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AN-1525 Single Supply Operation of the (的- 1525单供应操作).pdf

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Application Report SNAA035A– September 2006– Revised April 2013 AN-1525 Single Supply Operation of the DAC0800 and DAC0802 ABSTRACT This application report develops the positive-only bias voltages needed to successfully operate the ADC0800 and the DAC0802 with a single supply voltage. The principles here also apply to the DAC0808, which is a two quadrant multiplying DAC with a single output. Contents 1 Executive Summary 2 2 Overview 2 3 General Biasing Requirements 2 4 Unipolar Supply Modification 3 4.1 Reference Considerations 4 4.2 Output Biasing 4 4.3 Input Level Threshold 4 4.4 Output Considerations 4 4.5 Complete Circuit Example 5 5 Summary 6 List of Figures 1 General Circuit for the DAC0800 3 2 Positive Only Supply Circuit for the DAC0800 4 3 Simple Digital Input Level Shifting Circuit 4 4 Current-to-Voltage Converter With Offset Correction 5 5 Complete Single Supply DAC0800 Design With 0 V to 5 V Output 5
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