A particular application requires that an instrumentation interface deliver vO200vTR 5 V 2 % to a DAC.

A particular application requires that an instrumentation interface deliver vO¼200vTR 5 V 2 % to a DAC.

The solution currently in use requires two OP AMPs and is constantly draining the supply batteries. A young engineer designed another tentative solution using just one OPAMP shown in Figure P4–67. As her supervisor, you must determine if it works. Does her design meet the specifications?

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5v+ 5V I 20 w 3.3 100 ww 3.3 + VTR ww FIGURE P4-67 + 680 680 w + V2 To DAC