Opamp vos
About the Opamp vos PCB
Opamp vos is an open source PCB design by cellularmitosis, published on GitHub under the MIT license. It is a 2-layer board measuring 99.7 × 49.5 mm, with 94 components from 21 distinct parts.
Other key parts include the UA741, OP07, LM358 and LM324. By type, the board carries 44 resistors, 20 capacitors, 15 test points, 4 ICs, 4 jumpers and 3 diodes.
From the project
A board to measure the Vos (input offset voltage) of op amps.
A board to measure the Vos (input offset voltage) of op amps.
This board design is Open-Source Hardware. It is licensed under the MIT License. It was designed by Jason Pepas.
Main components on the Opamp vos
Opamp vos bill of materials (BOM)
94 components, 21 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | UA741 | DIP8_059A_PL | U10 |
| 1 | OP07 | DIP8_059A_PL | U20 |
| 1 | LM358 | DIP8_059A_PL | U30 |
| 1 | LM324 | DIP14_PL | U40 |
| 1 | 2N3904 | TO-92_Q_EBC_059Bo_PL | Q60 |
| 1 | 2N3906 | TO-92_Q_EBC_059Bo_PL | Q61 |
| 1 | BARREL_JACK | BARREL_JACK_21x55 | CON60 |
| 1 | CONN_2X1 | SIL-2 | P60 |
| 4 | JUMPER | SIL-2 | JP10, JP11, JP20, JP21 |
| 15 | TEST | TEST | TP0, TP11, TP12, TP13, TP14, TP21, TP22, TP23 +7 |
| 3 | 1N4148 | DIODE_SS_059A_03_PL | D60, D61, D62 |
| 16 | 0.1uF | CERCAP_15_059B_0805 | C10, C11, C20, C21, C30, C31, C32, C33 +8 |
| 2 | 10nF | CERCAP_15_059B_0805 | C12, C22 |
| 2 | 1uF | ELCAP_10_20_V_059A | C60, C61 |
| 16 | 10k | R_AXIAL_0W25_059A_PL | R10, R13, R20, R23, R30, R33, R35, R38 +8 |
| 16 | 10 | R_AXIAL_0W25_059A_PL | R11, R12, R21, R22, R31, R32, R36, R37 +8 |
| 1 | 10k | 3296W_PL | R14 |
| 6 | 0R | R_AXIAL_0W25_059A_PL | R15, R16, R17, R25, R26, R27 |
| 1 | 20k | 3296W_PL | R24 |
| 2 | 4.7k | R_AXIAL_0W25_059A_PL | R60, R61 |
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| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 2 | 10R | R_AXIAL_0W25_059A_PL | R62, R63 |
Opamp vos design files
The KiCad project lives in the cellularmitosis/opamp-vos repository on GitHub; these links point at the commit this page was built from.
Opamp vos: common questions
How big is the Opamp vos PCB?
The Opamp vos measures 99.7 × 49.5 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Opamp vos?
94 components, from 21 distinct parts. The full bill of materials is listed on this page.
Where can I download the Opamp vos design files?
From the cellularmitosis/opamp-vos repository on GitHub, which has the KiCad layout; the links under Design files point to each one.
Can I use the Opamp vos design in my own project?
Yes, under the terms of its MIT license, which cellularmitosis chose for the repository.