ADC10061 Datasheet | National Semiconductor

Description Using an innovative, patented multistep- conversion technique, the 10-bit ADC10061, ADC10062, and ADC10064 CMOS analog-to-digital converters offer sub-microsecond conversion times yet dissipate a maximum of only 235 m W. The ADC10061, ADC10062, and ADC10064 perform a 10-bit conversion in two lower-resolution “flashes”, thus yielding a fast A/D without the cost, power dissipation, and other problems associated with true flash approaches. The ADC10061 is pin-patible with the ADC1061 but much faster, thus providing a convenient upgrade path for the ADC1061. The analog input voltage to the ADC10061, ADC10062, and ADC10064 is sampled and held by an internal sampling circuit. Input signals at frequencies from dc to over 200 k Hz can therefore be digitized accurately without the need for an external sample-and-hold circuit. The ADC10062 and ADC10064 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 ADC10061, ADC10062, and ADC10064 have been designed to appear as a memory location or I/O port without the need for external interface logic. - U.S. Patent Number 4918449 Features n n n n n Built-in sample-and-hold Single +5V supply 1, 2, or 4-input multiplexer options No external clock required Speed adjust pin for faster conversions (ADC10062 and ADC10064). See ADC10662/4 for high speed guaranteed performance. Key Specifications n n n n n n 600 ns typical, 900 ns max over temperature Sampling Rate 800 k Hz Low power dissipation 235 m W (max) ± 1.0 LSB (max) Total unadjusted error No missing codes over temperature Conversion time to 10 bits Applications n n n n Digital signal processor front ends Instrumentation Disk drives Mobile telemunications Simplified Block Diagram DS011020-1 - ADC10061 Only - - ADC10062 and ADC10064 Only - - - ADC10064 Only TRI-STATE ® is a registered trademark...