adc12062biv National Semiconductor Corporation, adc12062biv Datasheet
adc12062biv
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adc12062biv Summary of contents
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... When the converter is not digitizing signals it can be placed in the Standby mode typical power consumption in this mode is 100 mW Block Diagram Ordering Information b Industrial ( 40 C ADC12062BIV ADC12062BIVF ADC12062CIV ADC12062CIVF ADC12062EVAL TRI-STATE is a registered trademark of National Semiconductor Corporation C 1995 National Semiconductor Corporation TL H 11490 Features Built-in sample-and-hold ...
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... CC Storage Temperature Range 25 mA Maximum Junction Temperature ( 875 mW Operating Ratings 2000V Temperature Range ADC12062BIV ADC12062CIV ADC12062BIVF ADC12062CIVF Supply Voltage Range (DV The following specifications apply for MHz unless otherwise specified Boldface limits apply for Typ Conditions (Note 7) e ...
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Dynamic Characteristics 096V REF (SENSE) REF (SENSE) otherwise specified Boldface limits apply for T Symbol Parameter SINAD Signal-to-Noise Plus Distortion Ratio SNR Signal-to-Noise Ratio (Note 11) THD Total Harmonic Distortion (Note 12) ENOB ...
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AC Electrical Characteristics 096V REF (SENSE) REF (SENSE) e for T T from all other limits MIN MAX Symbol Parameter f Maximum Sampling Rate ...
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Note 5 Human body model 100 pF discharged through resistor Machine model ESD rating is 200V Note 6 See AN-450 ‘‘Surface Mounting Methods and Their Effect on Product Reliability’’ or the section titled ‘‘Surface Mount’’ found ...
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Typical Performance Characteristics Offset and Fullscale Error Change vs Reference Voltage Digital Supply Current vs Temperature ) Conversion Time (t CONV vs Temperature SINAD vs Input Frequency (ADC IN) Linearity Error Change Mux ON Resistance vs vs Reference Voltage Input ...
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Typical Performance Characteristics SINAD vs Input Frequency (Through Mux) SNR and THD vs Source Impedance Timing Diagrams FIGURE 1 Interrupt Interface Timing (MODE (Continued) SNR vs Input Frequency THD vs Input Frequency (Through Mux) (Through Mux) SNR and THD vs ...
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Timing Diagrams (Continued) FIGURE 2 High Speed Interface Timing (MODE FIGURE 3 CS Setup and Hold Timing for and OE Connection Diagrams Top View 11490 – ...
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Pin Descriptions AV These are the two positive analog supply CC inputs They should always be connected to the same voltage source brought out separately to allow for sepa- rate bypass capacitors Each supply pin should be bypassed to AGND ...
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Functional Description The ADC12062 performs a 12-bit analog-to-digital conver- sion using a 3 step flash technique The first flash deter- mines the six most significant bits the second flash gener- ates four more bits and the final flash resolves the ...
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Functional Description (Continued) tap points between ( )V and ( )V REF REF ( )V will automatically cancel a Voltage Estimator er- REF ror 256 LSBs If the first flash conversion deter- mines that the input voltage ...
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Applications Information (Continued THE ANALOG INPUT The analog input of the ADC12062 can be modeled as two small resistances in series with the capacitance of the input hold capacitor ( shown in Figure 7 The S ...
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Applications Information (Continued) FIGURE 8 Buffering the Input with an LM6361 High Speed Op Amp Another benefit of using a high speed buffer is improved THD performance when using the multiplexer of the ADC12062 The MUX on-resistance is somewhat non-linear ...
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Applications Information (Continued ANALOG MULTIPLEXER The ADC12062 has an input multiplexer that is controlled by the logic level on pin S0 when EOC goes low as shown in Figures 1 and 2 Multiplexer setup and hold times with ...
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Applications Information (Continued) Since the current flowing through the SENSE lines is essen- tially zero there is negligible voltage drop across resistor so the voltage at the inverting input of the op amp accurately represents the voltage ...
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Applications Information (Continued POWER SUPPLY CONSIDERATIONS The ADC12062 is designed to operate from a single power supply There are two analog supply pins (AV one digital supply pin (DV ) These pins allow separate CC external bypass capacitors ...
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Applications Information (Continued) edge MM74HC4538 one-shot The 1k resistor and 12 pF capacitor set the pulse length to approximately 100 ns The S H pulse stream for the converter appears on the Q output of the HC4538 This ...
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Applications Information (Continued) AC Coupling Bipolar Inputs 11490 – 26 ...
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... Physical Dimensions inches (millimeters) Order Number ADC12062BIV ADC12062CIV Plastic Leaded Chip Carrier (V) NS Package Number V44A 19 ...
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... Physical Dimensions inches (millimeters) (Continued) Order Number ADC12062BIVF ADC12062CIVF 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 ...