SPT7852

• 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 Supplywith Option for 3.3 V Digital Outputs
• Tri-State, TTL-Compatible Outputs
• Overrange Bit
• Selectable Two's Complement or Straight Binary Output

• Video Set-Top Boxes
• Cellular Base Stations
• QPSK/QAM RF Demodulation
• S-Video Digitizers
• Composite Video Digitizers
• Portable and Handheld Instrumentation

The SPT7852 has two 10-Bit CMOS analog-to-digital con-verters that can sample data at speeds up to 20 MSPS.Ithas excellent low noise performance with a very low typicalpower dissipation of only 160 mW-thats the total powerfor both converters.The SPT7852 uses a dual configurationof the proprietary circuit design found in our 10-bit CMOSsingle converter family,to achieve its high performance in aCMOS process.

The SPT7852 is specifically designed for video decodingapplications and is ideal for S-video decoding and decodingof multiple composite video sources. It also has excellentapplication in the area of coherent I/Q demodulation in suchapplications as QAM demodulation and TV set-top box con-
verters.

Inputs and outputs are TTL/CMOS-compatible to interfacewith TTL/CMOS-logic systems. Output data format is select-able for either straight binary or two's complement. TheSPT7852 is available in a 44L TQFP package in commercialand industrial temperature ranges. It is also available in die
form. For availability of extended temperature ranges,please contact the factory.