AD7801 DATASHEET PDF

Page Its on-chip precision output buffer allows the DAC output to swing rail to rail. The AD has a parallel microprocessor and DSP compatible interface with high speed registers and double buffered interface logic. Data is loaded to the input register on the rising edge

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Page Its on-chip precision output buffer allows the DAC output to swing rail to rail. The AD has a parallel microprocessor and DSP compatible interface with high speed registers and double buffered interface logic.

Data is loaded to the input register on the rising edge ESD electrostatic discharge sensitive device. Electrostatic charges as high as V readily accumulate on the human body and test equipment and can discharge without detection. Although the AD features proprietary ESD protection circuitry, permanent damage may occur on devices subjected to high energy electrostatic discharges.

Therefore, proper ESD precautions are recommended to avoid performance degradation or loss of functionality AD Pin No. Mnemonic Function Parallel Data Inputs. Active low logic input. WR Write Input active low logic input used in conjunction with CS to write data to the input register. Typical Supply Current vs. Power-On—Reset 0 0. The architecture consists of a reference amplifier and a current source DAC followed by a current-to-voltage converter capable of generating rail-to-rail voltages on the output of the DAC.

Figure 19 shows a block diagram of the basic DAC architecture Figure 20 shows the reference input arrangement DD where either the internal the externally applied reference DD can be selected. The input coding to the DAC is straight binary. Table I shows the binary transfer function for the AD Figure 26 shows the DAC transfer function for binary coding. Typical Configuration Selecting the Internal Reference Figure 28 shows a typical setup for the AD when using an external reference.

The reference range for the AD is from Higher values of reference can be incorporated DD but will saturate the output at both the top and bottom end of the transfer function AGND Figure In this circuit the full-scale current is set to 1 mA. The output voltage from the DAC is applied across the current setting resistor of 4 series with the full-scale setting resistor of Fast switching signals like clocks should be shielded with digital ground to avoid radiating noise to other parts of the board and should never be run near reference inputs AD 0.

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AD7801 DATASHEET PDF

The model number is a specific version of a generic that can be purchased or sampled. This can be one of 4 stages: Pre-Release: The model has not been released to general production, but samples may be available. Production: The model is currently being produced, and generally available for purchase and sampling. Last Time Buy: The model has been scheduled for obsolescence, but may still be purchased for a limited time. Obsolete: The specific part is obsolete and no longer available. Other models listed in the table may still be available if they have a status that is not obsolete. An Evaluation Board is a board engineered to show the performance of the model, the part is included on the board.

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AD7801 Analog Devices, AD7801 Datasheet

The model number is a specific version of a generic that can be purchased or sampled. Status Status indicates the current lifecycle of the product. This can be one of 4 stages: Pre-Release: The model has not been released to general production, but samples may be available. Production: The model is currently being produced, and generally available for purchase and sampling. Last Time Buy: The model has been scheduled for obsolescence, but may still be purchased for a limited time. Obsolete: The specific part is obsolete and no longer available. Other models listed in the table may still be available if they have a status that is not obsolete.

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The model number is a specific version of a generic that can be purchased or sampled. Status Status indicates the current lifecycle of the product. This can be one of 4 stages: Pre-Release: The model has not been released to general production, but samples may be available. Production: The model is currently being produced, and generally available for purchase and sampling. Last Time Buy: The model has been scheduled for obsolescence, but may still be purchased for a limited time.

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