Ultralow Power SD Video Filter with Load Detection£ºADA4431-1

The ADA4431-1 is a fully integrated video reconstruction filter that combines excellent video specifications with low power consumption and an ultra low power disable, making it ideal for portable video filtering applications. The ADA4431-1 is able to detect whether a video load is present at the output, powering down the device when the load is disconnected.

The ADA4431-1 operates on single supplies as low as 2.5 V while providing the dynamic range required by the most demanding video systems. The on-board charge pump provides a virtual negative supply, allowing the video signal to be dc coupled and the back porch set to ground, while the sync pulse passes cleanly at 300 mV below ground.

The ADA4431-1 also provides an on-chip dc offset which allows the back porch to be set to ground without external components. Additionally the part has SAG correction, permitting smaller capacitor values to be used in applications with ac-coupled outputs.

The ADA4431-1 is available in a low-profile 16-lead LFCSP package and operates in the extended automotive temperature range of 40¡ãC to +85¡ãC.

Applications