ADV7180WBCPZ

The ADV7180WBCPZ is an advanced Linear-Video Processing device from Analog Devices. This device is an Video-to-RGB (VTRX) decoder that is capable of digitizing video decodedCVBS signal. This device is capable of producingtrue 24 bit color depthfrom NTSC and PAL signal representing on an 18-bit bus. Additionally, the device is also capable of producing an S-Video type input, with the capability of generating an 18-bitCCIR661column data output.

The ADV7180WBCPZ is capable of supporting both PAL and NTSC signal inputs. It supports luminance ranging from 64 IRE (-15mV, White) to 9.2 IRE (-2.1mV, Black) and, chrominance ranging from 148 mV (PAL, 100%) to 64 mV (PAL, 0%). Other key features of this device include, clamping and blanking, automatic field detection and frame detection, composite sync detection and HD/SD outputmode selection. Moreover, the device is highly integrated, with all the requiredvideo format conversion and signal processing functions combined into a single integrated circuit.

The working principle of the ADV7180WBCPZ is based on thedecoding of CVBS signals into Red/Green/Blue signal components. These components are then processed to generate and control the output YUV signal. First, the device analyzes and decodes the CVBS signal, converting it into its separate red, green, andblue components.Next, luminance gain, blanking, and clamping are preformed on the signal provided by the CVBS decoder. The output brightness and contrast, as well as the synchronization of the RGB output is all managed in this step.

The device then preforms color conversion and scaling. This procedure converts the 8BitRGB signal into YUV components as a 10Bit signal. An internal re-sampler is also implemented to obtain the 18Bit output data that matches to the frame buffer in the TV sets. The device also supports YUV444, YUV422and YUV C format, which allows the user to use multiple formats depending on the application. Finally, the device provides an output to display the corresponding channel.The working principle of the ADV7180WBCPZ is relatively simple, yet it is extremely useful in many Linear-Video Processing applications such as television sets, personal computers, display monitors, and industrial video equipment.

In conclusion, the ADV7180WBCPZ is a highly integrated and advanced Linear-Video Processing device from Analog Devices. This device offers many features such as NTSC and PAL signal support, luminance and chrominance range from 64IRE to 148 mV, automatic field detection and frame detection etc. Additionally, it also offers simple and robust working principle to decode CVBS signals into RGB and then to YUV signal. This makes it highly suitable for many video applications like television sets, PC monitors, and industrial video equipment.