OPA820SHKQ datasheet(10/32 Pages) TI1

Part #	OPA820SHKQ

Description	UNITY-GAIN STABLE, LOW-NOISE, VOLTAGE-FEEDBACK OPERATIONAL AMPLIFIER

Download	32 Pages

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Manufacturer	TI1 [Texas Instruments]

Direct Link	http://www.ti.com

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10 / 32 page

100

10

1

INPUT VOLTAGE AND CURRENT NOISE

Frequency (Hz)

10

100

1k

10k

100k

1M

10M

Voltage Noise (2.5nV/√Hz)

Current Noise (1.7pA/√Hz)

100

10

1

RECOMMENDED R

S vs CAPACITIVE LOAD

Capacitive Load (pF)

1

10

100

1000

0dB Peaking Targeted

90

80

70

60

50

40

30

20

10

0

CMRR AND PSRR vs FREQUENCY

Frequency (Hz)

1k

10k

100k

1M

10M

100M

CMRR

+PSRR

−PSRR

50

45

40

35

30

25

20

15

TWO−TONE, 3RD−ORDER

INTERMODULATION INTERCEPT

Frequency (MHz)

0

5

10

15

20

25

30

40 2 W

O P A 82 0

P

I

O

5 0 W

2 00 W

8

7

6

5

4

3

2

1

0

−1

−2

−3

FREQUENCY RESPONSE vs CAPACITIVE LOAD

Frequency (MHz)

1

10

100

400

C

L = 10pF

C

L = 22pF

C

L = 47pF

C

L = 100pF

4 02Ω

R

S

OPA 820

V

I

O

50Ω

1kΩ(1)

C

L

402Ω

NOTE: (1) 1kΩ is o ptional.

80

70

60

50

40

30

20

10

0

−10

OPEN−LOOP GAIN AND PHASE

Frequency (Hz)

0

−20

−40

−60

−80

−100

−120

−140

−160

−180

100

1k

10k

100k

1M

10M

100M

1G

20 log (A

OL)

∠A

OL

40 2 W

OPA820-HT

SBOS587

– DECEMBER 2011

www.ti.com

TYPICAL CHARACTERISTICS: VS = ±5 V (continued)

RF = 402 Ω, RL = 100 Ω, G = 2 and TA = 25°C unless otherwise noted.

10

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