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2017-08-19 16:25  
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The front end of the DAC is configured differentially using dual eight-input IC multiplexer 1H6216 and three LM156 op amps. Following the differential amplifier is the programmable gain stage discussed earlier, with a low-pass filter on the output feeding the IH5110 sample and hold amplifier. The output of the IH5110 is connected to the comparator input, -input LM301, through the internallO-K!l feedback resistor of the 7541 multiplying dia converter.

The AD7541, along with a ?±10-V reference and successive approximation logic, make up the 2`s complement aid converter.

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