Time

-2

-1.5

-1

-0.5

0

0.5

1

1.5

2

Input

Output

F

V

I

R

A

R

V

1.8

A

3.6

0.5

OUT

V

IN

V

A

V

13

TLV369, TLV2369

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SBOS757 – MAY 2016

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Typical Application (continued)

8.2.2 Detailed Design Procedure

Determine the gain required by the inverting amplifier using Equation 1 and Equation 2:

(1)

(2)

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 that 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. Very small resistors (100s of

ohms) generate low noise but draw high current. This example uses 10 k

Ω for RI, meaning 36 kΩ is used for RF.

These values are determined by Equation 3:

(3)

8.2.3 Application Curve

Figure 16. Inverting Amplifier Input and Output