HardLabs

PICO ADC Test

kelu124·oshmri·hardware/5.PICO_ADC_Test/DESIGN_PICO_ADC_Test(20240202-1)/PICO_ADC_Test.kicad_pcb

PICO ADC Test PCB layout, top view — open source RP2040/RP2350 board by kelu124

About the PICO ADC Test PCB

PICO ADC Test is an open source RP2040/RP2350 PCB design by kelu124, published on GitHub. It is a 4-layer board measuring 85 × 54 mm, with 55 components from 30 distinct parts.

Its main chip is the MSI2500, from the RP2040/RP2350 family. Other key parts include the ADC10065CIMT/NOPB, AD8331ARQZ, MCP4812-E/MS and MD0100N8-G. By type, the board carries 26 capacitors, 11 resistors, 7 connectors, 5 ICs, 5 inductors and 1 diode.

From the project

OpenSourceHardware - going to MRI

1 dual PMOD, 12ADCbits+1clk + 1SPI (without MISO): based on the AD8331+ADC+DAC from https://github.com/kelu124/lit3rick/ (altium source in hardware folder) . Connector in: SMA, with MD0100 to protect. Possible elements: AD8331 ADC: AD9629BCPZ-65: 12bits, DAC: MCP4812-E/MS

Only logic through PMOD: positivepulse, negativepulse, damp. Expose remaining IOs on a 2.54" rail on the PMOD board (with 3.3V and GND as well) External GPIOs for +HV, -HV, GND. Internal : Positive: 3.3V -> 5V booster ; Negative: -5V rail for example (not mandatory if simpler exists)…

PICO ADC Test, from the project README
From the project README

Main components on the PICO ADC Test

ADC10065CIMT/NOPBAD8331ARQZMCP4812-E/MSMD0100N8-GMSI2500

PICO ADC Test bill of materials (BOM)

55 components, 30 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
ADC10065CIMT/NOPB
ADC10065CIMT_NOPB
IC1
1
AD8331ARQZ
IC2
1
MCP4812-E/MS
MCP4812-E_MS
IC3
1
MD0100N8-G
U1
1
MSI2500
Pico
U2
1
142-0701-801
AMPHENOL_132357-11
J1
1
22-23-2021
J2
1
61300611121
Würth Elektronik
J3
1
90122-0126
Conn_01x04
J4
2
22-23-2021
J5, J7
1
90122-0126
J6
1
BAV99-7-F
D1
5
BLM21BB750SN1D
ILHB1206ER750V
FB1, FB2, FB3, FB4, FB5
11
VJ1206Y104KXQCW1BC
100nF
C1, C2, C5, C9, C10, C11, C17, C19 +3
2
1206ZD475KAT4A
4.7uF
C3, C7
1
10UF
100nF
C4
1
VJ1206Y183KXAAC
18nF
C6
2
10NF
100nF
C8, C15
1
VJ1206A220JXQPW1BC
22pF
C12
2
1UF
100nF
C13, C16
Show 10 more
QtyPartRefs
1
18PF
100nF
C14
3
1NF
1nF
C18, C21, C23
1
10UF
50pF
C20
1
10UF
10uF
C25
1
18R
R1
4
10K
R2, R3, R5, R6
2
100R
R4, R8
1
280R
R7
1
12K
R9
2
510R
18R
R10, R11

PICO ADC Test design files

The KiCad project lives in the kelu124/oshmri repository on GitHub; these links point at the commit this page was built from.

PICO ADC Test: common questions

What microcontroller does the PICO ADC Test use?

The PICO ADC Test is built around the MSI2500, from the RP2040/RP2350 family.

How big is the PICO ADC Test PCB?

The PICO ADC Test measures 85 × 54 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the PICO ADC Test?

55 components, from 30 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 PICO ADC Test design files?

From the kelu124/oshmri 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 PICO ADC Test design in my own project?

The repository has no license, so all rights stay with kelu124. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the PICO ADC Test without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug RP2040/RP2350 firmware against it before you order a PCB.

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