OPA820 datasheet(10/32 Pages) TI1

Part #	OPA820

Description	Unity-Gain Stable, Low-Noise, Voltage-Feedback Operational Amplifier

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Manufacturer	TI1 [Texas Instruments]

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OPA820

SBOS303C − JUNE 2004 − REVISED AUGUST 2008

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10

TYPICAL CHARACTERISTICS: VS = +5V

RF = 402Ω, RL = 100Ω, and G = +2, unless otherwise noted.

3

0

−3

−6

−9

−12

−15

−18

NONINVERTING SMALL−SIGNAL FREQUENCY RESPONSE

Frequency (Hz)

1M

10M

100M

1G

G= +1

V

O =0.1VPP

R

L =100Ω

SeeFigure3

G= +10

G= +2

G= +5

9

6

3

0

−3

−6

−9

−12

NONINVERTING LARGE−SIGNAL FREQUENCY RESPONSE

Frequency (MHz)

1

10

100

600

V

O =0.5VPP

V

O =1VPP

V

O =2VPP

V

O =4VPP

G= +2V/V

R

L =100Ω

See Figure 3

2.9

2.8

2.7

2.6

2.5

2.4

2.3

2.2

2.1

NONINVERTING PULSE RESPONSE

Time (10ns/div)

4.5

4.0

3.5

3.0

2.5

2.0

1.5

1.0

0.5

Large Signal

± 1V

Right Scale

Small Signal

± 100mV

Left Scale

G= +2

See Figure 3

3

0

−3

−6

−9

−12

−15

−18

INVERTING SMALL−SIGNAL FREQUENCY RESPONSE

Frequency (MHz)

1

10

100

500

G=

−1

G=

−2

G=

−5

G=

−10

V

O =0.1VPP

R

L =100Ω

See Figure 4

3

0

−3

−6

−9

−12

−15

−18

INVERTING LARGE−SIGNAL FREQUENCY RESPONSE

Frequency (MHz)

1

10

100

500

V

O =0.5VPP

V

O =1VPP

V

O =2VPP

V

O =4VPP

G=

−1

R

L =100Ω

See Figure 4

2.9

2.8

2.7

2.6

2.5

2.4

2.3

2.2

2.1

INVERTING PULSE RESPONSE

Time (10ns/div)

4.5

4.0

3.5

3.0

2.5

2.0

1.5

1.0

0.5

Large Signal

± 1V

Right Scale

Small Signal

± 100mV

Left Scale

G=

−1

SeeFigure4

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