Aug 17, 2019 · I have an FPGA and want it to drive a VGA monitor. I want more than 3 bits of color so I need a DAC of some sort. So I want to make a resistor DAC. My plan is to have 3 …

Dec 26, 2019 · I'm trying to wrap my head around if this is how a R-2R DAC should work. I say should for two reasons: (1) because I think I understand the theory behind the resistor ladder …

Jun 27, 2022 · Why is there a 47 Ohm resistor connected to VSYNC (GPIO17) and HSYNC (GPIO16)? Generally, when we add such resistors, it is because we will drive "transmission …

This device is known as a variable gain amplifier (VGA), or programmable gain amplifier (PGA). In the case of voltage-controlled VGAs, it is common to make the gain in dB proportional to a

Jan 26, 2022 · The resistor is sometimes used to form a voltage divider, knocking TTL level sync down to 75-ohm csync. MiSTer outputs 75-ohm csync by default (no 180 ohm resistor needed …

Oct 24, 2011 · The optimum VGA DAC circuit (using 5% resistors) for each RGB pin is this: It outputs 0.7V when both DAC pins are high and has a 75-ohm output impedance. If Parallax …

Jun 20, 2018 · I'm attempting to build an R-2R resistor ladder DAC for a VGA output driven by 3.3 V bits. Because it's a VGA driving DAC, I have to ensure 2 things: The output voltage range is …

Sep 18, 2020 · VGA to component transcoders I'm trying to find a solution for connecting my PC to a CRT via component without an AMD video card (I know they're cheap but I just don't want …

How does the VGA resistor DAC work? Well that's what the theory section is meant to answer! VGA color signals: Red, Green and Blue are all internally terminated through the monitor with …

May 10, 2011 · There used to be R2R resistor networks available for this, and the resistors were more accurately matched than using individual resistors. With DAC's being so common and …