adc08031 National Semiconductor Corporation, adc08031 Datasheet
adc08031
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adc08031 Summary of contents
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... ADC08031/ADC08034/ADC08038 8-Bit High-Speed Serial I/O A/D Converters with Multiplexer Options, Voltage Reference, and Track/Hold Function General Description The ADC08031/ADC08032/ADC08034/ADC08038 are 8-bit successive approximation A/D converters with serial I/O and configurable input multiplexers with channels. The serial I/O is configured to comply with the NSC MICROW- IRE serial data exchange standard for easy interface to the ™ ...
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... Connection Diagrams ADC08038 ADC08031 Dual-In-Line Package www.national.com DS010555-2 Small Outline Package DS010555-5 2 ADC08034 DS010555-3 ADC08031 DS010555-31 ...
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... Supply Voltage (V CC 800 mW 1500V 260˚C 215˚C 220˚ MHz unless otherwise specified. Boldface limits , and f REF DC CLK = T = 25˚ ADC08031, ADC08034 and ADC08038 Conditions Typical (Note 8) (Note 10) 3.5 (Note 11) ± 5 4.75V V REF On Channel = 5V, Off Channel = 0V ...
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... Note 3: All voltages are measured with respect to AGND = DGND = 0 V www.national.com (Continued MHz unless otherwise specified. Boldface limits , and f REF DC CLK = T = 25˚ ADC08031, ADC08034 and Conditions Typical (Note 8) = 4.75V 1 OUT = 0V V OUT = 5V V ...
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... Absolute Maximum Ratings, whichever is lower. For devices with JMAX these parts when board mounted follow: ADC08031CIN 120˚C/W, ADC08031CIWM JA resistor. supply. During testing at low V CC does not exceed the supply voltage by more than 50 mV, the output code will be correct. Ex- ...
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Leakage Current Test Circuit TRI-STATE Test Circuits and Waveforms DS010555-40 Timing Diagrams *To reset these devices, CLK and CS must be simultaneously high for a period of t standards ADC0831/2/4/8. www.national.com DS010555-7 DS010555-38 Data Input Timing ...
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... Timing Diagrams (Continued) *LSB first output not available on ADC08031. LSB information is maintained for remainder of clock periods until CS goes high. Data Output Timing DS010555-11 ADC08031 Start Conversion Timing ADC08031 Timing 7 DS010555-12 DS010555-13 www.national.com ...
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Timing Diagrams (Continued) www.national.com ADC08034 Timing 8 DS010555-15 ...
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Timing Diagrams (Continued) 9 www.national.com ...
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ADC08038 Functional Block Diagram Functional Description 1.0 MULTIPLEXER ADDRESSING The design of these converters utilizes a comparator struc- ture with built-in sample-and-hold which provides for a differ- ential analog input to be converted by a successive- approximation routine. The actual ...
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... MUX addressing codes shown in the following tables for the various product options. The MUX address is shifted into the converter via the DI line. Because the ADC08031 contains only one differential input channel with a fixed polarity assignment, it does not require addressing. The common input line (COM) on the ADC08038 can be used as a pseudo-differential input. In this mode the voltage on this pin is treated as the “ ...
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... SE control line, the data, LSB first, is automatically shifted out the DO line after the MSB first data stream. The DO line then goes low and stays low until CS is returned high. The ADC08031 is an exception in that its data is only output in MSB first format. ...
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Functional Description (Continued) 8 Single-Ended DS010555-48 4 Differential DS010555-50 FIGURE 1. Analog Input Multiplexer Options for the ADC08038 3.0 REFERENCE CONSIDERATIONS The voltage applied to the reference input on these convert- ers, V IN, defines the voltage span of the ...
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Functional Description a) Ratiometric 4.0 THE ANALOG INPUTS The most important feature of these converters is that they can be located right at the analog signal source and through just a few wires can communicate with a controlling proces- sor ...
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Functional Description (Continued) where: = the high end of the analog input range V MAX Applications A “Stand-Alone” Hook-Up for ADC08038 Evaluation *Pinouts shown for ADC08038. For all other products tie to pin functions as shown. and = the low ...
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Applications (Continued) www.national.com Low-Cost Remote Temperature Sensor Digitizing a Current Flow 16 DS010555-45 DS010555-22 ...
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Applications (Continued) Operating with Ratiometric Transducers (− XDR CC DS010555-23 Span Adjust DS010555-46 17 www.national.com ...
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Applications (Continued) Protecting the Input Diodes are 1N914 www.national.com Zero-Shift and Span Adjust High Accuracy Comparators > all − DS010555-25 < all −V IN ...
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Applications (Continued) • Uses one more wire than load cell itself • Two mini-DIPs could be mounted inside load cell for digital output transducer • Electronic offset and gain trims relax mechanical specs for gauge factor and offset • Low ...
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Applications (Continued) • All power supplied by loop • 1500V isolation at output www.national.com 4 mA-20 mA Current Loop Converter 20 DS010555-28 ...
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Applications (Continued) • No power required remotely • 1500V isolation Isolated Data Converter 21 DS010555-29 www.national.com ...
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... Physical Dimensions inches (millimeters) unless otherwise noted Order Number ADC08031CIWM or ADC08034CIWM www.national.com NS Package Number M14B 22 ...
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... Physical Dimensions inches (millimeters) unless otherwise noted (Continued) Order Number ADC08038CIWM NS Package Number M20B Order Number ADC08031CIN NS Package Number N08E 23 www.national.com ...
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... 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 AND GENERAL COUNSEL OF NATIONAL SEMICONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant ...