adc1251cmj National Semiconductor Corporation, adc1251cmj Datasheet
adc1251cmj
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adc1251cmj Summary of contents
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... Digital signal processing Y High resolution process control Y Instrumentation Y Connection Diagram Ordering Information b ( ADC1251BIJ ADC1251CIJ TL H 11024 – ADC1251CMJ ADC1251CMJ 883 December 1994 a 5V reference 12 bits plus sign 8 ms (max) 83 kHz (max LSB ( 0 0146%) (max LSB (max LSB (max ...
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... REF REF C Analog Input Capacitance IN V Analog Input Voltage IN Power Supply Sensitivity Zero Error (Note 14) AV Operating Ratings (Notes 1 2) Temperature Range ADC1251BIJ ADC1251CIJ ADC1251CMJ ADC1251CMJ 883 and AV Voltage (Notes 3V) CC Negative Supply Voltage (V Reference Voltage ...
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Converter Electrical Characteristics The following specifications apply for MHz unless otherwise specified Boldface limits apply for T (Notes 6 7 and 8) Symbol Parameter DYNAMIC CHARACTERISTICS Unipolar Signal-to-Noise Distortion Ratio ...
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AC Electrical Characteristics The following specifications apply for Boldface limits apply for Symbol Parameter f Clock Frequency CLK Clock Duty Cycle t Conversion Time Using Start a Conversion t ...
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... Note 17 The specifications for these parameters are valid after an Auto-Cal cycle has been completed Note 18 The ADC1251 reference ladder is composed solely of capacitors Note 19 A Military RETS Electrical Test Specification is available on request At time of printing the ADC1251CMJ 883 RETS specification complies fully with the boldface limits in this column ...
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Electrical Characteristics (Continued) FIGURE 1b Simplified Error Curve vs Output Code without Auto-Cal or Auto-Zero Cycles FIGURE 1c Simplified Error Curve vs Output Code after Auto-Cal Cycle Typical Performance Characteristics Zero Error Change vs Ambient Temperature Zero Error vs V ...
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Typical Performance Characteristics Linearity Error vs Clock Frequency Bipolar Signal-to- a Noise Distortion Ratio vs Input Frequency Bipolar Signal-to- a Noise Distortion Ratio vs Input Signal Level Bipolar Spectral Response with 20 kHz Sine Wave Input (Continued) Bipolar Signal-to- Full ...
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Typical Performance Characteristics Unipolar Spectral Response with 10 kHz Sine Wave Input Test Circuits FIGURE 2 TRI-STATE Test Circuits and Waveforms (Continued) Unipolar Spectral Response with 20 kHz Sine Wave Input TL H 11024 – 11024 – ...
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Timing Diagrams Using WR Control to Start a Conversion with Auto-Zero (CAL Auto-Cal Cycle 11024 – 11024 – 17 ...
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Timing Diagrams (Continued) Using WR Control to Start a Conversion without Auto-Zero (CAL Using S H Control to Start a Conversion without Auto-Zero ( CAL 11024 – 18 ...
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Pin Descriptions DV (24) The digital and analog positive power supply CC AV (4) pins The digital and analog power supply CC voltage range of the ADC1251 guarantee accuracy it is required that ...
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Functional Description A conversion sequence can also be controlled by the S H and CS inputs Taking CS and S H low starts the acquisition window for the analog input voltage The rising edge immediately ...
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Analog Considerations FIGURE 4 Low Drift Extremely Stable Reference Circuit In a ratiometric system the analog input voltage is propor- tional to the voltage used for the A D reference When this voltage is the system power supply ...
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Analog Considerations 3 5 INPUT BYPASS CAPACITORS An external capacitor can be used to filter out any noise due to inductive pickup by a long input lead and will not degrade the accuracy of the conversion result 3 ...
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Dynamic Performance Two sample hold specifications aperture time and aperture jitter are included in the Dynamic Characteristics table since the ADC1251 has the ability to track and hold the analog input voltage Aperture time is the delay for ...
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... Physical Dimensions inches (millimeters) Order Number ADC1251CMJ ADC1251CMJ 883 ADC1251BIJ or ADC1251CIJ LIFE SUPPORT POLICY NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF NATIONAL SEMICONDUCTOR CORPORATION As used herein 1 Life support devices or systems are devices or ...