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ADV7202 Datasheet(PDF) 1 Page - Analog Devices |
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ADV7202 Datasheet(HTML) 1 Page - Analog Devices |
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1 / 26 page  REV. PrB Preliminary Technical Data PRELIMINARY TECHNICAL DATA Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. a ADV7202 One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781/329-4700 www.analog.com Fax: 781/326-8703 © Analog Devices, Inc., 2002 Simultaneous Sampling Video Rate Codec FUNCTIONAL BLOCK DIAGRAM AIN1P D/A ADC LOGIC 12C/SPI I/P MUX MUX SHA AND CLAMP SHA AND CLAMP SHA AND CLAMP A/D A/D AIN1M AIN2P AIN2M AIN3P AIN3M AIN4P AIN4M AIN5P AIN5M AIN6P AIN6M 8-BIT 843KHz ADC BLOCK 12-BIT 10-BIT D/A 10-BIT D/A 10-BIT D/A 10-BIT DAC LOGIC ADV7202 XTAL DOUT [9:0] DAC DATA [9:0] OSD I/P "S" DAC0 DAC1 DAC2 DAC3 FEATURES Four 10-Bit Video DACs (4:2:2, YCrCb, RGB I/P Supported) 10-Bit Video Rate Digitization at Up to 54 Mhz AGC Control ( 6 dB) Front-End 3-Channel Clamp Control Up to Five CVBS Input Channels, Two Component YUV, Three S-Video, or a combination of the above. Simul- taneous Digitization of Two CVBS Input Channels. Aux 8-Bit SAR ADC @ 843 kHz Sampling Giving up to Eight General Purpose Inputs I2C and SPI Compatible Interface with I2C Filter RGB Inputs for Picture-on-Picture of the RGB DACs APPLICATIONS Picture-on-Picture Video Systems Simultaneous Video Rate Processing Hybrid Set-Top Box TV Systems Direct Digital Synthesis/I-Q Demodulation Image Processing GENERAL DESCRIPTION The ADV7202 is a video rate sampling Codec. It has the capability of sampling up to five NTSC/PAL/SECAM video I/P signals. The resolution on the front-end digitizer is 12 bits; 2 bits (12 dB) are used for gain and offset adjustment. The digitizer has a conversion rate of 54 MHz. It also has up to eight auxiliary inputs that can be sampled by an 843 kHz SAR ADC for system monitoring, etc. The back end consists of four 10-bit DACs that run at up to 54 MHz and can be used to output CVBS, S-Video, Component YCrCb, and RGB. This Codec also supports Picture-on-Picture with the 3-channel I/P mux that also muxes to the DAC O/Ps. The ADV7202 can operate at 3.3 V or 5 V. Its monolithic CMOS construction ensures greater functionality with lower power dissipation. The ADV7202 is packaged in a small 64-lead LQFP package. |
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