OPA682 datasheet(7/22 Pages) TI1

Part #	OPA682

Description	Dual Wideband, Current Feedback OPERATIONAL AMPLIFIER

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Manufacturer	TI1 [Texas Instruments]

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7

OPA2681

SBOS091A

TYPICAL PERFORMANCE CURVES: VS = ±5V (Cont.)

G = +2, RF = 402Ω, RL = 100Ω, unless otherwise noted (see Figure 1).

–40

–50

–60

–70

–80

–90

2ND HARMONIC DISTORTION vs FREQUENCY

Frequency (MHz)

0.1

1

10

20

V

O = 2Vp-p

R

L = 100Ω

G = +2, R

F = 402Ω

G = +10, R

F = 180Ω

G = +5, R

F = 261Ω

–40

–50

–60

–70

–80

–90

3RD HARMONIC DISTORTION vs FREQUENCY

Frequency (MHz)

0.1

1

10

20

V

O = 2Vp-p

R

L = 100Ω

G = +2,

R

F = 402Ω

G = +10, R

F = 180Ω

G = +5, R

F = 261Ω

–40

–45

–50

–55

–60

–65

–70

–75

–80

–85

–90

TWO-TONE, 3RD-ORDER

INTERMODULATION SPURIOUS

Single-Tone Load Power (dBm)

–8

–6

–4

–2

0246

8

10

dBc = dB below carriers

50MHz

20MHz

10MHz

Load Power at Matched 50

Ω Load

60

50

40

30

20

10

0

RECOMMENDED R

S vs CAPACITIVE LOAD

Capacitive Load (pF)

1

10

100

15

12

9

6

3

0

–3

–6

–9

–12

–15

Frequency (30MHz/div)

0

300MHz

150MHz

FREQUENCY RESPONSE vs CAPACITIVE LOAD

RS

VIN

VO

CL

1k

Ω

402

Ω

402

Ω

1k

Ω is optional.

C

L = 22pF

C

L = 10pF

C

L = 47pF

C

L = 100pF

100

10

1

INPUT VOLTAGE AND CURRENT NOISE DENSITY

Frequency (Hz)

100

1k

10k

100k

1M

10M

Non-Inverting Input Current Noise

Inverting Input Current Noise

12.2pA/

√Hz

15.1pA/

√Hz

Voltage Noise

2.2nV/

√Hz

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