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Typical Application Circuits

Differential amplifier

The differential amplifier allows the subtraction of two input voltages or cancellation of a signal common the two inputs. It is useful

as a computational amplifier in making a differential to single-end conversion or in rejecting a common mode signal. Figure 4.

shown the differential amplifier using

LMV321 family.

Figure 4. Differential Amplifier

REF

1

2

V

)

(

)

(

1

3

4

3

2

1

IP

IN

1

4

4

3

2

1

OUT

R

R

R

R

R

R

R

R

R

R

R

R

R

R

V

V

V

+

+

+

+

+

−

=

REF

V

)

(

IN

IP

1

2

OUT

+

−

=

V

V

V

R

R

Low Pass Active Filter

Figure 5. Low Pass Active Filter

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