Configure the resistor network used for VGA DACs. This tool computes the equivalent resistances and output voltages for each bit combination, estimates channel utilization against the 0.7 V VGA nominal full-scale (with +5% upper limit), and renders the color palette and its RGB color-space distribution.
DAC Model Selection
Circuit Diagram
Resistor Configuration (per channel)
Formulas
Equivalent resistance (both bits = 1):
\[R_{eq} = \frac{R_1 \times R_2}{R_1 + R_2}\]
Output voltage:
\[V_{out} = V_{in} \times \frac{R_L}{R_{eq} + R_L}\]
Global Settings
Voltages per bit combination
Example uses Red channel
| B1 (MSB) | B0 (LSB) | Req | Vout |
|---|
Levels Table (All Channels)
| Level (0–3) | Bits | V Red | V Green | V Blue | Color |
|---|
Generated Palette
Level:
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Voltage:
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RGB:
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