The ADD8708 is an 18-channel integrated gamma reference for use in high resolution LCD TV and monitors panels. The output buffers feature high current drive and low offset voltage to provide an accurate and stable gamma curve.
The ADD8708 is an 18‑channel integrated gamma buffer designed for high‑resolution LCD TV and monitor panels. It features mask‑programmable gamma resistors with 0.2 % resolution, 0.1 % accuracy, and a built‑in voltage regulator with 0.4 % accuracy. The top nine channels swing to Vop while the lower nine swing to GND, providing a single‑supply operation from 7.5 V to 16.5 V and a gamma current drive of 15 mA per channel.
The device is supplied in 48‑lead Pb‑free LQFP and LFCSP packages and is rated for operation from –40 °C to +105 °C. Electrical characteristics include peak output current of 150 mA, detailed pin configurations, and typical performance curves. Ordering information, tap‑point selection forms, and package dimensions are provided for design integration.
| Number of channels | 18 |
|---|---|
| Gamma resolution | 0.2 % |
| Gamma accuracy | 0.1 % |
| Regulator accuracy | 0.4 % |
| Supply voltage range | 7.5 V to 16.5 V (single‑supply) |
| Gamma current drive per channel | 15 mA |
| Peak output current | 150 mA |
| Package types | 48‑lead LQFP and LFCSP (Pb‑free) |
It operates from 7.5 V to 16.5 V with a single‑supply configuration.
The device provides 18 precision gamma reference outputs.
The gamma resistors offer 0.2 % resolution and 0.1 % accuracy.
It is offered in 48‑lead Pb‑free LQFP and LFCSP packages.