EDN Magazine — 05.25.95 Choosing an op amp: it's no longer a trying task (figure)

FIGURE 1

Fig 1—For bipolar signals, establish a reference level above ground. Although it's easy to do with a simple resistive divider, remember to take op-amp input bias current into account. Lower bias currents also let you use larger value resistors in the divider, thereby reducing power consumption.

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