LM1269110 MHz I2C Compatible RGB Video Amplifier Systemwith OSD & DACsGeneral Des criptionThe LM1269 pre-amp is an integrated CMOS CRT pre-amp.The IC is I2C compatible, and allows control of all the parametersnecessary to directly setup and adjust the gain andcontrast in the CRT display. Brightness and bias can becontrolled through the DAC outputs, and is well matched tothe LM2479 and LM2480 integrated bias clamp IC.The LM1269 pre-amp is designed to work in cooperationwith the LM246X high gain driver family.Black level clamping of the signal is carried out directly onthe AC coupled input signal into the high impedance preamplifierinput, thus eliminating the need for additional blacklevel clamp capacitors.The IC is packaged in an industry standard 24-lead DIPmolded plastic package.