LM1269 110 MHz I2C compatible RGB video amplifier system with OSD & DACs
The LM1269 is an integrated CMOS CRT pre‑amplifier designed for 110 MHz bandwidth RGB video applications. It includes four external 8‑bit DACs for bias and brightness control, supports on‑screen‑display (OSD) functions, and is packaged in a standard 24‑lead DIP.
The document details absolute maximum ratings, operating limits, video and OSD electrical characteristics, DAC and I²C interface specifications, pin assignments, timing diagrams, and mechanical dimensions, enabling designers to implement the device in low‑cost monitor and display designs.
| Bandwidth | 110 MHz |
|---|---|
| Package | 24‑lead DIP |
| Supply Voltage (VCC) | 4.7 V – 5.25 V |
| Thermal Resistance to Case | 32 °C/W |
| Maximum Supply Current (Setting 1) | 205 mA |
| Video Output Swing | 2 Vp‑p |
| External DACs | Four 8‑bit DACs |
| Power Save Mode Reduction | 80 % power reduction |
The LM1269 provides a bandwidth of 110 MHz.
It has four external DACs, each 8‑bit.
The device operates with a supply voltage between 4.7 V and 5.25 V.
Thermal resistance to case is specified as 32 °C/W.