ADC0832 National Semiconductor, ADC0832 Datasheet
ADC0832
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ADC0832 Summary of contents
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... ADC0831/ADC0832/ADC0834/ADC0838 8-Bit Serial I/O A/D Converters with Multiplexer Options General Description The ADC0831 series are 8-bit successive approximation A/D converters with a serial I/O and configurable input multiplex- ers with channels. The serial I/O is configured to comply with the NSC MICROWIRE ™ standard for easy interface to the COPS sors, and can interface with standard shift registers or µ ...
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... REF CC Top View Top View www.national.com 00558308 ADC0831 Single Differential Input 00558330 Molded Chip Carrier (PCC) Package (V) 00558331 2 ADC0832 2-Channel MUX Small Outline Package (WM) 00558341 Top View ADC0831 Single Differential Input Dual-In-Line Package (N) 00558332 Top View Small Outline Package (WM) 00558342 ...
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... Ordering Information Part Number Analog Input Channels ADC0831CCN 1 ADC0831CCWM ADC0832CIWM 2 ADC0832CCN ADC0832CCWM ADC0834BCN 4 ADC0834CCN ADC0834CCWM ADC0838BCV 8 ADC0838CCV ADC0838CCN ADC0838CIWM ADC0838CCWM See NS Package Number M14B, M20B, N08E, N14A, N20A or V20A Total Package Unadjusted Error ± 1 Molded (N) SO(M) ± 1 SO(M) Molded (N) SO(M) ± ⁄ Molded ( ± ...
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... Dual-In-Line Package (Plastic) Molded Chip Carrier Package Vapor Phase (60 sec.) Infrared (15 sec.) ESD Susceptibility (Note Operating Ratings 6.5V Supply Voltage, V −0. Temperature Range 0.3V ADC0832/8CIWM −0. ADC0834BCN, 0.3V ADC0838BCV, ± ADC0831/2/4/8CCN, ± ADC0838CCV, −65˚C to +150˚C ADC0831/2/4/8CCWM 0 ...
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... Output Source V SOURCE OUT Current (Min Output Sink Current (Min) V SINK OUT I , Supply Current (Max) CC ADC0831, ADC0834, ADC0838 ADC0832 Includes Ladder Current +0.1V 25˚C, and f = 250 kHz unless otherwise specified. Boldface limits A j CLK CIWM Devices Typ Tested Design (Note 12) ...
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... The 20 mA package input current limits the number of pins that can exceed the power supply boundaries with current limit to four. Note 5: Human body model, 100 pF discharged through a 1.5 kΩ resistor. Note 6: Total unadjusted error includes offset, full-scale, linearity, and multiplexer errors. Note 7: Cannot be tested for ADC0832. Note 8: For V (−)≥V (+) the digital output code will be 0000 0000 ...
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... Typical Performance Characteristics Unadjusted Offset Error vs. V Linearity Error vs. Temperature Power Supply Current vs. Temperature (ADC0838, ADC0831, ADC0834) Note: For ADC0832 add I . REF Voltage REF 00558343 00558345 Output Current vs. Temperature 00558347 7 Linearity Error vs. V REF Voltage 00558344 Linearity Error vs. f CLK 00558346 00558348 www ...
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Typical Performance Characteristics Leakage Current Test Circuit TRI-STATE Test Circuits and Waveforms www.national.com (Continued) Power Supply Current vs. f CLK 00558349 00558350 8 00558329 00558303 t 1H 00558351 t 0H 00558352 ...
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Timing Diagrams Data Input Timing *LSB first output not available on ADC0831. 00558324 ADC0831 Start Conversion Timing ADC0831 Timing 9 Data Output Timing 00558325 00558326 00558327 www.national.com ...
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... Timing Diagrams (Continued) www.national.com ADC0832 Timing ADC0834 Timing 10 00558328 00558305 ...
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... The MUX address selects which of the analog inputs are to be Part Number ADC0831 ADC0832 ADC0834 ADC0838 enabled and whether this input is single-ended or differential. In the differential case, it also assigns the polarity of the channels. Differential inputs are restricted to adjacent chan- nel pairs ...
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Functional Description Single-Ended MUX Mode MUX Address SGL/ ODD/ DIF SIGN Differential MUX Mode MUX Address SGL/ ODD/ DIF SIGN ...
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... TABLE 6. MUX Addressing: ADC0832 Single-Ended MUX Mode Channel # MUX Address SGL/ ODD DIF SIGN COM is internally tied to A GND TABLE 7. MUX Addressing: ADC0832 Differential MUX Mode Channel # MUX Address SGL/ ODD DIF SIGN − − ...
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Functional Description 8 Single-Ended 4 Differential FIGURE 1. Analog Input Multiplexer Options for the ADC0838 3. On each rising edge of the clock the status of the data in (DI) line is clocked into the MUX address shift register. The ...
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... For a sinusoidal common-mode signal this error is: tied to V (done internally on the ADC0832). This technique (Continued) CC relaxes the stability requirements of the system reference as the analog input and A/D reference move together maintain- ing the same output code for a given input condition ...
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... LSB down from the desired 2 analog full-scale voltage range and then adjusting the mag- nitude of the V input (or V for the ADC0832) for a REF CC digital output code which is just changing from 1111 1110 to 1111 1111. 5.3 Adjusting for an Arbitrary Analog Input Voltage ...
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Applications FIGURE 4. Operating with a Temperature Compensated Reference FIGURE 5. Using the A/D as the System Supply Regulator Digital Link and Sample Controlling Software for theSerially Oriented COP420 and the Bit Programmable I/O INS8048 00558312 *4.5V ≤ V ≤ ...
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Applications (Continued) Cop Coding Example Mnemonic Instruction LEI ENABLES SIO’s INPUT AND OUTPUT OGI G0=0 (CS =0) CLR A CLEARS ACCUMULATOR AISC 1 LOADS ACCUMULATOR WITH 1 XAS EXCHANGES SIO WITH ACCUMULATOR AND STARTS SK CLOCK ...
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Applications (Continued) A “Stand-Alone” Hook-Up for ADC0838 Evaluation * Pinouts shown for ADC0838. For all other products tie to pin functions as shown. Low-Cost Remote Temperature Sensor 21 00558359 00558360 www.national.com ...
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Applications (Continued) *V (− ≤ V ≤ XDR CC www.national.com Digitizing a Current Flow Operating with Ratiometric Transducers 22 00558315 00558337 ...
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Applications (Continued) ≤3V Span Adjust: 0V≤V IN ≤5V Zero-Shift and Span Adjust: 2V≤ 00558361 00558362 www.national.com ...
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Applications (Continued) Controller performs a routine to determine which input polarity (9-bit example) or which channel pair (10-bit example) provides a non-zero output code. This information provides the extra bits. www.national.com Obtaining Higher Resolution 00558363 a) 9-Bit A/D 00558364 b) ...
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Applications (Continued) Diodes are 1N914 > all − < all − Protecting the Input 00558318 High Accuracy Comparators 00558338 25 www.national.com ...
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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) • No power required remotely • 1500V isolation Isolated Data Converter 27 00558339 www.national.com ...
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Applications (Continued) www.national.com Two Wire Interface for 8 Channels 28 00558321 ...
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Applications (Continued) Two Wire 1-Channels Interface 29 00558322 www.national.com ...
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Physical Dimensions unless otherwise noted www.national.com inches (millimeters) Wide Body Molded Small-Outline Package (WM) NS Package Number M14B 30 ...
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Physical Dimensions inches (millimeters) unless otherwise noted (Continued) Wide Body Molded Small-Outline Package (WM) NS Package Number M20B Molded Dual-In-Line Package (N) NS Package Number N08E 31 www.national.com ...
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Physical Dimensions www.national.com inches (millimeters) unless otherwise noted (Continued) Molded Dual-In-Line Package (N) NS Package Number N14A Molded-Dual-In-Line Package (N) NS Package Number N20A 32 ...
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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 ...