AVI1861
About the AVI1861 PCB
AVI1861 is an open source PCB design by dmadole, published on GitHub under the GPL-2.0 license. It is a 2-layer board measuring 29.9 × 17.2 mm, with 9 components from 8 distinct parts.
Other key parts include the LINE, FRAME, 4014, 4040 and 74LVC1G17. By type, the board carries 6 ICs, 2 capacitors and 1 connector.
From the project
An update of the AVI1861 drop-in replacement for the CDP1861
Note: I have found in testing that a 74HC4040 works consistently well where the CD4040 previously specified may require parts to be hand-picked, so I have changed the BOM to the HCMOS part. I have also updated the FRAME PLD code to output a 8-line-wide vertical sync pulse instead of 16 lines as, while this is different than the CDP1861, it does improve display quality on some analog monitors and I don't think hurts anything. I am calling this revision B1 as there is no circuit board change.
Main components on the AVI1861
AVI1861 bill of materials (BOM)
9 components, 8 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | LINE | TSSOP-24_4.4x7.8mm_P0.65mm | U1 |
| 1 | FRAME | TSSOP-24_4.4x7.8mm_P0.65mm | U2 |
| 1 | 4014 | TSSOP-16_4.4x5.0mm_P0.65mm | U3 |
| 1 | 4040 | TSSOP-16_4.4x5.0mm_P0.65mm | U4 |
| 1 | 74LVC1G17 | SOT-23-5 | U5 |
| 1 | 74LVC2G07 | SOT-23-6 | U6 |
| 1 | 1861 | DIP-24_W15.24mm | J1 |
| 2 | 0.22u | C_0805_2012Metric | C1, C2 |
AVI1861 design files
The KiCad project lives in the dmadole/AVI1861 repository on GitHub; these links point at the commit this page was built from.
- LayoutAVI1861.kicad_pcb
- SchematicAVI1861.kicad_sch
AVI1861: common questions
How big is the AVI1861 PCB?
The AVI1861 measures 29.9 × 17.2 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the AVI1861?
9 components, from 8 distinct parts. The full bill of materials is listed on this page.
Where can I download the AVI1861 design files?
From the dmadole/AVI1861 repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the AVI1861 design in my own project?
Yes, under the terms of its GPL-2.0 license, which dmadole chose for the repository.