OPA320SAIDBVT datasheet(27/58 Pages) TI2

27 / 58 page

Frequency (Hz)

-60

-40

-20

100

10k

100k

Gain

1 R R C C

1 3

1 R R C C

Output

Input

s C

1 R

1 R R C C

OPA320, OPA2320, OPA320S, OPA2320S

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SBOS513F – AUGUST 2010 – REVISED DECEMBER 2016

Product Folder Links: OPA320 OPA2320 OPA320S OPA2320S

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Typical Application (continued)

8.2.2 Detailed Design Procedure

The infinite-gain multiple-feedback circuit for a low-pass network function is shown in. Use Equation 4 to

calculate the voltage transfer function.

(4)

This circuit produces a signal inversion. For this circuit, the gain at DC and the lowpass cutoff frequency are

calculated by Equation 5.

(5)

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8.2.3 Application Curve

Figure 48. OPA320 Second-Order, 50-kHz, Low-Pass Filter

OPA320SAIDBVT Datasheet(PDF) 27 Page - Texas Instruments