
Dac circ bill of materials (BOM)
149 components, 35 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 74HC04 | DIP-14_W7.62mm | U1 |
| 1 | 74HC11 | DIP-14_W7.62mm | U2 |
| 5 | 74HC164 | DIP-14_W7.62mm | U3, U4, U5, U6, U7 |
| 4 | 74HCT574 | DIP-20_W7.62mm | U8, U9, U12, U13 |
| 3 | NE5532 | DIP-8_W7.62mm | U10, U11, U14 |
| 1 | L7805 | TO-220-3_Horizontal_TabUp | U15 |
| 1 | L7812 | TO-220-3_Horizontal_TabUp | U16 |
| 1 | L7912 | TO-220-3_Horizontal_TabUp | U17 |
| 1 | BC517 | TO-92L_HandSolder | Q1 |
| 1 | Conn_01x06_Pin i2s | PinHeader_1x06_P2.54mm_Vertical | J1 |
| 1 | Conn_Coaxial R | SolderWire-0.5sqmm_1x02_P4.6mm_D0.9mm_OD2.1mm | J2 |
| 1 | Conn_Coaxial L | SolderWire-0.25sqmm_1x02_P4.5mm_D0.65mm_OD2mm | J3 |
| 1 | CONN_01X01_PIN Conn_01x01_Pin | SolderWire-0.5sqmm_1x01_D0.9mm_OD2.1mm | J4 |
| 1 | CONN_01X02_PIN Conn_01x02_Pin | SolderWire-0.5sqmm_1x02_P4.6mm_D0.9mm_OD2.1mm | J5 |
| 1 | Fuse | Fuseholder_Clip-5x20mm_Littelfuse_111_Lateral_P18.80x5.00mm_D1.17mm_Horizontal | F1 |
| 1 | G5V-2_SPLIT G5V-2_Split | Relay_DPDT_Omron_G5V-2 | K1 |
| 2 | 10K 10k | Potentiometer_Bourns_3296W_Vertical | RV1, RV2 |
| 1 | ~ | TRANSFORMER_FS24-500-C2 | T1 |
| 2 | 1N4007 | D_A-405_P7.62mm_Horizontal | D1, D2 |
| 2 | LED | LED_D5.0mm | D3, D4 |
Show 15 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 4 | 1N4007 | D_DO-41_SOD81_P10.16mm_Horizontal | D5, D6, D7, D8 |
| 2 | 2.2UF 2.2uF | C_Radial_D5.0mm_H11.0mm_P2.00mm | C1, C4 |
| 4 | 1NF 1nF | C_Disc_D5.0mm_W2.5mm_P5.00mm | C2, C3, C5, C6 |
| 17 | 100NF 100nf | C_Disc_D5.0mm_W2.5mm_P5.00mm | C7, C8, C9, C10, C11, C12, C13, C14 +9 |
| 2 | 10UF 10uf | C_Radial_D5.0mm_H11.0mm_P2.00mm | C18, C19 |
| 4 | 330UF 330uF | CP_Radial_D12.5mm_P5.00mm | C26, C27, C28, C29 |
| 2 | 2200UF 2200uF | CP_Radial_D12.5mm_P5.00mm | C30, C31 |
| 34 | 20K 20k | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R1, R2, R3, R4, R5, R6, R7, R8 +26 |
| 32 | 10K 10k | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R18, R19, R20, R21, R22, R23, R24, R25 +24 |
| 4 | 8.2K 8.2k | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R65, R66, R71, R72 |
| 3 | 47K 47k | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R67, R70, R75 |
| 2 | 5.9K 5.9k | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R69, R74 |
| 2 | 100R 100r | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R76, R78 |
| 2 | 330R 330r | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R77, R79 |
| 3 | 1k | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R80, R81, R82 |
Dac circ design files
The KiCad project lives in the b3dag/r2r-DAC repository on GitHub; these links point at the commit this page was built from.
Dac circ: common questions
How big is the Dac circ PCB?
The Dac circ measures 193 × 160 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Dac circ?
149 components, from 35 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.
Where can I download the Dac circ design files?
From the b3dag/r2r-DAC repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.
Can I use the Dac circ design in my own project?
The repository has no license, so all rights stay with b3dag. Use it as a reference, and ask the author before reusing the design.
