ADC08134 National Semiconductor, ADC08134 Datasheet
ADC08134
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ADC08134 Summary of contents
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... High-Speed Serial I/O A/D Converters with Multiplexer Options, Voltage Reference, and Track/Hold Function General Description The ADC08131/ADC08134/ADC08138 are 8-bit successive approximation A/D converters with serial I/O and config- urable input multiplexers with channels. The serial I/O is configured to comply with the NSC MICROWIRE rial data exchange standard for easy interface to the COPS ™ ...
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... Connection Diagrams www.national.com ADC08138CIWM Small Outline Packages DS010749-2 ADC08134CIWM Small Outline Packages DS010749-3 ADC08131CIWM Small Outline Package DS010749-4 2 ...
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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 Inputs and Outputs −0. Input Current at Any Pin (Note 4) Package Input Current (Note 4) = 25˚C Power Dissipation at T ...
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... face limits apply for MIN Symbol Parameter DIGITAL AND DC CHARACTERISTICS I Output Sink Current SINK Supply Current I ADC08134, ADC08138 CC ADC08131 (Note 16) Electrical Characteristics The following specifications apply for all other limits MIN MAX Symbol Parameter ...
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... IN is internally tied to the on chip 2.5V band-gap reference output; therefore, the supply current is larger because it includes the REF reference current (700 µA typical maximum). Note 17: Load regulation test conditions and specifications for the ADC08131 differ from those of the ADC08134 and ADC08138 because the ADC08131 has the on-board reference as a permanent load. (Continued ...
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ADC08138 Simplified Block Diagram www.national.com DS010749-1 6 ...
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... Typical Converter Performance Characteristics Linearity Error vs Reference Voltage DS010749-27 Power Supply Current vs Temperature (ADC08138, ADC08134) DS010749-30 Note: For ADC08131 add I REF Typical Reference Performance Characteristics Load Regulation DS010749-33 Linearity Error vs Temperature DS010749-28 Output Current vs Temperature DS010749-31 Line Regulation (3 Typical Parts) DS010749-34 ...
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Typical Reference Performance Characteristics Available Output Current vs Supply Voltage DS010749-36 TRI-STATE Test Circuits and Waveforms DS010749-38 Timing Diagrams * To reset these devices, CLK and CS must be simultaneously high for a period of t ...
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... Timing Diagrams (Continued) *LSB first output not available on ADC08131. LSB information is maintained for remainder of clock periods until CS goes high. Data Output Timing ADC08131 Start Conversion Timing ADC08131 Timing ADC08134 Timing 9 DS010749-10 DS010749-11 DS010749-12 DS010749-13 www.national.com ...
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Timing Diagrams (Continued) www.national.com 10 ...
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ADC08138 Functional Block Diagram 11 www.national.com ...
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... This feature is most useful in single-supply applica- tions where the analog circuity may be biased poten- tial other than ground and the output signals are all referred to this potential. TABLE 1. Multiplexer/Package Options Part Number Single-Ended ADC08131 ADC08134 ADC08138 TABLE 2. MUX Addressing: ADC08138 Analog Single-Ended Channel # ...
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... The converter is now waiting for a start bit and its MUX assignment word each rising edge of the clock the status of the data in (DI) line is clocked into the MUX address shift register. Analog Differential Channel-Pair # TABLE 4. MUX Addressing: ADC08134 Channel # ODD/ SELECT 0 1 SIGN ...
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... For absolute accuracy, where the analog input varies be- tween specific voltage limits, the reference input must be bi- ased with a stable voltage source. The ADC08134 and the ADC08138 provide the output of a 2.5V band-gap reference at V OUT. This voltage does not vary appreciably with REF www ...
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... LSB error 4 nitude of the V IN input for a digital output code which is REF just changing from 1111 1110 to 1111 1111 (See figure en- titled “Span Adjust the ADC08134 and ADC08138. (The reference is internally connected the ADC08131). REF 15 256). REF/ DS010749-18 ...
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Functional Description Adjusting for an Arbitrary Analog Input Voltage Range If the analog zero voltage of the A/D is shifted away from ground (for example, to accommodate an analog input signal which does not go to ground), this new zero ...
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Applications (Continued) Low-Cost Remote Temperature Sensor Diodes are 1N914 DS010749-46 Protecting the Input DS010749-22 17 www.national.com ...
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Applications (Continued) (− REF 15 85 REF XDR REF www.national.com Operating with Ratiometric Transducers Span Adjust DS010749-24 18 DS010749-23 ...
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Applications (Continued) Zero-Shift and Span Adjust DS010749-25 19 www.national.com ...
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... Physical Dimensions inches (millimeters) unless otherwise noted www.national.com Order Number ADC08134CIWM NS Package Number M14B 20 ...
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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 ...