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2024 PiezoPreamp3

arxwtf·2024_PiezoPreamp3

2024 PiezoPreamp3 PCB layout, top view — open source board by arxwtf
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About the 2024 PiezoPreamp3 PCB

2024 PiezoPreamp3 is an open source PCB design by arxwtf, published on GitHub under the MIT license. It is a 4-layer board measuring 71 × 36.8 mm, with 73 components from 37 distinct parts.

Other key parts include the OPA145IDBVR, ZXMP3A17E6TA and C8653. By type, the board carries 14 resistors, 13 capacitors, 5 switches, 5 diodes, 4 ICs and 4 connectors.

It belongs with the audio and power & battery designs in this gallery.

From the project

v3 of Piezo Preamp project. Started in KiCad v8

A simple preamp to be used for e.g. guitar piezo (contact) microphones.

Basically an integrator circuit. Provides low-impedance input. The gain is adjustable and depends on the input piezo capacitance. In my measurements, piezo discs have following capacitances:

- small disc (15mm diameter): ~7-10nF - medium disc (27mm diameter): ~16-22nF - large disc (35mm diameter): ~37-40nF

2024 PiezoPreamp3, from the project README
From the project README

Main components on the 2024 PiezoPreamp3

OPA145IDBVRZXMP3A17E6TAC8653

2024 PiezoPreamp3 bill of materials (BOM)

73 components, 37 distinct parts — part numbers from the project's BOM.

QtyPartRefs
2
OPA145IDBVR
OPA145
U101, U102
1
ZXMP3A17E6TA
U201
1
C8653
BC847BS,115
U301
2
SJ-63053A
6.3mm stereo
J101, J102
1
694106301002
DC IN 5.5/2.1mm
J201
1
5201
Spring Contact
J401
4
GRM31C5C1H683JA01L
68n
Cb101, Cb104, Chp101, Chp108
3
GRM21B5C1H223JA01L
22n
Cb102, Cf102, Ct103
2
GRM31C5C1H104JA01L
100n
Cb103, Chp107
1
GRM1885C1H102JA01D
1n
Cf101
6
GRM1885C1H472JA01D
4n7
Cf103, Cf104, Cf105, Ct101, Ct102, Ct104
4
GRM31C5C1H224JE02L
220n
Chp102, Chp103, Chp105, Chp106
1
EEEFTH101XAP
100u 50V
Chp104
1
-
9V battery holder
H422
1
TC33X-2-103E
trim B10k
RV301
2
RT0603FRE073K9L
3k9
Rb101, Rb102
1
MCA1206MD1005BP100
10M
Rf101
2
RT0603DRD072K2L
2k2
Rt101, Rt102
2
SK14D01G6
S101, S102
1
0S203011MA2QP1
S103
Show 17 more
QtyPartRefs
1
EG4208A
S201
1
OS102011MA1QN1
S301
2
CDSOD323-T12LC
12V 1pF
D101, D102
1
D20V0L1B2WS-7
20V 15pF
D201
1
DDZ12B-7
D202
1
APT1608LSECK/J3-PRV
Red 100mcd/120°/2mA
D301
3
GRM31C5C1H224JE02L
220n
C101, C102, C103
1
CL10C101JB8NNNC
100p
C104
1
EEEFTH101XAP
100u 50V
C105
6
CL31A226KAHNNNE
22u
C201, C202, C203, C204, C301, C302
2
GRM31C5C1H104JA01L
100n
C205, C206
2
ERA3AEB151V
150R
R101, R102
2
RT0603FRE073K9L
3k9
R103, R303
1
MCA1206MD1005BP100
10M
R104
2
ERA-6AEB101V
100R
R105, R202
2
RT0603BRD0710KL
10k
R201, R305
5
RT0603FRD0747KL
47k
R203, R204, R301, R302, R304

2024 PiezoPreamp3 design files

The KiCad project lives in the arxwtf/2024_PiezoPreamp3 repository on GitHub; these links point at the commit this page was built from.

2024 PiezoPreamp3: common questions

How big is the 2024 PiezoPreamp3 PCB?

The 2024 PiezoPreamp3 measures 71 × 36.8 mm, has 4 copper layers and is 1.6062 mm thick.

How many components are on the 2024 PiezoPreamp3?

73 components, from 37 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 2024 PiezoPreamp3 design files?

From the arxwtf/2024_PiezoPreamp3 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 2024 PiezoPreamp3 design in my own project?

Yes, under the terms of its MIT license, which arxwtf chose for the repository.

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