2 layers14 × 49.5 mm
4 layers45.2 × 40.4 mm
Logic analyzer
cheyao/ch32-logic-analyzer4200MHz USB 3.1 logic analyzer and 20MHz ADC w/ pulseview
- Size
- 45.2 × 40.4 mm
- Copper layers
- 4
- Thickness
- 1.58 mm
- Parts
- 100
- Nets
- 126
- Pads
- 519
- Tracks, vias
- 1,519, 194
- Pours
- 26
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 30 May 2026
- Updated
- 5 Aug 2026
Overview
Logic analyzer is an open-source printed circuit board by cheyao, from the cheyao/ch32-logic-analyzer repository on GitHub. It is a 4-layer board of 45.2 × 40.4 mm with 100 parts on 126 nets, routed with 1,519 tracks and 194 vias.
It is built around the CH32H417MEU6, LMV321IDCKT and TPD4EUSB30DQAR, with the AMS1117-3.3, TMUXHS4212RKSR and CC0402KRX7R7BB104 among its other parts. Its parts include 43 capacitors, 31 resistors, 7 ICs, 5 connectors and 3 diodes. It belongs with the sensors and measurement boards of this library.
Main components
10
CH32H417MEU6
QFN-88(10x10)QFN-88(10x10) Microcontrollers (MCU/MPU/SOC) ROHSWCH (Nanjing Qinheng Microelectronics)Microcontrollers (MCU/MPU/SOC)
LMV321IDCKT
SC-70-5-40℃~+125℃ 1 1.7mV 11nA 130uA 1MHz 1V/us 2.7V~5.5V 39nV/√Hz@1kHz 40mA 5nA 5uV/℃ 63dB Rail-to-rail output SC-70-5 Operational Amplifier ROHSTexas InstrumentsOperational Amplifier
TPD4EUSB30DQAR
USON-10(1x2.5)-40℃~+85℃ 0.8pF 45W@8/20us 5.5V 5A@8/20us 7V 8V ESD Four channels IEC 61000-4-2、IEC 61000-4-5 Unidirectional USON-10(1x2.5) ESD and Surge Protection (TVS/ESD) ROHSTexas InstrumentsESD And Surge Protection (TVS/ESD)
AMS1117-3.3
SOT-223-40℃~+125℃ 0.003%Vout 1 1.1V@(800mA) 15V 1A 3.3V 5mA 72dB@(120Hz) Fixed Over Current Protection、Short Circuit Protection、Thermal shutdown Positive SOT-223 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSAdvanced Monolithic SystemsVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
TMUXHS4212RKSR
VQFN-20(2.5x4.5)0.6pF 0℃~+70℃ 1.71V~1.98V、3V~3.6V 100ns 100ns 13GHz 2 2:1 70ps 8.4Ω VQFN-20(2.5x4.5) Analog Switches, Multiplexers ROHSTexas InstrumentsAnalog Switches, Multiplexers
CC0402KRX7R7BB104
0402100nF 16V X7R ±10% 0402 Multilayer Ceramic Capacitors MLCC - SMD/SMT ROHSYAGEOMultilayer Ceramic Capacitors MLCC - SMD/SMTVJ0402A150JXAAC
040215pF 50V C0G ±5% 0402 Multilayer Ceramic Capacitors MLCC - SMD/SMT ROHSVishay IntertechnologyMultilayer Ceramic Capacitors MLCC - SMD/SMT
AC0402FR-075K1L
0402-55℃~+155℃ 5.1kΩ 50V 62.5mW Thick Film Resistor ±1% ±100ppm/℃ 0402 Chip Resistor - Surface Mount ROHSYAGEOChip Resistor - Surface MountMCS04020C1000FE000
0402-55℃~+155℃ 100Ω 50V 63mW Thin Film Resistor ±1% ±50ppm/℃ 0402 Chip Resistor - Surface Mount ROHSVishay IntertechnologyChip Resistor - Surface Mount
EXB-V8V104JV
0603x4100kΩ 4 63mW 8 ±200ppm/℃ ±5% 0603x4 Resistor Networks, Arrays ROHSPanasonicResistor Networks & Arrays
README
README.md200Msps 16ch logic analyzer + 20Msps oscilloscope
This is a cheap 200Msps logic analyzer with a 20Msps analog component. It uses USB 3.2 to send data to the computer, and can also act as a ch32h417 development board.
It is usable with pulseview delivering a beautiful interface and allowing you to view all kinds of diffrent protocols. And with voltage changing, it supports 1.2V, 3.3V and 5V opration modes.
The analog channels support 20Msps at 10bit accuracy, or 5MHz at 12bit accuracy. Input range is from 0V to 5V, and it supports external triggering too!
The bottom row of header breaks out GPIO pins of various protocols, allowing the board to also become a devboard that can be programed via USB.
The PCB is a 4-layered board in order to preserve signal intergity on the USB 3.2 data lines. With high-quality TI active components to preserve signal quality.
Parts
100| Qty | Value | Footprint | References |
|---|---|---|---|
| 18 | 100nF | Capacitor_SMD:C_0402_1005Metric | C21, C23, C24, C25, C26, C27, C30, C31, C32, C34, C35, C36, C358, C359, C360, C361 +2 |
| 16 | 15pF | Capacitor_SMD:C_0402_1005Metric_Pad0.74x0.62mm_HandSolder | C5, C6, C7, C8, C9, C10, C11, C12, C13, C14, C15, C16, C17, C18, C19, C20 |
| 16 | 1k | Resistor_SMD:R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R1, R2, R3, R4, R5, R6, R7, R8, R9, R10, R11, R12, R13, R14, R15, R16 |
| 7 | 4.7uF | Capacitor_SMD:C_0402_1005Metric | C28, C29, C33, C37, C39, C40, C41 |
| 5 | 5.1k | Resistor_SMD:R_0402_1005Metric | R21, R22, R26, R27, R28 |
| 4 | 100R | Resistor_SMD:R_0402_1005Metric | R18, R19, R20, R30 |
| 4 | 100k | Resistor_SMD:R_Array_Convex_4x0603 | RN1, RN2, RN3, RN4 |
| 4 | 1k | Resistor_SMD:R_0402_1005Metric | R23, R24, R25, R29 |
| 3 | LED | LED_SMD:LED_0402_1005Metric | D1, D2, D3 |
| 3 | TPD4EUSB30 | Package_SON:USON-10_2.5x1.0mm_P0.5mm | U16, U22, U23 |
| 2 | 2.2R | Resistor_SMD:R_0402_1005Metric | R97, R98 |
| 2 | 33pF | Capacitor_SMD:C_0402_1005Metric | C1, C2 |
| 2 | Conn_02x15 | Connector_PinHeader_2.54mm:PinHeader_2x15_P2.54mm_Vertical | J4, J5 |
| 2 | MountingHole | logic-analyzer:Icy Electronics Logo | H1, H2 |
| 2 | SW_Push | logic-analyzer:SW_Push_SPST_TSA016 | SW1, SW2 |
| 1 | 1A@12V | Fuse:Fuse_0805_2012Metric | F2 |
| 1 | 25MHz 20pF | Crystal:Crystal_SMD_2016-4Pin_2.0x1.6mm | Y1 |
| 1 | AMS1117-3.3 | Package_TO_SOT_SMD:SOT-89-3 | U2 |
| 1 | CH32H417MxUx | logic-analyzer:QFN-88-1EP_10x10mm_P0.4mm_EP5.7x5.7mm_ThermalVias | U1 |
| 1 | Conn_02x04 | Connector_PinHeader_1.27mm:PinHeader_2x04_P1.27mm_Horizontal | J3 |
| 1 | Conn_02x20 | Connector_PinHeader_1.27mm:PinHeader_2x20_P1.27mm_Horizontal | J2 |
| 1 | LMV321 | Package_TO_SOT_SMD:SOT-353_SC-70-5 | U3 |
| 1 | Sel | Jumper:SolderJumper-3_P1.3mm_Bridged12_RoundedPad1.0x1.5mm | JP1 |
| 1 | TMUXHS4212 | Package_DFN_QFN:DHVQFN-20-1EP_2.5x4.5mm_P0.5mm_EP1x3mm | U5 |
| 1 | USB_C_Receptacle | logic-analyzer:USB_C_Receptacle_SHOU-HAN_24P-QT | J1 |
Questions
How big is the Logic analyzer PCB?
It measures 45.2 × 40.4 mm and has 4 copper layers, 1.58 mm thick.
What parts does the Logic analyzer use?
100 parts, built around the CH32H417MEU6, LMV321IDCKT, TPD4EUSB30DQAR and AMS1117-3.3. 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 Logic analyzer KiCad files?
From the cheyao/ch32-logic-analyzer repository on GitHub, at the commit this page was made from: the board is hardware/logic-analyzer.kicad_pcb and its schematic adaptor/adaptor.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Logic analyzer design in my own project?
Its repository states no licence, so its author keeps all rights: ask cheyao before reusing the design.
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