AmplifierBoard
About the AmplifierBoard PCB
AmplifierBoard is an open source AVR/Arduino PCB design by dangrie158, published on GitHub under the MIT license. It is a 2-layer board measuring 210 × 104 mm, with 225 components from 72 distinct parts.
Its main chip is the ATMEGA328PB-A, from the AVR/Arduino family. Other key parts include the TPA3251, L7812, L7805, LM2576S-12 and PCM1793. By type, the board carries 102 capacitors, 56 resistors, 21 inductors, 18 ICs, 9 connectors and 6 jumpers.
It belongs with the audio designs in this gallery.
From the project
A Class D audio amplifier in a n old Teufel Decoder Station 5 case
This project aims to repurpose an old Teufel Decoder Station Case by building a Class D amplifier inside it.
The old Teufel Decoder Station Case has been transformed into a powerful Class D amplifier in this project.
- Compact design that fits perfectly into the Teufel Decoder Station Case - High-efficiency Class D amplifier technology - Excellent audio quality with low distortion - Multiple input options for versatile connectivity - Built-in protection circuitry for safe operation
Main components on the AmplifierBoard
AmplifierBoard bill of materials (BOM)
225 components, 72 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | TPA3251 | HTSSOP-44_6.1x14mm_P0.635mm_TopEP4.14x7.01mm | U1 |
| 1 | L7812 | TO-220-3_Vertical | U2 |
| 1 | L7805 | TO-220-3_Vertical | U3 |
| 1 | LM2576S-12 | TO-263-5_TabPin3 | U4 |
| 1 | PCM1793 | SSOP-28_5.3x10.2mm_P0.65mm | U5 |
| 1 | WM8804 | SSOP-20_5.3x7.2mm_P0.65mm | U6 |
| 4 | LM833 | SOIC-8_5.23x5.23mm_P1.27mm | U7, U11, U13, U15 |
| 1 | MIC811TUY | SOT-143 | U8 |
| 1 | L7905 | TO-220-3_Vertical | U9 |
| 1 | LM1117MP-3.3 | SOT-223-3_TabPin2 | U10 |
| 1 | PT2258 | SO-20_12.8x7.5mm_P1.27mm | U12 |
| 1 | L7809 | TO-220-3_Vertical | U14 |
| 1 | LM358 | SOIC-8_5.23x5.23mm_P1.27mm | U16 |
| 1 | 74HC14 | SOIC-14_3.9x8.7mm_P1.27mm | U17 |
| 1 | ATMEGA328PB-A ATmega328PB-A | TQFP-32_7x7mm_P0.8mm | U18 |
| 1 | 12MHZ 12MHz | Crystal_SMD_3225-4Pin_3.2x2.5mm_HandSoldering | Y1 |
| 1 | 12-20V | BarrelJack_CLIFF_FC681465S_SMT_Horizontal | J1 |
| 1 | Digital | FCR684205R | J2 |
| 1 | AUX1 | RCJ-2223 | J3 |
| 1 | AUX2 | RCJ-2223 | J4 |
Show 52 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | CHANNEL A | PhoenixContact_MSTBVA_2,5_2-G_1x02_P5.00mm_Vertical | J5 |
| 1 | CHANNEL B | PhoenixContact_MSTBVA_2,5_2-G_1x02_P5.00mm_Vertical | J6 |
| 1 | Frontpanel | PCB-C-20-T-SMT | J7 |
| 1 | ICSP | IDC-Header_2x03_P2.54mm_Vertical | J8 |
| 1 | Serial Debug | PinHeader_1x03_P2.54mm_Vertical | J9 |
| 4 | ~ | 3.2mm Hole Oblong | H1, H2, H3, H4 |
| 1 | Heatsink | ATS-CPX045045010-197-C1-R0 | HS1 |
| 2 | Heatsink | ASS_0871_HS | HS2, HS5 |
| 2 | Star Ground | SolderJumper-2_P1.3mm_Bridged2Bar_RoundedPad1.0x1.5mm | JP1, JP6 |
| 4 | Bypass | SolderJumper-2_P1.3mm_Open_RoundedPad1.0x1.5mm | JP2, JP3, JP4, JP5 |
| 2 | 50K 50k | Potentiometer_Bourns_3296W_Vertical | RV1, RV2 |
| 1 | 1N5822 | D_DO-201AD_P15.24mm_Horizontal | D1 |
| 2 | 1N4148 | D_SOD-123 | D2, D3 |
| 4 | 10µH | L_12x12mm_H4.5mm | L1, L2, L3, L4 |
| 1 | 68µH | L_12x12mm_H4.5mm | L5 |
| 16 | C1046 10µH | L_0805_2012Metric_Pad1.15x1.40mm_HandSolder | L6, L7, L8, L9, L10, L11, L12, L13 +8 |
| 4 | C28323 1µF 50V | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C1, C2, C4, C5 |
| 2 | 470µF 50V | CP_Elec_16x17.5 | C3, C6 |
| 2 | C28323 1µF | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C7, C8 |
| 1 | 10NF 10nF | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C9 |
| 33 | 100NF 100nF | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C10, C35, C36, C37, C38, C49, C50, C52 +25 |
| 1 | 470µF 16V | CP_Elec_10x10.5 | C11 |
| 2 | 100NF 100n | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C12, C13 |
| 1 | 100NF 100nF 16V | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C14 |
| 4 | 33NF 33nF | C_Rect_L7.2mm_W2.5mm_P5.00mm_FKS2_FKP2_MKS2_MKP2 | C15, C16, C23, C24 |
| 4 | 1µ | C_Rect_L10.3mm_W5.0mm_P7.50mm_MKS4 | C17, C18, C25, C26 |
| 4 | 1n | C_Rect_L7.2mm_W2.5mm_P5.00mm_FKS2_FKP2_MKS2_MKP2 | C19, C20, C27, C28 |
| 4 | 10N 10n | C_Rect_L7.2mm_W2.5mm_P5.00mm_FKS2_FKP2_MKS2_MKP2 | C21, C22, C29, C30 |
| 10 | 10µF | CP_Elec_4x5.4 | C31, C32, C33, C34, C65, C71, C74, C75 +2 |
| 2 | 100µF 50V | CP_Elec_8x10 | C39, C98 |
| 1 | C12891 22µF | C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C40 |
| 2 | 1800PF 1800pF | C_Rect_L7.2mm_W2.5mm_P5.00mm_FKS2_FKP2_MKS2_MKP2 | C41, C45 |
| 4 | 470PF 470pF | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C42, C43, C46, C47 |
| 1 | C28323 1µ | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C44 |
| 10 | 10µF | CP_EIA-3216-18_Kemet-A_Pad1.58x1.35mm_HandSolder | C48, C51, C57, C59, C76, C79, C82, C86 +2 |
| 2 | 18PF 18pF | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C53, C54 |
| 1 | C7171 10µF | CP_EIA-3216-18_Kemet-A_Pad1.58x1.35mm_HandSolder | C83 |
| 4 | 100PF 100pF | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C93, C94, C95, C96 |
| 1 | 30PF 30pF | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C97 |
| 2 | 10µF | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C101, C102 |
| 4 | 4K7 4k7 | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R1, R2, R55, R56 |
| 4 | 3R3 | R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R3, R4, R5, R6 |
| 1 | 22K 27k | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R7 |
| 7 | 10K 10k | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R8, R25, R26, R27, R28, R29, R44 |
| 4 | 1.8K 1.8k | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R9, R10, R15, R16 |
| 4 | 680 | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R11, R12, R19, R20 |
| 4 | 3K3 3k3 | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R13, R14, R17, R18 |
| 4 | 22 | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R21, R22, R23, R24 |
| 14 | 100K 100k | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R30, R31, R32, R33, R34, R35, R36, R37 +6 |
| 2 | 10K 0 | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R42, R45 |
| 2 | 10k | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R43, R46 |
| 6 | 1k | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R47, R48, R49, R50, R51, R52 |
AmplifierBoard design files
The KiCad project lives in the dangrie158/AmpStation repository on GitHub; these links point at the commit this page was built from.
AmplifierBoard: common questions
What microcontroller does the AmplifierBoard use?
The AmplifierBoard is built around the ATMEGA328PB-A, from the AVR/Arduino family.
How big is the AmplifierBoard PCB?
The AmplifierBoard measures 210 × 104 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the AmplifierBoard?
225 components, from 72 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 AmplifierBoard design files?
From the dangrie158/AmpStation 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 AmplifierBoard design in my own project?
Yes, under the terms of its MIT license, which dangrie158 chose for the repository.
Can I test firmware for the AmplifierBoard without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug AVR/Arduino firmware against it before you order a PCB.
More boards in AmpStation
Similar boards
AVR/ArduinoMagspoof
samyk
35 × 29 mm11 parts2LNo license4.2k
AVR/ArduinoRedox keyboard
mattdibi
162.2 × 126.5 mm77 parts2LMIT2.0k
AVR/ArduinoLabrador
espotek-org
36.8 × 34.7 mm75 parts2LNo license1.2k
AVR/ArduinoV4
stuartpittaway
30 × 50 mm38 parts2LCC-BY-NC-4.01.1k
AVR/ArduinoModuleV450
30 × 61.4 mm39 parts2LCC-BY-NC-4.01.1k
AVR/ArduinoDiscipline
coseyfannitutti
304.9 × 122.8 mm170 parts2LCC-BY-NC-4.01.0k