AmplifierHat
About the AmplifierHat PCB
AmplifierHat is an open source FPGA PCB design by RasmusStagsted, published on GitHub. It is a 4-layer board measuring 150 × 75 mm, with 179 components from 43 distinct parts.
Its main chip is the TPA3250, from the FPGA family. Other key parts include the PCM1792A, TMR1222, TMR1211 and OPA1612AXD. By type, the board carries 72 resistors, 70 capacitors, 16 test points, 8 ICs, 7 connectors and 4 inductors.
It belongs with the usb & debug tools and audio designs in this gallery.
From the project
KiCad files of a custom made FPGA board powered by Artix 7 (xc7a100t-1fgg484)
2. Generate gerber files and order PCB: These instruction is made for orders placed at jlcpcb.com. - Generate gerber files from KiCad: - To document - Convert BOM file and placement file using converter scripts: - To document
3. PCB Bring-up - To safely perform bringup of the PCB, connect the "VIN 12V" and "GND" to a current limited 200mA/12V supply. - Test that the four power rails (1.0V, 1.2V, 1.8V and 3.3V) is stable and accurate. - Check that the "Power good" led of the power supply is turned off. - Check that the "Done" led close to the FPGA is on. - For now the FTDI is not working, so…
Main components on the AmplifierHat
AmplifierHat bill of materials (BOM)
179 components, 43 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | ~ | TPA3250 | U201 |
| 2 | ~ | OPA1632DR | U401, U402 |
| 1 | PCM1792A | SSOP-28_5.3x10.2mm_P0.65mm | U501 |
| 1 | TMR1222 | TMR1222 | U601 |
| 1 | TMR1211 | TMR1222 | U602 |
| 2 | OPA1612AXD OPA1612AxD | SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.29x3mm | U801, U802 |
| 2 | 2N7002 | SOT-23 | Q601, Q602 |
| 3 | CONN_02X06_ODD_EVEN Conn_02x06_Odd_Even | PinSocket_2x06_P1.27mm_Vertical_SMD | J301, J302, J303 |
| 2 | ~ | Speaker terminal | J701, J702 |
| 1 | CONN_02X02_ODD_EVEN Conn_02x02_Odd_Even | Molex_Mini-Fit_Jr_5566-04A_2x02_P4.20mm_Vertical | J901 |
| 1 | CONN_02X01 Conn_02x01 | Molex_Mini-Fit_Jr_5566-02A_2x01_P4.20mm_Vertical | J902 |
| 16 | TestPoint | test_clip | TP202, TP203, TP204, TP205, TP401, TP402, TP403, TP404 +8 |
| 4 | 10uH 20A | PDMTAT068125 | L201, L202, L203, L204 |
| 1 | 10UF 10uF | CP_Radial_D6.3mm_P2.50mm | C201 |
| 3 | 1000UF 1000uF | CP_Radial_D16.0mm_P7.50mm | C202, C203, C204 |
| 3 | 100NF 100nF | C_0603_1608Metric | C205, C207, C237 |
| 3 | 470UF 470uF | CP_Elec_5x3 | C206, C219, C227 |
| 4 | 33NF 33nF | C_0603_1608Metric | C208, C210, C235, C238 |
| 4 | 10NF 10nF | C_Disc_D8.0mm_W2.5mm_P5.00mm | C209, C220, C224, C236 |
| 7 | 1UF 1uF | C_0603_1608Metric | C211, C216, C221, C222, C226, C231, C232 |
Show 23 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 4 | 1UF 1uF | C_Rect_L7.5mm_W6.5mm_P5.00mm | C212, C217, C228, C233 |
| 4 | 1NF 1nF | C_Rect_L4.6mm_W3.0mm_P2.50mm_MKS02_FKP02 | C213, C218, C229, C234 |
| 12 | 10UF 10uF | C_0603_1608Metric | C214, C215, C225, C230, C403, C406, C410, C413 +4 |
| 3 | 47UF 47uF | C_0603_1608Metric | C223, C508, C509 |
| 4 | 1NF 1nF | C_0603_1608Metric | C401, C407, C408, C414 |
| 4 | 100PF 100pF | C_0603_1608Metric | C402, C405, C409, C412 |
| 2 | 2.7NF 2.7nF | C_0603_1608Metric | C404, C411 |
| 7 | 0.1UF 0.1uF | C_0603_1608Metric | C501, C506, C507, C802, C803, C804, C805 |
| 1 | C_Polarized_US | CP_Radial_D10.0mm_P2.50mm | C601 |
| 4 | 1.5nF | C_0603_1608Metric | C801, C806, C807, C808 |
| 11 | 10K | R_0603_1608Metric | R201, R202, R208, R209, R214, R215, R216, R219 +3 |
| 2 | 3.3 | R_0603_1608Metric | R203, R213 |
| 4 | 3.3 | R_Axial_DIN0309_L9.0mm_D3.2mm_P2.54mm_Vertical | R204, R205, R211, R212 |
| 1 | 22K | R_0603_1608Metric | R206 |
| 1 | 30K | R_0603_1608Metric | R207 |
| 1 | ~ | R_0603_1608Metric | R210 |
| 7 | 0 | R_0603_1608Metric | R217, R218, R402, R409, R411, R418, R608 |
| 4 | 270 | R_0603_1608Metric | R401, R408, R410, R417 |
| 4 | 40 | R_0603_1608Metric | R403, R407, R412, R416 |
| 4 | 1K | R_0603_1608Metric | R404, R406, R413, R415 |
| 22 | R | R_0603_1608Metric | R405, R414, R501, R502, R503, R504, R505, R506 +14 |
| 8 | 3K | R_0603_1608Metric | R601, R604, R605, R607, R801, R802, R803, R804 |
| 3 | 0 | R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R602, R603, R606 |
AmplifierHat design files
The KiCad project lives in the RasmusStagsted/ArtixDevBoard repository on GitHub; these links point at the commit this page was built from.
AmplifierHat: common questions
What microcontroller does the AmplifierHat use?
The AmplifierHat is built around the TPA3250, from the FPGA family.
How big is the AmplifierHat PCB?
The AmplifierHat measures 150 × 75 mm, has 4 copper layers and is 1.6 mm thick.
How many components are on the AmplifierHat?
179 components, from 43 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 AmplifierHat design files?
From the RasmusStagsted/ArtixDevBoard 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 AmplifierHat design in my own project?
The repository has no license, so all rights stay with RasmusStagsted. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the AmplifierHat without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug FPGA firmware against it before you order a PCB.
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