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SPT7852SIT Datasheet(PDF) 1 Page - Cadeka Microcircuits LLC. |
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SPT7852SIT Datasheet(HTML) 1 Page - Cadeka Microcircuits LLC. |
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1 / 11 page  SPT7852 DUAL 10-BIT, 20 MSPS, 160 mW A/D CONVERTER FEATURES • Dual 10-Bit/20 MSPS Analog-to-Digital Converter • Monolithic CMOS • Internal Track-and-Hold • Low Power Dissipation: 160 mW • 4 Vp-p Analog Input Range for Each ADC • Single +5 Volt Power Supply with Option for 3.3 V Digital Outputs • Tri-State, TTL-Compatible Outputs • Overrange Bit • Selectable Two’s Complement or Straight Binary Output APPLICATIONS • Video Set-Top Boxes • Cellular Base Stations • QPSK/QAM RF Demodulation • S-Video Digitizers • Composite Video Digitizers • Portable and Handheld Instrumentation Overrange DA0-9 Overrange DB0-9 ADCA Reference Ladder ADCB Timing Generation Output Buffer Output Buffer 10 10 VINB MSB Invert Clock Output Enable VINA Reference In Reset T/H T/H BLOCK DIAGRAM GENERAL DESCRIPTION The SPT7852 has two 10-Bit CMOS analog-to-digital con- verters that can sample data at speeds up to 20 MSPS. It has excellent low noise performance with a very low typical power dissipation of only 160 mW—that’s the total power for both converters. The SPT7852 uses a dual configuration of the proprietary circuit design found in our 10-bit CMOS single converter family, to achieve its high performance in a CMOS process. The SPT7852 is specifically designed for video decoding applications and is ideal for S-video decoding and decoding of multiple composite video sources. It also has excellent application in the area of coherent I/Q demodulation in such applications as QAM demodulation and TV set-top box con- verters. Inputs and outputs are TTL/CMOS-compatible to interface with TTL/CMOS-logic systems. Output data format is select- able for either straight binary or two’s complement. The SPT7852 is available in a 44L TQFP package in commercial and industrial temperature ranges. It is also available in die form. For availability of extended temperature ranges, please contact the factory. |
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