Double buffered, impedance matched, no vertical lines VGA adapter for all Amigas
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AMI-RGB2VGAPLUS is a "revised" RGB to VGA adapter for the Amiga A500-A600-A2000 and A1200-A4000, with unique improvements:
- Fully buffered Composite HSync and VSync signals
- Impedance matched inputs and outputs
- Fully high quality buffered video signals
- Fully filtered spurious input frequencies: no more vertical bars on LCD screens !
- Smaller than the original 390682-01/03 VGA dongle by commodore
The pcb can be fitted with either TI7316 (as in the BOM) or with TI7314 (or any other else 1:1 pin compatible video filter/amplifier chip, there are plenty of them on the market)
Both the 7314 and 7316 are virtually identical, except for the analog video “low-pass” filter.
7316 has a low pas filter with 36Mhz rolloff, which makes it best fitting for resolutions as up to 720p/1080i and AGA machines (if speaking of Commodore Amiga)
7314 has a low pas filter with 7,5Mhz rolloff, which makes it best fitting for lower resolutions and best fits OCS/ECS machines (but of course with some loss in details on higher resolutions)
Full schematics can be found here
Full RGB2VGAPLUS BOM and GERBER files can be freely downloaded. Also check PIck&Place report inside the Hardware directory, if needed