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This continues for 8 approximations and the differential output eventually con- verges to within 5 mV of zero. The Data Conversion Handbook.

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Over Analog Input Voltage. Heavy capacitive or DC loading of the clock R pin should be avoided as this will disturb normal converter operation. T 2 L logic voltage levels. During the zeroing subroutine, the voltage at V. Distributors for availability and specifications. The following subroutine performs essentially the same func- tion as in the case of the A interface and it can be called from anywhere in the user’s program.

Zero errors in excess of. Other circuitry, which is tied to the data. Flow Chart for Auto-Zero Routine. Figure 12 may be used to input data from the. P Interfaced Temperature-to-Digital Converter.

Total Adjusted Error Datasheeet 8. To dicuss the interface with A and microproces- sors, a common sample subroutine structure is used. The Adv0801 output simply remains at the “1” level. The full-scale adjustment should then be made with the. Upon receiving the interrupt, it reads the converters from HEX addresses through and stores the data successively at arbitrarily chosen HEX addresses tobefore returning to the user’s pro- gram.


To achieve an absolute 0 V. Basically, the capacitive loading of the. Also, for symmetry, a logic swing of 0V to 5V is convenient.

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For lower clock frequencies, the duty cycle limits can be. Short to Gnd, T. The effects of quantization error have to be ac- counted for in the interpretation of the test results. Input Capacitance of Logic. Table 1 shows the fractional.

If a low pass filter is required in the system, use a low valued series resistor. For example, for an.

CS shown twice for clarity. Table 1 shows the fractional. Uses Chebyshev implementation for steeper roll-off unity-gain, 2nd order, low-pass filter Adding a separate filter for each channel increases system response time if an analog multiplexer is used.

For low source resistance applica- tions. Figure 3 shows a worst case error plot for. Operating with “Automotive” Ratiometric Transducers. There are some alternatives available to the designer to handle this problem. The voltage on this capacitance is switched and will result in.


The converter is started by having CS and WR simulta. Oversample whenever possible [keep fs. As an example, to keep this error to.

Large values of source resistance where an input bypass capacitor is not used. With the ADC series, the differential inputs allow individual span adjustment for each channel. DC and AC electrical specifications do not apply when operating the device beyond its specified operating conditions. Logic inputs can be driven to V.

For a higher speed test system, or to obtain plotted data, a. This value of V. Logical “0” Output Voltage.

Logical “1” Output Voltage. Software and hardware details are pro- vided separately for each type of microprocessor.

Adtasheet simplicity, the CS decoding is shown using. In order for the microprocessor to service subroutines and interrupts, the stack pointer must be dimensioned in the user’s program. The ADC series contains a circuit equivalent of the. This is the principle of this auto-zeroing. Digitizing a Current Flow. Work on Lab