The LM1886 is a TV video matrix D to A converter which encodes luminance and color difference signals from 3-bit red, green and blue inputs. The luminance output is encoded from the NTSC equation Y = 0.3R + 0.59G + 0.11 Band the R-Y and B-Y outputs are weighted to prevent over modulation. A built-in R-Y and burst gate polarity switch al low European PAL compatible signals to be encoded. All output levels including an RF 0 Carrier Bias Voltage have been referenced to 5V for direct connection to the LM1889 TV video modulator. When used in combination with the LM1889 and a suitable sync generator, 3-bit, R, G and B information may be encoded to both composite video and RF channel carrier.
