4 layers55 × 100.5 mm
OSS Radio Hardware Design
Arkos-Engineering/HT-15_hardware
We can split this out into separate repos later, right now its very convenient to have everything here.
256 parts72
2 layers98 × 54.5 mm
Pico2 dual12bitadc
Sev5000/RP2350B_DualADC_DualPCM23A PCB to neatly package a rp2350b with two 12bit high speed adc and four channel audio input for use with hsdaoh
- Size
- 98 × 54.5 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 76
- Nets
- 104
- Pads
- 459
- Tracks, vias
- 1,371, 444
- Pours
- 4
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 3 Feb 2025
- Updated
- 10 May 2025
Overview
Pico2 dual12bitadc is an open-source printed circuit board by Sev5000, from the Sev5000/RP2350B_DualADC_DualPCM repository on GitHub. It is a 2-layer board of 98 × 54.5 mm with 76 parts on 104 nets, routed with 1,371 tracks and 444 vias.
It is built around the W25Q128JVSIQ and ABM8-272-T3. Its parts include 23 resistors, 22 capacitors, 7 connectors, 6 diodes and 1 IC. It belongs with the radio and wireless and audio and music boards and the RP2040 and RP2350 boards of this library.
Main components
2
W25Q128JVSIQ
SOIC-8-208mil-40℃~+85℃ 100,000 cycles 120ms@(32KB) 128Mbit 133MHz 1uA 2.7V~3.6V 20 Years 3ms Power-on reset、Hardware write protection、Software write protection、Write enable latch、Absolute write protection SPI SOIC-8-208mil NOR FLASH ROHSWinbondNOR FLASH
ABM8-272-T3
SMD3225-4P-40℃~+85℃ 10pF 12MHz 50Ω SMD crystal oscillator ±30ppm ±30ppm SMD3225-4P Crystals ROHSAbraconCrystals
README
README.mdRP2350B_DualADC_DualPCM
This is a PCB to neatly package a RP2350B, two AD9226 ADC PCBs and two PCM1802 audio boards for capture with hsdaoh. Specifically designed to still be usefull without smds (no head switch input then). Through-hole soldering only works just fine.
For use with https://github.com/steve-m/hsdaoh-rp2350/tree/pcm1802
Features:
- Two 12bit 40MS/s ADCs
- Four channel audio input all with a common clock
- No SMD soldering needed! Works fine just connecting breakout boards
- Socket for a Pimoroni PGA2350 and RP2350 and its periphery
- The protected head switch input has footprints for edge and horizontal SMA/SMB (SMD soldering needed)
- Socket for USB C and Micro B breakouts
Bill of material:
- 1x This PCB (Send the Gerber .zip to JLC, PCBWay, ..)
- 1x Pimoroni PGA2350
- 2x AD9226: https://aliexpress.com/item/1005003038271519.html
- 2x PCM1802: https://aliexpress.com/item/1005006412873984.html
- 4x RCA-105 or RCA-106: https://aliexpress.com/item/1005006152724809.html
- 2x 9pin 2.54mm pin-socket header
- 2x 2x10pin 2.54mm pin-socket header
- 2x 3pin 2.54mm pin header (remove the center pin for connecting R/L of the PCM1802)
- 2x 3pin 2.54mm pin-socket header (remove the center pin for connecting R/L of the PCM1802)
- 1x vertical 6mm push button: https://aliexpress.com/item/1005005831153897.html (horizontal soldered in vertical and a drop of glue for stability works as well)
No SMD variant:
- 1x Adafruit DVI breakout board
- 4x 2x8pin 2.54mm pin-socket header
- Either Adafruit USB Micro-B Breakout Board or Adafruit USB C Breakout Board
SMD Variant with PGA2350:
- Regular HDMI connector
- micro USB connector
- 8× 0402 270 ohm resistors
- 4x 0805 100nF ceramic capacitors
- For experimental EDID communication and HPD: 4x SOD123 3.3V Zener, 4x 0402 ~27 ohm resistors, 2x 0402 2k2 ohm resistors
For head switch input:
- 1x SOD123 3.3V zener diode
- 1x SOD123 standard diode
- 1x 0805 1k resistor
- 1x edge SMA/SMB or horizontal SMA/SMB and/or 2pin header
Notes:
- Soldering the RP2350B and its periphery might work but was not tested so far.
- The PCM1802 board needs MODE0 (MODE1 only with previous HSDAOH releases) bridged and connected to 3.3V with a wire (Those boards have a design error): NOTE: Picture shows the configuration for the older firmware, now only MODE0 needs to be bridged and connected to 3.3V
Parts
76| Qty | Value | Footprint | References |
|---|---|---|---|
| 10 | 100nF | Capacitor_SMD:C_0402_1005Metric_Pad0.74x0.62mm_HandSolder | C1, C2, C3, C5, C6, C7, C8, C9, C10, C11 |
| 8 | 270 | Resistor_SMD:R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R7, R8, R9, R10, R11, R12, R13, R14 |
| 7 | 27R4 | Resistor_SMD:R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R1, R2, R3, R16, R17, R18, R21 |
| 5 | D_Zener3.3V | Diode_SMD:D_SOD-123 | D3, D4, D5, D6, Z1 |
| 4 | 100nF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C19, C20, C21, C22 |
| 4 | 2k2 | Resistor_SMD:R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R19, R20, R22, R23 |
| 3 | 10uF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C4, C14, C15 |
| 2 | 15pF | Capacitor_SMD:C_0402_1005Metric_Pad0.74x0.62mm_HandSolder | C16, C17 |
| 2 | 1k | Resistor_SMD:R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R5, R6 |
| 2 | 2.2uF | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C12, C13 |
| 2 | L | RCJ-047:CUI_RCJ-047 | L, L |
| 2 | R | RCJ-047:CUI_RCJ-047 | R, R |
| 1 | 1k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R15 |
| 1 | 220 | Resistor_SMD:R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R4 |
| 1 | 3.3uH | Inductor_SMD:L_TDK_MLZ2012_h1.25mm | L1 |
| 1 | 4.7uF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C18 |
| 1 | ABM8-272-T3 | Crystal:Crystal_SMD_Abracon_ABM8G-4Pin_3.2x2.5mm | Y1 |
| 1 | AD9226 #1 | Custom Kicad Footprints:AD9226 PCB | AD9226 #1 |
| 1 | AD9226 #2 | Custom Kicad Footprints:AD9226 PCB | AD9226 #2 |
| 1 | Adafruit USB-C and Micro Breakout | Custom Kicad Footprints:Adafruit USB C and Micro Breakout | J11 |
| 1 | Aux Connector | Connector_PinHeader_2.54mm:PinHeader_1x08_P2.54mm_Vertical | GP9 GP8 GP6 GP7 3V3 GND 5V0 GND |
| 1 | D | Diode_SMD:D_SOD-123 | D2 |
| 1 | DVI Breakout | Custom Kicad Footprints:Adafruit DVI Breakout | DVI |
| 1 | HDMI_A | Connector_Video:HDMI_A_Molex_208658-1001_Horizontal | J6 |
| 1 | NCP1117-3.3_SOT223 | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U1 |
| 1 | PCM1802 #2 | Custom Kicad Footprints:PCM1802 PCB | PCM1802 #2 |
| 1 | PGA2350 Bottom | Connector_PinHeader_2.54mm:PinHeader_2x06_P2.54mm_Vertical | J3 |
| 1 | PGA2350 Left | Connector_PinHeader_2.54mm:PinHeader_2x10_P2.54mm_Vertical | J1 |
| 1 | PGA2350 Right | Connector_PinHeader_2.54mm:PinHeader_2x10_P2.54mm_Vertical | J2 |
| 1 | PGA2350 Top | Connector_PinHeader_2.54mm:PinHeader_2x06_P2.54mm_Vertical | J4 |
| 1 | RP2350B-QFN80 | RP2350:RP2350B_QFN-80_EP_10.573x10.573_Pitch0.4mm | RP2350B |
| 1 | SMA90 | Connector_Coaxial:SMA_Amphenol_901-143_Horizontal | J12 |
| 1 | SMAEdge | Connector_Coaxial:SMA_Samtec_SMA-J-P-H-ST-EM1_EdgeMount | HeadSw |
| 1 | SW_Push | Button_Switch_THT:SW_Tactile_SPST_Angled_PTS645Vx58-2LFS | Bootsel |
| 1 | USB_B_Micro | Connector_USB:USB_Micro-B_Wuerth_629105150521_CircularHoles | USB |
| 1 | W25Q128JVS | Package_SO:SOIC-8_5.23x5.23mm_P1.27mm | Flash |
The 75 most common of 76 parts.
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Questions
How big is the Pico2 dual12bitadc PCB?
It measures 98 × 54.5 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Pico2 dual12bitadc use?
76 parts, built around the W25Q128JVSIQ and ABM8-272-T3. 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 Pico2 dual12bitadc KiCad files?
From the Sev5000/RP2350B_DualADC_DualPCM repository on GitHub, at the commit this page was made from: the board is pico2_dual12bitadc.kicad_pcb and its schematic pico2_dual12bitadc.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Pico2 dual12bitadc design in my own project?
Its repository states no licence, so its author keeps all rights: ask Sev5000 before reusing the design.