bits resolution ksps Successive approximation architecture Rail-to-rai
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ADC002 Successive Approximation Converter
bits resolution ksps Successive approximation architecture Rail-to-rail operation 24mW power Requires external reference voltage (0.5µ) double-poly processes Description
10-bit successive approximation (double-poly) process. input buffer used allow conversion signals within 50mV either power rail. Power consumption with input buffer 4.8mA, without buffer 2.5mA maximum. converter takes clock cycles from "start conversion" "data ready." reference voltage determines input voltage range varied from power rail.
Performance Features
Performance Features
Voltage supply Operating current External reference voltage range Input range clock rate Maximum resolution Conversion time
Value
5Volts+/-10% 4.8mA 2V-5V 50mV Vref 2.5Mhz bits
Block Diagram
Successive Approximation Register Control Logic
Data_Out[9:0]
Capacitor Array
Semiconductor www.amis.com
ADC002 Successive Approximation Converter
Datasheet Notes
successive approximation requires clock cycles convert input signal. input sampled during first clock cycles. next clock cycles convert time starting from LSB. output data ready after 12th cycle, rising edge 13th cycle. conversion started driving "start" high rising edge clock. conversion complete rising edge "done." highest voltage that converted reference voltage (which limited upper power supply range). input voltage range 50mV reference voltage. converter used with without input buffer buffer highly recommended high capacitance capacitor array. Approximately half power dissipated input buffer.
Semiconductor www.amis.com
2002 Semiconductor, Inc. Semiconductor makes warranty products, other than those expressly contained company's standard warranty contained Semiconductor's Terms Conditions. company assumes responsibility errors which appear this document, reserves right change devices specifications detailed herein time without notice, does make commitment update information contained herein. licenses patents other intellectual property Semiconductor granted company connection with sale Semiconductor products, expressly implication.
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