FreeDSP-CLASSIC-SMD-B
About the FreeDSP-CLASSIC-SMD-B PCB
FreeDSP-CLASSIC-SMD-B is an open source PCB design by freeDSP, published on GitHub under the CC-BY-SA-4.0 license. It is a 2-layer board measuring 67.3 × 92.3 mm, with 170 components from 58 distinct parts.
Other key parts include the ADAU1701, 24AA256SN, LME49721, SN74LVC3G14 and LM393. By type, the board carries 52 capacitors, 48 resistors, 20 connectors, 18 transistors, 11 diodes and 7 ICs.
From the project
SMD update of freeDSP CLASSIC.
LICENCE: Creative Commons Attribution Share-Alike 4.0 license
The freeDSP is an open-source digital signal processor family for the do-it-yourself community. The applications range from active loudspeaker concepts (digital crossovers, bass enhancement, ...) and room equalization over advanced musical effect processors to car audio signal processing.
This freeDSP Classic SMD-B is a updated SMD version of the original freeDSP Classic with a few improvements/changes. This board has been designed using the Cross-Platform Open Source Tool KiCad.
Main components on the FreeDSP-CLASSIC-SMD-B
FreeDSP-CLASSIC-SMD-B bill of materials (BOM)
170 components, 58 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | ADAU1701 | LQFP-48_7x7mm_Pitch0.5mm | U1 |
| 1 | 24AA256SN | SOIC-8_3.9x4.9mm_Pitch1.27mm | U2 |
| 2 | LME49721 | SOIC-8_3.9x4.9mm_Pitch1.27mm | U3, U4 |
| 1 | SN74LVC3G14 | DCT | U5 |
| 1 | LM393 | SOIC-8_3.9x4.9mm_Pitch1.27mm | U6 |
| 1 | IDT2305NZ | SOIC-8_3.9x4.9mm_Pitch1.27mm | U7 |
| 5 | BSS123 | SOT-23_Handsoldering | Q1, Q2, Q3, Q4, Q18 |
| 1 | FZT751TA | SOT-223 | Q5 |
| 8 | BSH103,215 | SOT-23_Handsoldering | Q6, Q7, Q8, Q9, Q10, Q11, Q12, Q13 |
| 4 | MMBF5434 | SOT-23_Handsoldering | Q14, Q15, Q16, Q17 |
| 1 | ASV-24.576MHz-EJ-T | Oscillator_SMD_Abracon_ASV-4pin_7.0x5.1mm_HandSoldering | X1 |
| 6 | RCA_01 | RCA_RCJ-01x | J1, J2, J4, J5, J6, J7 |
| 1 | CONN_01X02 | RIACON101-2 | J3 |
| 1 | CONN_01X06 | Pin_Header_Straight_1x06 | P1 |
| 1 | CONN_01X03 | Pin_Header_Straight_1x03 | P2 |
| 1 | CONN_02X05 | IDC_Header_Straight_10pins | P3 |
| 4 | STDCONN | IDC_Header_Straight_16pins | P4, P5, P6, P7 |
| 6 | CONN_02X03 | Pin_Header_Straight_2x03 | P8, P9, P10, P11, P12, P13 |
| 2 | x | C_Radial_D5_L11_P2 | C_res1, C_res3 |
| 1 | x | C_1206_HandSoldering | C_res2 |
Show 38 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 220n | C_1206_HandSoldering | Cboot1 |
| 1 | 2u2 | C_1206_HandSoldering | Cin1 |
| 1 | 47u | C_1206_HandSoldering | Cout1 |
| 1 | LM284x | SOT23-6_1.7x3.0mm_Pitch0.95mm | LM1 |
| 1 | 3.32k | R_1206_HandSoldering | Rfb1 |
| 1 | 1.02k | R_1206_HandSoldering | Rfb2 |
| 1 | SW_PUSH | SW_PUSH_6mm | SW1 |
| 4 | B150 | SMA | D1, D2, D3, D5 |
| 1 | P6SMB 27V | SMB | D4 |
| 5 | 1N4148 | SOD-123W | D6, D7, D8, D9, D10 |
| 1 | LED | R_1206_HandSoldering | D11 |
| 2 | 330 | C_0805_HandSoldering | FB1, FB2 |
| 1 | 47u | Choke_SMD_6.0x5.8 | L1 |
| 20 | 100n | C_1206_HandSoldering | C1, C3, C4, C6, C8, C9, C10, C11 +12 |
| 11 | 10u | C_Radial_D5_L11_P2 | C2, C5, C7, C14, C32, C33, C34, C35 +3 |
| 3 | 10u | C_1206_HandSoldering | C12, C15, C54 |
| 1 | 3n3 | C_1206_HandSoldering | C18 |
| 1 | 56n | C_1206_HandSoldering | C19 |
| 4 | 100p | C_1206_HandSoldering | C20, C21, C22, C23 |
| 4 | 330p | C_1206_HandSoldering | C24, C25, C26, C27 |
| 4 | 5.6n | C_1206_HandSoldering | C28, C29, C30, C31 |
| 2 | 47u | C_Radial_D5_L11_P2 | C38, C39 |
| 1 | 10n | C_1206_HandSoldering | C46 |
| 1 | 2.2u | C_Radial_D5_L11_P2 | C49 |
| 10 | 10K | R_1206_HandSoldering | R1, R2, R3, R4, R5, R7, R9, R10 +2 |
| 4 | 1K | R_1206_HandSoldering | R6, R36, R41, R42 |
| 3 | 18K | R_1206_HandSoldering | R8, R32, R35 |
| 1 | 475 | R_1206_HandSoldering | R11 |
| 4 | 2k | R_1206_HandSoldering | R12, R13, R14, R15 |
| 4 | 16k | R_1206_HandSoldering | R16, R17, R18, R19 |
| 5 | 330 | R_1206_HandSoldering | R20, R21, R22, R23, R48 |
| 6 | 49k9 | R_1206_HandSoldering | R24, R25, R26, R27, R28, R29 |
| 2 | 7k | R_1206_HandSoldering | R30, R33 |
| 2 | 8k | R_1206_HandSoldering | R31, R34 |
| 1 | 390k | R_1206_HandSoldering | R37 |
| 1 | 1M | R_1206_HandSoldering | R40 |
| 1 | 470k | R_1206_HandSoldering | R43 |
| 4 | 24 | R_1206_HandSoldering | R44, R45, R46, R47 |
FreeDSP-CLASSIC-SMD-B design files
The KiCad project lives in the freeDSP/freeDSP-CLASSIC-SMD-B repository on GitHub; these links point at the commit this page was built from.
FreeDSP-CLASSIC-SMD-B: common questions
How big is the FreeDSP-CLASSIC-SMD-B PCB?
The FreeDSP-CLASSIC-SMD-B measures 67.3 × 92.3 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the FreeDSP-CLASSIC-SMD-B?
170 components, from 58 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 FreeDSP-CLASSIC-SMD-B design files?
From the freeDSP/freeDSP-CLASSIC-SMD-B repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.
Can I use the FreeDSP-CLASSIC-SMD-B design in my own project?
Yes, under the terms of its CC-BY-SA-4.0 license, which freeDSP chose for the repository.