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CEM3320 LPF plug in board

JordanAceto·VCF_plug_in_boards·CEM3320_LPF_plug_in_board/kicad_docs/CEM3320_LPF_plug_in_board.kicad_pcb

CEM3320 LPF plug in board layout, top view — open source board by JordanAceto
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About the CEM3320 LPF plug in board

CEM3320 LPF plug in board is an open source PCB design by JordanAceto, published on GitHub under the CC-BY-4.0 license. It is a 2-layer board measuring 58.4 × 50.8 mm, with 42 components from 31 distinct parts.

Other key parts include the LM13700 and TL072. By type, the board carries 21 resistors, 12 capacitors, 4 connectors and 2 ICs.

It belongs with the audio designs in this gallery.

From the project

Various small synthesizer Voltage Controlled Filter pcbs

Small CEM3320 based low pass filter PCB, designed to plug into a larger motherboard.

CEM3320 based LPF with Q compensation. This PCB includes the audio path and CV inputs for frequency and feedback, but does not include any modulation sources.

The intended use for this board is to plug in to a larger motherboard which contains slots for one or more of these plug-in boards, as well as modulation sources, panel controls, and input/output routing.

CEM3320 LPF plug in board, from the project README
From the project README

Main components on the CEM3320 LPF plug in board

LM13700TL072

CEM3320 LPF plug in board bill of materials (BOM)

42 components, 31 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
LM13700
CEM3320
U1
1
TL072
U2
1
signal_in
J1
1
cutoff_CV_in
J2
1
signal_out
J3
1
feedback_CV_in_and_PS
J4
1
10k
RV1
2
100k
RV2, RV3
2
220pF
C1, C2
1
470N
220pF
C3
1
100P
220pF
C4
2
470nF
C5, C7
1
100pF
C6
1
4N7
100pF
C8
2
10U
100nF
C9, C10
2
100N
100nF
C11, C12
2
10K
91k
R1, R6
4
220
100k
R2, R4, R9, R12
1
10K
330k
R3
1
10K
10k
R5
Show 11 more
QtyPartRefs
1
10K
1k2
R7
2
10K
180k
R8, R11
1
1K8
91k
R10
1
10K
18k
R13
1
10K
51k
R14
1
150K
91k
R15
1
15K
180k
R16
1
4K7
100k
R17
2
270
100k
R18, R21
1
15K
100k
R19
1
270K
150k
R20

CEM3320 LPF plug in board design files

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

CEM3320 LPF plug in board: common questions

How big is the CEM3320 LPF plug in board?

The CEM3320 LPF plug in board measures 58.4 × 50.8 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the CEM3320 LPF plug in board?

42 components, from 31 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 CEM3320 LPF plug in board design files?

From the JordanAceto/VCF_plug_in_boards repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.

Can I use the CEM3320 LPF plug in board design in my own project?

Yes, under the terms of its CC-BY-4.0 license, which JordanAceto chose for the repository.

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