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DS1868 Datasheet(PDF) 7 Page - Dallas Semiconductor |
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DS1868 Datasheet(HTML) 7 Page - Dallas Semiconductor |
7 / 14 page DS1868 7 of 14 DS1868 ABSOLUTE AND RELATIVE LINEARITY Figure 6 TYPICAL APPLICATION CONFIGURATIONS Figures 7 and 8 show two typical application configurations for the DS1868. By connecting the wiper terminal of the part to a high impedance load, the effects of the wiper resistance is minimized, since the wiper resistance can vary from 400 to 1000 ohms, depending on wiper voltage. Figure 7 presents the device connected in a variable gain amplifier. The gain of the circuit on Figure 7 is given by the following equation: AV = n - 256 256 + where n = 0 to 255 Figure 8 shows the device operating in a fixed gain attenuator where the potentiometer is used to attenuate an incoming signal. Note the resistance R1 is chosen to be much greater than the wiper resistance to minimize its effect on circuit gain. |
Similar Part No. - DS1868 |
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Similar Description - DS1868 |
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