2 layers75.5 × 62.5 mm
4 layers50.8 × 22.9 mm
Ocadc
emeb/orangecrab_adc7An ADC and audio FeatherWing to enable SDR experiments with the OrangeCrab
- Size
- 50.8 × 22.9 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 37
- Nets
- 52
- Pads
- 151
- Tracks, vias
- 275, 39
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 23 Jul 2020
- Updated
- 18 Aug 2020
Overview
Ocadc is an open-source printed circuit board by emeb, from the emeb/orangecrab_adc repository on GitHub. It is a 4-layer board of 50.8 × 22.9 mm with 37 parts on 52 nets, routed with 275 tracks and 39 vias.
It is built around the TPA6139A2PW and SJ-3523-SMT-TR. Its parts include 19 capacitors, 6 resistors, 4 ICs and 3 connectors.
Main components
2
TPA6139A2PW
TSSOP-14-40℃~+85℃ 0.005% 105dB 2 Single-Ended Inputs 2-Channel 25mA 25mWx2@32Ω 3V~3.6V 80dB TSSOP-14 Audio Amplifiers ROHSTexas InstrumentsAudio Amplifiers
SJ-3523-SMT-TR
SMD-25℃~+85℃ 12V 19mm 1A 3.5mm Headphone Jack 5mm 9mm Black Brass、Copper alloy Silver Surface Mount TRS SMD Audio Connectors ROHSCUIAudio Connectors (Headphones)
README
hardware/README.mdorangecrab_adc - hardware
Hardware design for the orangecrab_adc
This is just the KiCad design. The libraries are probably hosed (as usual) because your setup isn't the same as mine. Hopefully the rescue libs and cache have enough that you can see things.
Parts
37| Qty | Value | Footprint | References |
|---|---|---|---|
| 9 | 0.1uf | Capacitors_SMD:C_0603_HandSoldering | C1, C4, C6, C7, C9, C11, C12, C14, C19 |
| 6 | 10uf | Capacitors_SMD:C_0805_HandSoldering | C3, C5, C8, C10, C13, C15 |
| 4 | 1uf | Capacitors_SMD:C_0603_HandSoldering | C2, C16, C17, C18 |
| 2 | 100 | Resistors_SMD:R_0603_HandSoldering | R1, R3 |
| 2 | 330 | Resistors_SMD:R_0603_HandSoldering | R5, R6 |
| 1 | 50 | Resistors_SMD:R_0603_HandSoldering | R2 |
| 1 | 82K | Resistors_SMD:R_0603_HandSoldering | R4 |
| 1 | AD9203 | Housings_SSOP:TSSOP-28_4.4x9.7mm_Pitch0.65mm | U2 |
| 1 | Conn_01x04 | Pin_Headers:Pin_Header_Straight_1x04_Pitch2.54mm | J1 |
| 1 | Jumper_3_Bridged12 | Jumper:SolderJumper-3_P1.3mm_Bridged12_Pad1.0x1.5mm | JP3 |
| 1 | LOGO | footprints:ea | G*** |
| 1 | MCP1802 | TO_SOT_Packages_SMD:SOT-23-5_HandSoldering | U1 |
| 1 | PinHeader_01x12_2.54mm | Adafruit_FeatherWing:Conn_PinHeader_1x12 | JP1 |
| 1 | PinHeader_01x16_2.54mm | Adafruit_FeatherWing:Conn_PinHeader_1x16 | JP2 |
| 1 | SJ-3523-SMT-TR | CUI_SJ-3523-SMT-TR | J2 |
| 1 | SMA | footprints:SMA_END | J3 |
| 1 | TPA6139A2 | Housings_SSOP:TSSOP-14_4.4x5mm_Pitch0.65mm | U3 |
| 1 | TRANSFO4 | footprints:Pulse_SMD_Balun | T1 |
| 1 | XTAL_OSC_OE | Oscillators:Oscillator_SMD_SeikoEpson_SG210-4pin_2.5x2.0mm_HandSoldering | U4 |
Questions
How big is the Ocadc PCB?
It measures 50.8 × 22.9 mm and has 4 copper layers, 1.6 mm thick.
What parts does the Ocadc use?
37 parts, built around the TPA6139A2PW and SJ-3523-SMT-TR. 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.
Where can I download the Ocadc KiCad files?
From the emeb/orangecrab_adc repository on GitHub, at the commit this page was made from: the board is hardware/ocadc.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Ocadc design in my own project?
Its repository states no licence, so its author keeps all rights: ask emeb before reusing the design.
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