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AFE

Blaze-Pascal·Masters-Multi-Channel_DAQ·KiCad/AFE/AFE.kicad_pcb

AFE PCB layout, top view — open source board by Blaze-Pascal

About the AFE PCB

AFE is an open source PCB design by Blaze-Pascal, published on GitHub under the GPL-3.0 license. It is a 4-layer board measuring 100 × 100 mm, with 198 components from 47 distinct parts.

Other key parts include the LMV358, CDCV304, MCP4551T-103E/MS, MCP4728 and Tang_Nano_9K. By type, the board carries 89 resistors, 66 capacitors, 18 ICs, 9 connectors, 5 transistors and 4 diodes.

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

From the project

Custom 2-channel digital oscilloscope DAQ with 20MHz bandwidth. Built with a custom KiCad analog front-end (AFE) PCB, Gowin FPGA (Tang Nano 9K) for high-speed signal buffering (VHDL), and an RPi Pico MCU for SCPI-like control. Includes a simple Python GUI for data visualization.

Goal: Build a custom data acquisition system capable of capturing and displaying fast analog signals with at least a 15 MHz bandwidth.

Project Scope: - Custom PCB & Analog Front-End (AFE): Designed and routed in KiCad. - FPGA Data Acquisition Engine (DAQ): Written in VHDL, deployed on a Tang Nano 9K (Gowin GW1NR-9). - MCU Control & Data Handling: Written in C (Arduino core) on a Raspberry Pi Pico, featuring a pseudo-SCPI command parser. - PC Software: A basic Python GUI for data visualization.

AFE, from the project README
From the project README

Main components on the AFE

LMV358CDCV304MCP4551T-103E/MSMCP4728Tang_Nano_9KAD9288BSTZ-40AMS1117-3.3CPC1017NAD8132ARMZADA4817-1ARDZAD8330ARQZ

AFE bill of materials (BOM)

198 components, 47 distinct parts.

QtyPartRefs
2
LMV358
U1, U2
1
CDCV304
U3
2
MCP4551T-103E/MS
MCP4551T-103E_MS
U4, U5
1
MCP4728
U6
1
Tang_Nano_9K
U7
1
AD9288BSTZ-40
U8
2
AMS1117-3.3
U9, U10
2
CPC1017N
U101, U201
2
AD8132ARMZ
U102, U202
2
ADA4817-1ARDZ
U103, U203
2
AD8330ARQZ
U104, U204
3
BSS138
Q1, Q2, Q3
2
AO3400A
Q101, Q201
1
9ESC400C0033L
Y1
1
PWR_Conn
J1
3
MCU_Conn
J2, J102, J202
1
GEN_IN
J3
1
Conn_02x24_Odd_Even
J4
1
MCU_Conn
J5
2
Conn_Coaxial
J101, J201
Show 27 more
QtyPartRefs
2
G6K-2
K101, K201
2
BAV99
D101, D201
2
SS14
D102, D202
4
330n
L1, L2, L3, L4
37
100n
C1, C2, C3, C4, C5, C6, C7, C8 +29
5
22u
C18, C19, C20, C28, C29
2
150p
C21, C22
2
22p
C23, C24
10
10u
C25, C26, C103, C104, C106, C111, C203, C204 +2
2
22n
C105, C205
2
1.5-3pF
C109, C209
2
DNP
C113, C213
4
15p
C114, C115, C214, C215
30
10k
R1, R2, R3, R4, R5, R8, R9, R10 +22
9
0
R6, R7, R13, R18, R19, R20, R21, R22 +1
6
1k
R24, R28, R31, R33, R106, R206
6
4.7k
R25, R29, R30, R32, R124, R224
8
100R
R26, R27, R112, R113, R114, R212, R213, R214
4
49.9
R101, R109, R201, R209
8
499
R102, R103, R107, R108, R202, R203, R207, R208
4
50-100
R110, R111, R210, R211
2
680k
R117, R217
2
220k
R119, R219
2
100k
R120, R220
2
1M
R121, R221
2
3.3k
R125, R225
4
0
RN1, RN2, RN3, RN4

AFE design files

The KiCad project lives in the Blaze-Pascal/Masters-Multi-Channel_DAQ repository on GitHub; these links point at the commit this page was built from.

AFE: common questions

How big is the AFE PCB?

The AFE measures 100 × 100 mm, has 4 copper layers and is 1.58428 mm thick.

How many components are on the AFE?

198 components, from 47 distinct parts. The full bill of materials is listed on this page.

Where can I download the AFE design files?

From the Blaze-Pascal/Masters-Multi-Channel_DAQ repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the AFE design in my own project?

Yes, under the terms of its GPL-3.0 license, which Blaze-Pascal chose for the repository.

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