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ADC10321 Datasheet(PDF) 1 Page - National Semiconductor (TI) |
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ADC10321 Datasheet(HTML) 1 Page - National Semiconductor (TI) |
1 / 16 page ADC10321 10-Bit, 20MSPS, 98mW A/D Converter with Internal Sample and Hold General Description The ADC10321 is a low power, high performance CMOS analog-to-digital converter that digitizes signals to 10 bits resolution at sampling rates up to 25Msps while consuming a typical 98mW from a single 5V supply. Reference force and sense pins allow the user to connect an external refer- ence buffer amplifier to ensure optimal accuracy. No missing codes is guaranteed over the full operating temperature range. The unique two stage architecture achieves 9.2 Effec- tive Bits with a 10MHz input signal and a 20MHz clock fre- quency. Output formatting is straight binary coding. To ease interfacing to 3V systems, the digital I/O power pins of the ADC10321 can be tied to a 3V power source, making the outputs 3V compatible. When not converting, power con- sumption can be reduced by pulling the PD (Power Down) pin high, placing the converter into a low power standby state, where it typically consumes less than 4mW. The ADC10321’s speed, resolution and single supply operation makes it well suited for a variety of applications in video, im- aging, communications, multimedia and high speed data ac- quisition. Low power, single supply operation ideally suit the ADC10321 for high speed portable applications, and its speed and resolution are ideal for charge coupled device (CCD) input systems. The ADC10321 comes in a space saving 32-pin TQFP and operates over the industrial (−40˚C ≤ T A ≤ +85˚C) tempera- ture range. Features n Internal Sample-and-Hold n Single +5V Operation n Low Power Standby Mode n Guaranteed No Missing Codes n Tri-State Outputs n TTL/CMOS or 3V Logic Input/Output Compatible Key Specifications n Resolution 10 Bits n Conversion Rate 20 Msps n ENOB 10MHz Input 9.2 Bits (typ) n DNL 0.35 LSB (typ) n Conversion Latency 2 Clock Cycles n PSRR 56dB n Power Consumption 98mW (typ) n Low Power Standby Mode <4mW (typ) Applications n Digital Video n Communications n Document Scanners n Medical Imaging n Electro-Optics n Plain Paper Copiers n CCD Imaging Connection Diagram DS100897-1 January 2000 © 2000 National Semiconductor Corporation DS100897 www.national.com |
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