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SPT7722

Fairchild Semiconductor
Part Number SPT7722
Manufacturer Fairchild Semiconductor
Description 8-bit / 250 MSPS A/D Converter with Demuxed Outputs
Published Sep 27, 2005
Detailed Description www.fairchildsemi.com SPT7722 8-bit, 250 MSPS A/D Converter with Demuxed Outputs Features • • • • • • • • • TTL/CMOS/PE...
Datasheet PDF File SPT7722 PDF File

SPT7722
SPT7722

Overview
www.
fairchildsemi.
com SPT7722 8-bit, 250 MSPS A/D Converter with Demuxed Outputs Features • • • • • • • • • TTL/CMOS/PECL input logic compatible High conversion rate: 250 MSPS Single +5V power supply Very low power dissipation: 425mW 350 MHz full power bandwidth Power-down mode: 24mW +3.
0V/+5.
0V (LVCMOS) digital output logic compatibility Single/demuxed output ports selectable Improved replacement for AD9054 Description The SPT7722 is a high-speed, 8-bit analog-to-digital converter implemented in an advanced BiCMOS process.
It is a performance-enhanced version of the SPT7721, offering better linearity and dynamic performance.
An advanced folding and interpolating architecture provides both a high conversion rate and very low power dissipation of only 425mW.
The analog inputs can be operated in either single-ended or differential input mode.
A 2.
5V common mode reference is provided on chip for the single-ended input mode to minimize external components.
The SPT7722 digital outputs are demuxed (double-wide) with both dual-channel and single-channel selectable output modes.
Demuxed mode supports either parallel aligned or interleaved data output.
The output logic is both +3.
0V and +5.
0V compatible.
The SPT7722 is available in a 44-lead TQFP surface mount package over the industrial temperature range of -40°C to +85°C.
Applications • • • • • RGB video processing Digital communications High-speed instrumentation Digital Sampling Oscilloscopes (DSO) Projection display systems Block Diagram AGND DGND AVCC OVDD VIN+ VIN– 8-Bit 250 MSPS ADC CLK CLK Data Output Latches DA0–DA7 DB0–DB7 Common Mode Voltage Reference Data Output Mode Control 2 2 DCLKOUT DCLKOUT +2.
5 V VCM PD CLK CLK Reset DMODE1,2 & Reset Rev.
1.
0.
2 December 2002 DATA SHEET SPT7722 Absolute Maximum Ratings Parameter Supply Voltages AVCC OVDD Input Voltages Analog Inputs Digital Inputs Temperature Operating Temperature Storage Temperature (beyond which damage may occur)1 25°C Min.
Max.
+6 +6 ...


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