emeb/r820t285Breakout PCB design and STM32F0 firmware for the Rafael R820T2 tuner chip
R820t2 breakout is an open-source printed circuit board by emeb, from the emeb/r820t2 repository on GitHub. It is a 4-layer board of 43.4 × 25.4 mm with 83 parts on 39 nets, routed with 214 tracks and 35 vias.
It is built around the LD1117S33CTR-HXY and BAV99. Its parts include 21 capacitors, 12 resistors, 10 connectors, 3 ICs and 3 inductors. It belongs with the interfaces and adapters boards of this library.
Breakout PCB design and STM32F0 firmware for the Rafael R820T2 tuner chip
doc - documents for the chip and PCB design. This includes both the orginal mfgs datasheet as well as schematic and BOM for the PCB design.
f030_r820t2 - STM32F030 firmware. A simple serial command line interface to access registers and set frequency & gain parameters.
r820t2_breakout - KiCAD PCB design.
The PCB design is licensed separately from the driver code. Please see the LICENSE files within each sub-directory.
| Qty | Value | Footprint | References |
|---|---|---|---|
| 10 | 0.1uf | Capacitors_SMD:C_0603_HandSoldering | C103, C104, C108, C109, C113, C114, C116, C117, C118, C121 |
| 7 | CONN_01X01 | Connect:PINTST | P102, P103, P104, P105, P106, P107, P108 |
| 4 | 220 | Resistors_SMD:R_0603_HandSoldering | R101, R102, R107, R108 |
| 4 | 27pf | Capacitors_SMD:C_0603_HandSoldering | C105, C107, C110, C111 |
| 2 | 0 | Resistors_SMD:R_0603_HandSoldering | R105, R111 |
| 2 | 10uf | Capacitors_SMD:C_0805_HandSoldering | C112, C115 |
| 2 | 150nh | Resistors_SMD:R_0603_HandSoldering | L102, L103 |
| 2 | 330pf | Capacitors_SMD:C_0603_HandSoldering | C102, C119 |
| 2 | 4k7 | Resistors_SMD:R_0603_HandSoldering | R103, R104 |
| 2 | SMA | footprints:SMA_END | J101, J102 |
| 1 | 0.01uf | Capacitors_SMD:C_0603_HandSoldering | C101 |
| 1 | 10 | Resistors_SMD:R_0603_HandSoldering | R106 |
| 1 | 10k | Resistors_SMD:R_0603_HandSoldering | R112 |
| 1 | 1k8 | Resistors_SMD:R_0603_HandSoldering | R110 |
| 1 | 1uf | Capacitors_SMD:C_0603_HandSoldering | C106 |
| 1 | 28.8MHz | Crystals:Crystal_SMD_HC49-SD | Y101 |
| 1 | 6800pf | Capacitors_SMD:C_0603_HandSoldering | C120 |
| 1 | 8.2nH | Resistors_SMD:R_0603_HandSoldering | L101 |
| 1 | BAV99 | TO_SOT_Packages_SMD:SOT-23 | D101 |
| 1 | CONN_01X04 | Pin_Headers:Pin_Header_Straight_1x04_Pitch2.54mm | P101 |
| 1 | DNI | Resistors_SMD:R_0603_HandSoldering | R109 |
| 1 | LD1117S33CTR | SOT-223 | U103 |
| 1 | R820T2 | footprints:QFN-24-1EP_4x4mm_Pitch0.5mm_extended_pad | U102 |
| 1 | TCXO | Crystals:Crystal_SMD_Abracon_ABM3C-4pin_5.0x3.2mm | U101 |
| 1 | TRANSFO4 | footprints:Pulse_SMD_Balun | T101 |
The 52 most common of 83 parts.
It measures 43.4 × 25.4 mm and has 4 copper layers, 1.6 mm thick.
83 parts, built around the LD1117S33CTR-HXY and BAV99. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
From the emeb/r820t2 repository on GitHub, at the commit this page was made from: the board is r820t2_breakout/r820t2_breakout.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Its repository states no licence, so its author keeps all rights: ask emeb before reusing the design.
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