ADC0848 National Semiconductor, ADC0848 Datasheet
ADC0848
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ADC0848 Summary of contents
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... A/ config- ured as memory locations or I/O devices to the microproces- sor with no interface logic necessary. Block Diagram * ADC0848 shown in DIP Package CH5-CH8 not included on the ADC0844 © 2006 National Semiconductor Corporation Features n Easy interface to all microprocessors ...
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... Total Unadjusted Error MUX ± ± Channels 1 ⁄ LSB 1 LSB 2 ADC0844CCN ADC0848BCN ADC0848CCN ADC0844BCJ* ADC0844CCJ* ADC0848BCV ADC0848CCV ADC0848BCVX ADC0848CCVX 2 Dual-In-Line Package 00501602 Top View Package Outline N20A 4 Molded Dip N24C 8 Molded Dip J20A 4 Cerdip V28A 8 Molded Chip Carrier V28A ...
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... T = 25˚ Parameter CONVERTER AND MULTIPLEXER CHARACTERISTICS Maximum Total Unadjusted Error ADC0844BCN, ADC0848BCN, BCV ADC0844CCN, ADC0848CCN, CCV ADC0844CCJ (Note 12) Minimum Reference Input Resistance Maximum Reference Input Resistance Maximum Common-Mode Input Voltage (Note 9) Minimum Common-Mode Input Voltage DC Common-Mode Error Power Supply Sensitivity ...
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... Be careful during testing at low V CC does not exceed the supply voltage by more than 50 mV, the output code will be correct. To achieve MIN MAX ADC0844CCN ADC0848BCN, ADC0848CCN ADC0848BCV, ADC0848CCV Limit Design Tested Design Typ Limit Limit Limit (Note 5) (Note 7) (Note 6) (Note 7) 0 ...
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Typical Performance Characteristics Logic Input Threshold Voltage vs. Supply Voltage Power Supply Current vs. Temperature Conversion Time vs. V 00501631 00501633 SUPPLY 00501635 5 Output Current vs. Temperature 00501632 Linearity Error vs. V REF 00501634 Conversion Time vs. Temperature 00501636 ...
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Typical Performance Characteristics Unadjusted Offset Error vs. V Voltage REF TRI-STATE Test Circuits and Waveforms www.national.com (Continued) 00501637 00501604 00501606 ...
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Leakage Current Test Circuit Timing Diagrams Programming New Channel Configuration and Starting a Conversion Note 13: Read strobe must occur at least 600 ns after the assertion of interrupt to guarantee reset of INTR . Note 14: MA stands for ...
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Timing Diagrams (Continued) www.national.com 00501610 8 ...
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... Figure 1 shows the three modes using the 4-channel MUX ADC0844. The eight inputs of the ADC0848 can also be configured in any of the three modes. In the differential mode, the ADC0844 channel inputs are grouped in pairs, CH1 with CH2 and CH3 with CH4. The polarity assignment of each channel in the pair is inter- changeable. The single-ended mode has CH1– ...
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Applications Information 2.0 REFERENCE CONSIDERATIONS The voltage applied to the reference input of these convert- ers defines the voltage span of the analog input (the differ- ence between V and V ) over which the 256 IN(MAX) IN(MIN) possible output ...
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... This large a common-mode signal is much greater than that generally found in a well designed data acquisition system. TABLE 2. ADC0848 MUX Addressing Channel WR RD CH1 CH2 CH3 CH4 CH5 CH6 CH7 CH8 AGND ...
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Applications Information 4.0 OPTIONAL ADJUSTMENTS 4.1 Zero Error The zero of the A/D does not require adjustment. If the minimum analog input voltage value, V IN(MIN) a zero offset can be done. The converter can be made to output 0000 ...
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Applications Information The full-scale adjustment should be made [with the proper V (−) voltage applied] by forcing a voltage to the V IN input which is given by: www.national.com where V =the high end of the analog input range and ...
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Applications Information Diodes are 1N914 (Continued) ≤3V) Span Adjust (0V≤V IN Protecting the Input 15 00501620 00501621 www.national.com ...
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Applications Information > all (+) V (− < all (+) V (− Operating with Automotive Ratiometric Transducers * V (−)=0. ≤V ≤85% of ...
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... Applications Information Note: DUT pin numbers in parentheses are for ADC0844, others are for ADC0848. Start a Conversion without Updating the Channel Configuration CS • WR will update the channel configuration and start a conversion. CS • RD will read the conversion data and start a new conversion without updating the channel configuration. ...
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Applications Information SAMPLE PROGRAM FOR ADC0844 — INS8039 INTERFACE CONVERTING TWO RATIOMETRIC, DIFFERENTIAL SIGNALS 0000 04 10 0010 B9 FF BEGIN: 0012 B8 20 0014 89 FF 0016 23 00 0018 14 50 001A 23 02 001C 18 001D 14 ...
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... SAMPLE PROGRAM FOR ADC0844 — INS8039 INTERFACE CONVERTING TWO RATIOMETRIC, DIFFERENTIAL SIGNALS (Continued) 0053 09 LOOP: 0054 32 53 0056 81 0057 89 01 0059 A0 005A 83 SAMPLE PROGRAM FOR ADC0848 — NSC800 INTERFACE 0008 NCONV 000F DEL 001F CS 3C00 ADDTA 0000 MUXDTA: 0004 0008' ...
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Physical Dimensions Ceramic Dual-In-Line Package (J) (product obsolete in this package) www.national.com inches (millimeters) unless otherwise noted NS Package Number J20A Molded Dual-In-Line Package (N) NS Package Number N20A 20 ...
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Physical Dimensions inches (millimeters) unless otherwise noted (Continued) Molded Dual-In-Line Package (N) NS Package Number N24C 21 www.national.com ...
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