Fairchild Semiconductor SPT7721
The SPT7721 is a high-speed, 8-bit analog-to-digital converter implemented in an advanced BiCMOS process. The analog inputs can be operated in either single-ended or differential input mode. The SPT7721 digital outputs are demuxed (double-wide) with both dual-channel and single-channel selectable output modes.FEATURES
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● TTL/CMOS/PECL compatible High conversion rate: 250 MSPS Single +5 V power supply Very low power dissipation: 310 mW Power-down mode +3.0 V/+5.0 V (LVCMOS) digital output logic compatibility
● Demuxed output ports
APPLICATIONS
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● RGB video processing Digital communications High-speed instrumentation Projection display systems
GENERAL DESCRIPTION
An advanced folding and interpolating architecture provides both a high conversion rate and very low power dissipation of only 310 mW. A 2.5 V common mode reference is provided on chip for the singleended input mode to minimize external components. Demuxed mode supports either parallel aligned or interleaved data output. The output logic is both +3.0 V and +5.0 V compatible. The SPT7721 is available in a 44-lead TQFP surface mount package over the industrial temperature range of –40 to +85 °C. BLOCK DIAGRAM AGND DGND AVCC OVDD VIN+ VIN 8-Bit 250 MSPS ADC CLK CLK Data Output Latches DA0DA7 DB0DB7 Common Mode Voltage R...