NOTE: The ADC10662 is obsolete. It is described here for
Using an innovative, patented multistep (U.S. Patent Number 4918449) conversion
technique, these 10-bit CMOS analog-to-digital converters offer sub-microsecond conversion times
yet dissipating a maximum of only 235 mW. These converters perform 10-bit conversions in two
lower-resolution “flashes”, yielding a fast A/D without the cost, power consumption, and other
problems associated with true flash approaches. In addition to standard static performance
specifications (Linearity, Full-Scale Error, etc.), dynamic performance (THD, S/N) is
The analog input voltage ADC is sampled and held by an internal sampling circuit. Input
signals at frequencies from DC to over 250 kHz can therefore be digitized accurately without the
need for an external sample-and-hold circuit.
Connecting an external resistor between the “speed-up” pin and ground reduces the typical
conversion time to as little as 360 ns for a small linearity sacrifice.
For ease of interface to microprocessors, the ADC10662 and ADC10664 have been designed to
appear as a memory location or I/O port without the need for external interface logic.
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