Phase-Locked-Loop
About the Phase-Locked-Loop PCB
Phase-Locked-Loop is an open source PCB design by SohithTondepu, published on GitHub. It is a 2-layer board measuring 51 × 54 mm, with 15 components from 13 distinct parts.
Other key parts include the CD74HCT86E, LM324N, CD74HCT74E and NE555P. By type, the board carries 5 ICs, 3 transistors, 3 capacitors, 2 connectors and 2 resistors.
From the project
This repository contains the complete design and implementation of a basic Phase-Locked Loop (PLL) circuit, referred to as PLL1. The project was developed using KiCad for schematic capture and PCB layout, and includes all the necessary files for fabrication and assembly. Before f
This repository contains the complete design and implementation of a basic Phase-Locked Loop (PLL) circuit, referred to as PLL1. The project was developed using KiCad for schematic capture and PCB layout, and includes all the necessary files for fabrication and assembly. Before finalizing the PCB, the circuit was first tested on a perfboard to verify its functionality. Once validated, the PCB was fabricated and components were soldered manually.
Main components on the Phase-Locked-Loop
Phase-Locked-Loop bill of materials (BOM)
15 components, 13 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | CD74HCT86E | N14 | U1 |
| 1 | LM324N | N14 | U2 |
| 2 | CD74HCT74E | N14 | U3, U4 |
| 1 | NE555P | DIP-8_W7.62mm | U5 |
| 1 | BC547 | TO-92_Inline | Q1 |
| 2 | BC557 | TO-92_Inline | Q2, Q3 |
| 1 | CONN_01X02_PIN Conn_01x02_Pin | PinHeader_1x02_P2.00mm_Vertical | J1 |
| 1 | CONN_01X03_PIN Conn_01x03_Pin | PinHeader_1x03_P2.00mm_Vertical | J2 |
| 1 | 0.1UF 0.1uf | CP_Radial_D8.0mm_P3.80mm | C1 |
| 1 | 10NF 10nf | CP_Radial_D8.0mm_P5.00mm | C2 |
| 1 | 0.1UF 0.1uf | CP_Radial_D8.0mm_P3.50mm | C3 |
| 1 | 2.2K 2.2k | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R1 |
| 1 | 2k | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R2 |
Phase-Locked-Loop design files
The KiCad project lives in the SohithTondepu/Phase-Locked-Loop repository on GitHub; these links point at the commit this page was built from.
- Layoutsrc/pll1.kicad_pcb
- Schematicsrc/pll1.kicad_sch
- BOMoutput/BOM.csv
Phase-Locked-Loop: common questions
How big is the Phase-Locked-Loop PCB?
The Phase-Locked-Loop measures 51 × 54 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Phase-Locked-Loop?
15 components, from 13 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 Phase-Locked-Loop design files?
From the SohithTondepu/Phase-Locked-Loop 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 Phase-Locked-Loop design in my own project?
The repository has no license, so all rights stay with SohithTondepu. Use it as a reference, and ask the author before reusing the design.