LM1267 is an integrated CMOS CRT pre-amplifier with I2C compatible interface and comprehensive video signal parameter control. It can directly set up and adjust the gain and contrast of the CRT display. The LM1267 pre-amplifier works in cooperation with the LM246X high gain driver family, allowing control of brightness and bias through DAC outputs, and is well matched with the LM2479 and LM2480 integrated bias clamp IC.
The LM1267 is an integrated CMOS pre‑amplifier designed for CRT displays. It provides I²C‑compatible control of gain, contrast, brightness and black‑level, and works with the LM246X driver family. The device is packaged in a 24‑lead DIP.
Key features include a programmable bandwidth of 110 MHz to 150 MHz, four external 8‑bit DACs for bias and brightness control, a power‑save mode that reduces consumption by 80 %, and extensive OSD functionality with selectable video or OSD inputs.
| Programmable Bandwidth | 110 MHz to 150 MHz |
|---|---|
| Video Output Amplitude | 2 Vp‑p |
| External DAC Count | 4 (8‑bit) |
| Power‑Save Mode Reduction | 80 % power reduction |
The LM1267 can be programmed for a bandwidth up to 150 MHz.
It has four external 8‑bit DACs that provide bus‑controlled bias and brightness adjustments.
The device includes a Power Save (Green) Mode that reduces power consumption by 80 %.