JLI-2555-tin can mic
About the JLI-2555-tin can mic PCB
JLI-2555-tin can mic is an open source PCB design by anauseam, published on GitHub under the MIT license. It is a 2-layer board measuring 80 × 70 mm, with 24 components from 18 distinct parts.
Other key parts include the OPA134PA and TL072BCP. By type, the board carries 9 capacitors, 9 resistors, 2 ICs, 1 connector, 1 battery holder and 1 microphone.
From the project
JLI-2555 Microphone preamplifier
An open-source microphone circuit using a JLI-2555 capsule, built to be housed inside a standard tin can.
For a detailed overview of the circuit analysis, see the Anauseam documentation. It covers the design constraints and breaks down the individual stages of the circuit.
You can also view the schematic and PCB layout visually on CADLAB.io.
This microphone outputs a line-level voltage to reduce noise susceptibility, even when using an unshielded TS cable.
Main components on the JLI-2555-tin can mic
JLI-2555-tin can mic bill of materials (BOM)
24 components, 18 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | OPA134PA OPA134 Texas Instruments | DIP-8_W7.62mm_Socket | U1 |
| 1 | TL072BCP TL072 Texas Instruments | DIP-8_W7.62mm_Socket | U2 |
| 1 | SJ1-3513 Same Sky | CUI_SJ1-3513 | J1 |
| 1 | 1294 9v Keystone Electronics | BAT_1294 | BT2 |
| 1 | JLI-2555BXZ3-GP JLI2555 JLI Electronics | SolderWire-0.1sqmm_1x02_P3.6mm_D0.4mm_OD1mm | MK1 |
| 1 | PTN16-A100120K1A1 100k Same Sky | POT_PTN16-A100120K1A1 | POT1 |
| 1 | K220J15C0GF5TL2 22pF Vishay BC Components | C_Disc_D5.0mm_W2.5mm_P2.50mm | C1 |
| 1 | ECE-A1AN220U 22uF Panasonic | C_Disc_D5.0mm_W2.5mm_P2.50mm | C2 |
| 1 | ECE-A1EN100U 10u Panasonic | CP_Radial_D5.0mm_P2.00mm | C3 |
| 1 | 860010272005 100u Würth Elektronik | WCAP-ATG8_5X11_DXL_ | C4 |
| 3 | K104K15X7RF5TL2 0u1 Vishay BC Components | C_Disc_D5.0mm_W2.5mm_P2.50mm | C5, C6, C8 |
| 2 | ESK476M025AC3FA 47uF KEMET | CP_Radial_D5.0mm_P2.00mm | C7, C9 |
| 1 | RGP0207CHK1G0 1G TE Connectivity | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R1 |
| 2 | CF14JT1K00 1k Stackpole Electronics | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R2, R4 |
| 1 | CF14JT39K0 39k Stackpole Electronics | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R3 |
| 1 | CF14JT100R 100 Stackpole Electronics | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R5 |
| 2 | CF14JT100K 100k Stackpole Electronics | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R6, R7 |
| 2 | CF14JT47R0 47 Stackpole Electronics | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R8, R9 |
JLI-2555-tin can mic design files
The KiCad project lives in the anauseam/JLI-2555-tin-can-mic repository on GitHub; these links point at the commit this page was built from.
JLI-2555-tin can mic: common questions
How big is the JLI-2555-tin can mic PCB?
The JLI-2555-tin can mic measures 80 × 70 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the JLI-2555-tin can mic?
24 components, from 18 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 JLI-2555-tin can mic design files?
From the anauseam/JLI-2555-tin-can-mic 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 JLI-2555-tin can mic design in my own project?
Yes, under the terms of its MIT license, which anauseam chose for the repository.