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Mixed-Signal STM32

cipher8-0·Mixed-Signal_STM32_PCB

Mixed-Signal STM32 PCB layout, top view — open source STM32 board by cipher8-0

About the Mixed-Signal STM32 PCB

Mixed-Signal STM32 is an open source STM32 PCB design by cipher8-0, published on GitHub. It is a 4-layer board measuring 60.1 × 78 mm, with 110 components from 43 distinct parts.

Its main chip is the STM32F103CBTx, from the STM32 family. Other key parts include the HT75xx-1-SOT89, TLV62569DBV, MCP6001-OT, USBLC6-2SC6 and ADC141S626. By type, the board carries 45 capacitors, 36 resistors, 11 ICs, 9 diodes, 4 connectors and 3 inductors.

It belongs with the test & measurement designs in this gallery.

From the project

A USB-powered mixed-signal board for audio-bandwidth signal generation and analysis. Built around an STM32F1 MCU with a DAC output stage, ADC input, and BNC output — aimed at applications like function generation, frequency-response measurement, DSP prototyping, and general lab/i

A USB-powered mixed-signal board for audio-bandwidth signal generation and analysis. Built around an STM32F1 MCU with a DAC output stage, ADC input, and BNC output — aimed at applications like function generation, frequency-response measurement, DSP prototyping, and general lab/instrumentation use.

Designed in KiCad, fabricated and assembled via JLCPCB (LCSC parts).

Main components on the Mixed-Signal STM32

HT75xx-1-SOT89TLV62569DBVMCP6001-OTSTM32F103CBTxUSBLC6-2SC6ADC141S626REF3033AIDBZTDAC7563SDGSR

Mixed-Signal STM32 bill of materials (BOM)

110 components, 43 distinct parts.

QtyPartRefs
1
HT75xx-1-SOT89
U1
1
TLV62569DBV
U2
4
MCP6001-OT
U3, U8, U9, U11
1
STM32F103CBTx
U4
1
USBLC6-2SC6
U5
1
ADC141S626
U6
1
REF3033AIDBZT
U7
1
DAC7563SDGSR
U10
1
16MHz
Y1
1
Conn_02x05_Counter_Clockwise
J2
2
Conn_Coaxial
J3, J4
1
USB_C_Receptacle_USB2.0_16P
J5
1
CMF3216F-900-2P-T
FL1
1
GREEN
D1
1
LED_RGBA
D2
1
PESD3V3L1BA
D3
4
D_TVS_Small
D4, D5, D6, D7
1
ESD9B3.3ST5G
D8
1
PESD3V3L1BA,115
D9
1
6.8u
L1
Show 23 more
QtyPartRefs
2
10n
L2, L100
5
1u
C1, C2, C15, C17, C41
5
22u
C3, C4, C5, C6, C8
1
DNP
C7
16
100n
C9, C11, C12, C13, C14, C20, C21, C22 +8
7
10u
C10, C24, C26, C27, C29, C30, C39
1
10n
C16
2
10p
C18, C19
4
150p
C31, C35, C38, C43
4
1n
C34, C36, C42, C44
1
10R
R1
1
100k
R2
3
22k
R3, R27, R34
9
1k
R4, R5, R6, R12, R13, R14, R23, R29 +1
4
10k
R7, R9, R10, R32
1
0R
R8
1
1k5
R11
6
49R9
R15, R18, R19, R20, R22, R36
2
5k1
R16, R17
2
0R
R21, R31
2
2M2
R24, R25
2
6k8
R26, R33
2
12k
R28, R35

Mixed-Signal STM32 design files

The KiCad project lives in the cipher8-0/Mixed-Signal_STM32_PCB repository on GitHub; these links point at the commit this page was built from.

Mixed-Signal STM32: common questions

What microcontroller does the Mixed-Signal STM32 use?

The Mixed-Signal STM32 is built around the STM32F103CBTx, from the STM32 family.

How big is the Mixed-Signal STM32 PCB?

The Mixed-Signal STM32 measures 60.1 × 78 mm, has 4 copper layers and is 1.59 mm thick.

How many components are on the Mixed-Signal STM32?

110 components, from 43 distinct parts. The full bill of materials is listed on this page.

Where can I download the Mixed-Signal STM32 design files?

From the cipher8-0/Mixed-Signal_STM32_PCB repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Mixed-Signal STM32 design in my own project?

The repository has no license, so all rights stay with cipher8-0. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the Mixed-Signal STM32 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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