OPA340 datasheet(16/46 Pages) TI2

16 / 46 page

OPA340, OPA2340, OPA4340

SBOS073C – SEPTEMBER 1997 – REVISED AUGUST 2016

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Product Folder Links: OPA340 OPA2340 OPA4340

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8 Application and Implementation

NOTE

Information in the following applications sections is not part of the TI component

specification, and TI does not warrant its accuracy or completeness. TI’s customers are

responsible for determining suitability of components for their purposes. Customers should

validate and test their design implementation to confirm system functionality.

8.1 Application Information

The OPAx340 amplifier is a single-supply, CMOS operational amplifier with 5.5-MHz unity-gain bandwidth and

supply current of 950 µA. Its performance is optimized for low-voltage (2.7 V to 5.5 V), single-supply applications,

with its input common-mode voltage linear range extending 300 mV beyond the rails and the output voltage

swing within 5 mV of either rail. The OPAx340 series features wide bandwidth and unity-gain stability with rail-to-

rail input and output for increased dynamic range. Power-supply pins must be bypassed with 0.01-µF ceramic

capacitors.

8.2 Typical Applications

8.2.1 Single-Pole, Low-Pass Filter

Figure 29 shows the OPA340 in a typical noninverting application with the input signal bandwidth limited by the

input lowpass filter.

Figure 29. Single-Pole, Low-Pass Filter

Equation 1 through Equation 2 show calculations for corner frequency and gain:

(1)

(2)

OPA340 Datasheet(PDF) 16 Page - Texas Instruments