LM1267 150 MHz I2C Compatible RGB Video Amplifier System with OSD and DACs
The LM1267 is an integrated CMOS pre‑amp designed for CRT displays. It provides programmable bandwidth from 110 MHz to 150 MHz, full video‑signal parametric control, and four external 8‑bit DACs for bias and brightness adjustment. The device works with the LM246X driver family and includes a power‑save mode that reduces consumption by 80 %.
The datasheet lists absolute maximum ratings, operating limits, electrical characteristics for active video, OSD, DAC and interface signals, as well as pin descriptions, timing diagrams, register definitions, and physical dimensions. Contact information for National Semiconductor regional support is also provided.
| Bandwidth | 110 MHz to 150 MHz |
|---|---|
| Package | 24‑lead DIP molded plastic |
| Input Voltage Range | -0.5 V to +0.7 V |
| Video Output Amplitude | 2 Vpp |
| Power‑Save Mode Reduction | 80 % power reduction |
The LM1267 can be programmed for a bandwidth up to 150 MHz.
It includes four 8‑bit external DACs for bus‑controlled bias and brightness.
The Power Save (Green) mode reduces power consumption by 80 %.
The device is supplied in a 24‑lead DIP molded plastic package.