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ADC10462CIWM Datasheet(PDF) 1 Page - National Semiconductor (TI) |
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ADC10462CIWM Datasheet(HTML) 1 Page - National Semiconductor (TI) |
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1 / 17 page  ADC10461/ADC10462/ADC10464 10-Bit 600 ns A/D Converter with Input Multiplexer and Sample/Hold General Description NOTE: The ADC10461 and ADC10462 are obsolete. They are described here for reference only. Using an innovative, patented multistep* conversion tech- nique, these 10-bit CMOS analog-to-digital converters offer sub-microsecond conversion times yet dissipate a maximum of only 235 mW. These converters perform 10-bit conversion in two lower-resolution “flashes”, yielding a fast A/D without the cost, power consumption, and other problems associ- ated with true flash approaches. Dynamic performance (THD, S/N) is guaranteed. The analog input voltage is sampled and held by an internal sampling circuit. Input signals at frequencies from DC to over 200 kHz can, therefore, be digitized accurately without the need for an external sample-and-hold circuit. The ADC10462 and ADC10464 include a “speed-up” pin. Connecting an external resistor between this pin and ground reduces the typical conversion time to as little as 350 ns with only a small increase in linearity error. For ease of interface to microprocessors, the ADC10461, ADC10462, and ADC10464 have been designed to appear as a memory location or I/O port without the need for exter- nal interface logic. Features n Built-in sample-and-hold n Single +5V supply n No external clock required n Speed adjust pin for faster conversions (ADC10462 and ADC10464) Key Specifications n Conversion Time 600 ns (typical) n Sampling Rate 800 kHz n Low Power Consumption 235 mW (max) n Total Harmonic Distortion (50 kHz) −60 dB (max) n No Missing Codes Over Temperature Applications n Digital signal processor front ends n Instrumentation n Disk drives n Mobile telecommunications Note: *U.S. Patent Number 4918449 Simplified Block Diagram 01110809 *ADC10461 Only **ADC10462 and ADC10464 Only ***ADC10464 Only April 2006 © 2006 National Semiconductor Corporation DS011108 www.national.com |
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