ADC12062EVAL National Semiconductor, ADC12062EVAL Datasheet
ADC12062EVAL
Specifications of ADC12062EVAL
Related parts for ADC12062EVAL
ADC12062EVAL Summary of contents
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... Standby mode typical power consumption in this mode is 100 W Block Diagram Ordering Information Industrial ( 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 Y Single 5V supply Y a Single channel or 2 channel multiplexer operation ...
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... Absolute Maximum Ratings If Military Aerospace specified devices are required please contact the National Semiconductor Sales Office Distributors for availability and specifications Supply Voltage ( Voltage at Any Input or Output Input Current at Any Pin (Note 3) Package Input Current (Note 3) Power Dissipation (Note 4) ESD Susceptibility (Note 5) ...
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Dynamic Characteristics V 4 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 V 4 096V REF (SENSE) REF (SENSE 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 Note 6 See AN-450 ‘‘Surface Mounting Methods and Their Effect on Product Reliability’’ or the section titled ‘‘Surface Mount’’ found in a current National Semiconductor Linear Data ...
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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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... In addition to the fully differential V ence inputs used on most National Semiconductor ADCs the ADC12062 has two sense outputs for precision control of the ladder voltage These sense inputs compensate for errors due to IR drops between the reference source and the ladder itself The resistance of the reference ladder is ...
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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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... The S H pulse stream for the converter appears on the Q output of the HC4538 This is the S H clock generator used on the ADC12062EVAL evaluation board For lower power a CMOS inverter-based crystal oscillator can be used in place of the DIP crystal oscillator See Application Note ...
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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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