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SPT7721SIT
8-bit, 250 MSPS ADC with DeMuxed Outputs
SPT7721
8-BIT, 250 MSPS ADC WITH DEMUXED OUTPUTS
TECHNICAL DATANOVEMBER 8, 2001
GENERAL DESCRIPTIONThe SPT7721 is a high-speed, 8-bit analog-to-digital con-
verter implemented in an advanced BiCMOS process. An
advanced folding and interpolating architecture provides
both a high conversion rate and very low power dissipation
of only 310 mW. The analog inputs can be operated in
either single-ended or differential input mode. A 2.5 V com-
mon mode reference is provided on chip for the single-
ended input mode to minimize external components.
The SPT7721 digital outputs are demuxed (double-wide)
with both dual-channel and single-channel selectable out-
put modes. 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.
APPLICATIONS RGB video processing Digital communications High-speed instrumentation Projection display systems
FEA TURES 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
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