Quasar Synthesizer Card
About the Quasar Synthesizer Card PCB
Quasar Synthesizer Card is an open source STM32 PCB design by petrinm, published on GitHub under the CERN-OHL-W-2.0 license. It is a 4-layer board measuring 71 × 61.4 mm, with 130 components from 48 distinct parts.
Its main chip is the STM32F030F4Px, from the STM32 family. Other key parts include the TPS7A0518PDBV, TCA9801, TPS7A0533PDBV, LMX2592 and DS90LV011A. By type, the board carries 79 capacitors, 30 resistors, 12 ICs, 4 diodes, 2 connectors and 1 crystal.
It belongs with the audio designs in this gallery.
From the project
Hardware design files are disrtributed under CERN Open Hardware Licence Version 2 - Weakly Reciprocal licence.
Main components on the Quasar Synthesizer Card
Quasar Synthesizer Card bill of materials (BOM)
130 components, 48 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | TPS7A0518PDBV | SOT-23-5 | U1 |
| 1 | TCA9801 | VSSOP-8_3x3mm_P0.65mm | U2 |
| 1 | STM32F030F4Px | TSSOP-20_4.4x6.5mm_P0.65mm | U4 |
| 1 | TPS7A0533PDBV | SOT-23-5 | U7 |
| 2 | LMX2592 | Texas_RHA0040B_VQFN-40-1EP_6x6mm_P0.5mm_EP4.15x4.15mm_ThermalVias | U8, U9 |
| 1 | DS90LV011A | SOT-23-5 | U12 |
| 1 | SI53340-B-GM | QFN-16-1EP_3x3mm_P0.5mm_EP1.75x1.75mm_ThermalVias | U17 |
| 1 | TPSM843620 | Texas_uSIP_SIT0015A | U23 |
| 3 | LP5907MFX-3.3 | SOT-23-5 | U27, U28, U29 |
| 1 | ASE-40MHz | Oscillator_SMD_Abracon_ASE-4Pin_3.2x2.5mm | X1 |
| 1 | Conn_01x03 | PinSocket_1x03_P2.54mm_Vertical | J2 |
| 1 | Conn_Coaxial | SMA_Samtec_SMA-J-P-H-ST-EM1_EdgeMount | J3 |
| 1 | Jumper_2_Open | PinHeader_1x02_P2.54mm_Vertical | JP1 |
| 3 | LED | LED_0603_1608Metric | D1, D3, D5 |
| 1 | LED Red | LED_0603_1608Metric | D4 |
| 1 | FerriteBead | L_0603_1608Metric | FB2 |
| 1 | 1u 25V | C_0603_1608Metric | C1 |
| 5 | 1u 16V | C_0603_1608Metric | C2, C14, C31, C32, C37 |
| 12 | 100n 16V | C_0603_1608Metric | C3, C4, C5, C6, C7, C62, C180, C182 +4 |
| 4 | 10n HiQ | R_0402_1005Metric | C8, C9, C10, C11 |
Show 28 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 10n | C_0603_1608Metric | C13 |
| 1 | 10n HiQ | C_0603_1608Metric | C18 |
| 14 | 100n 16V | C_0402_1005Metric | C20, C21, C22, C23, C24, C25, C28, C30 +6 |
| 5 | 10u | C_0603_1608Metric | C26, C27, C82, C92, C94 |
| 4 | 100p | C_0402_1005Metric | C33, C34, C95, C97 |
| 4 | 220n 6.3V | C_0402_1005Metric | C39, C40, C101, C102 |
| 2 | 100n | C_0603_1608Metric | C43, C65 |
| 2 | 4n7 | C_0603_1608Metric | C44, C87 |
| 2 | 3n3 | C_0603_1608Metric | C45, C88 |
| 8 | 10u | C_0805_2012Metric | C46, C47, C51, C52, C89, C90, C98, C100 |
| 6 | 1u | C_0603_1608Metric | C48, C49, C50, C91, C93, C96 |
| 1 | 1n HiQ | C_0603_1608Metric | C106 |
| 2 | 10u 25V | C_0805_2012Metric | C181, C196 |
| 1 | 100n 25V | C_0603_1608Metric | C197 |
| 1 | 2u2 16V | C_0603_1608Metric | C203 |
| 1 | 10u 16V | C_0805_2012Metric | C204 |
| 2 | 100u 20% 6.3V | C_1210_3225Metric | C205, C206 |
| 6 | 10k 1% | R_0603_1608Metric | R1, R4, R17, R77, R78, R85 |
| 2 | 100R 1% | R_0402_1005Metric | R2, R3 |
| 6 | 1k 1% | R_0402_1005Metric | R5, R6, R7, R10, R16, R30 |
| 4 | 49R9 0.5% 1/16W | R_0402_1005Metric | R8, R9, R25, R26 |
| 1 | 10k 1% | R_0402_1005Metric | R11 |
| 3 | 1k | R_0603_1608Metric | R12, R24, R29 |
| 2 | 68R | R_0603_1608Metric | R13, R15 |
| 3 | 330R 1% | R_0603_1608Metric | R14, R27, R28 |
| 1 | 76k8 1% | R_0603_1608Metric | R76 |
| 1 | 4k7 1% | R_0603_1608Metric | R81 |
| 1 | 62k 1% | R_0603_1608Metric | R83 |
Quasar Synthesizer Card design files
The KiCad project lives in the petrinm/QuasarSDR-Hardware repository on GitHub; these links point at the commit this page was built from.
Quasar Synthesizer Card: common questions
What microcontroller does the Quasar Synthesizer Card use?
The Quasar Synthesizer Card is built around the STM32F030F4Px, from the STM32 family.
How big is the Quasar Synthesizer Card PCB?
The Quasar Synthesizer Card measures 71 × 61.4 mm, has 4 copper layers and is 1.6 mm thick.
How many components are on the Quasar Synthesizer Card?
130 components, from 48 distinct parts. The full bill of materials is listed on this page.
Where can I download the Quasar Synthesizer Card design files?
From the petrinm/QuasarSDR-Hardware repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the Quasar Synthesizer Card design in my own project?
Yes, under the terms of its CERN-OHL-W-2.0 license, which petrinm chose for the repository.
Can I test firmware for the Quasar Synthesizer Card without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug STM32 firmware against it before you order a PCB.
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