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ADC10664CIN
10-Bit 360 ns A/D Converter with Input Multiplexer and Sample/Hold
ADC10662/ADC10664
10-Bit 360 ns A/D Converter with Input Multiplexer and
Sample/Hold
General DescriptionUsingan innovative, patented multistep* conversion tech-
nique, the 10-bit ADC10662 and ADC10664 are2- and
4-input CMOS analog-to-digital converters offering
sub-microsecond conversion times yet dissipatinga maxi-
mumof only 235 mW. The ADC10662 and ADC10664 per-
forma 10-bit conversionin two lower-resolution “flashes”,
thus yieldinga fast A/D withoutthe cost, power dissipation,
and other problems associated with true flash approaches. additionto standard static performance specifications
(Linearity, Full-Scale Error, etc.) dynamic performance (THD,
S/N)is guaranteed.
The analog input voltagetothe ADC10662 and ADC10664is
sampled and heldbyan internal sampling circuit. Input sig-
nalsat frequencies fromdcto over 250 kHz can thereforebe
digitized accurately without the need for an external
sample-and-hold circuit.
The ADC10662 and ADC10664 includea “speed-up” pin.
Connectingan external resistor between thispin and ground
reducesthe typical conversion timetoas littleas 360ns.
For easeof interfaceto microprocessors,the ADC10662 and
ADC10664 have been designedto appearasa memory
locationor I/O port without the needfor external interface
logic.
Features Built-in sample-and-hold Single +5V supply2-or 4-input multiplexer options No external clock required
Key Specifications Conversion timeto10 bits: 360ns typical, 466ns
max over temperature Sampling Rate: 1.5 MHz (min) Low power dissipation: 235 mW (max) Total harmonic distortion (50 kHz): −60dB (max) No missing codes over temperature
Applications Digital signal processor front ends Instrumentation Disk drives Mobile telecommunications
Ordering Information
ADC10662
Industrial
(−40˚C≤
TA≤
+85˚C) PackageADC10662CIWM M24B Small Outline
ADC10664
Industrial
(−40˚C≤
TA≤
+85˚C) PackageADC10664CIWM M28B Small Outline
November 2001
ADC10662/ADC10664
10-Bit
A/D
Converter
with
Input
Multiplexer
and
Sample/Hold
