R

G

R

F

R

1

C

1

V

IN

V

OUT

= 1 +

V

V

OUT

IN

R

R

F

G

1

1 + sR C

1

1

(

((

(

1

2pR C

1

1

f

=

-

3 dB

Time

-2

-1.5

-1

-0.5

0

0.5

1

1.5

2

Input

Output

F

V

I

R

A

R

20

TLV313, TLV2313, TLV4313

SBOS753B – JUNE 2016 – REVISED FEBRUARY 2017

www.ti.com

Product Folder Links: TLV313 TLV2313 TLV4313

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Copyright © 2016–2017, Texas Instruments Incorporated

Typical Application (continued)

When the desired gain is determined, choose a value for RI or RF. Choosing a value in the kilohm range is

desirable for general-purpose applications because the amplifier circuit uses currents in the milliamp range. This

milliamp current range ensures the device does not draw too much current. The trade-off is that very large

resistors (100s of kilohms) draw the smallest current but generate the highest noise. Small resistors (100s of

ohms) generate low noise but draw high current. This example uses 10 kΩ for RI, meaning 36 kΩ is used for RF.

The values are determined by Equation 3:

(3)

9.2.3 Application Curve

Figure 21. Inverting Amplifier Input and Output

9.3 System Examples

When receiving low-level signals, limiting the bandwidth of the incoming signals into the system is often required.

The simplest way to establish this limited bandwidth is to place an RC filter at the noninverting terminal of the

amplifier, as shown in Figure 22.

Figure 22. Single-Pole Low-Pass Filter