2 layers57 × 55.2 mm
LogicAnalyzer
gusmanb/logicanalyzer
24 channel, 100Msps logic analyzer hardware and software
10 parts5.1kGPL-3.0
2 layers22 × 14 mm
Op amp proto
tdunning/differential-ampA simple layout for a differential amplifier
- Size
- 22 × 14 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 10
- Nets
- 9
- Pads
- 28
- Tracks, vias
- 55, 5
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 14 Dec 2025
- Updated
- 14 Dec 2025
Overview
Op amp proto is an open-source printed circuit board by tdunning, from the tdunning/differential-amp repository on GitHub, published under the MIT licence. It is a 2-layer board of 22 × 14 mm with 10 parts on 9 nets, routed with 55 tracks and 5 vias.
Its parts include 6 resistors, 2 connectors, 1 capacitor and 1 IC. It belongs with the audio and music boards of this library.
README
README.mdDifferential Amplifer
This circuit is designed to be a single supply differential amplifier module which can be used in building Manhattan style prototypes.
Use whatever op-amp has a compatible pinout (there are dozens) and pick your gain. All of the passives are laid out as 0805 components to make soldering easier.
Enjoy!
Parts
10| Qty | Value | Footprint | References |
|---|---|---|---|
| 5 | 10k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R1, R2, R3, R4, R6 |
| 1 | 100n | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C1 |
| 1 | 20k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R5 |
| 1 | Conn_01x012_MountingPin | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J1 |
| 1 | Conn_01x012_MountingPin | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J2 |
| 1 | Opamp_Dual | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U1 |
Questions
How big is the Op amp proto PCB?
It measures 22 × 14 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Op amp proto use?
10 parts. 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 Op amp proto KiCad files?
From the tdunning/differential-amp repository on GitHub, at the commit this page was made from: the board is op-amp-proto.kicad_pcb and its schematic op-amp-proto.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Op amp proto design in my own project?
Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
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