OPA684 datasheet(8/25 Pages) TI

Part #	OPA684

Description	Low-Power, Current Feedback OPERATIONAL AMPLIFIER With Disable

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Manufacturer	TI [Texas Instruments]

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OPA684

8

SBOS219A

www.ti.com

CMRR and PSRR vs FREQUENCY

102

103

104

105

106

107

108

Frequency (Hz)

70

60

50

40

30

20

10

0

CMRR

+PSRR

–PSRR

0.10

0.09

0.08

0.07

0.06

0.05

0.04

0.03

0.02

0.01

0

Number of 150

Ω Video Loads

14

23

COMPOSITE VIDEO DIFFERENTIAL GAIN/PHASE

Gain = +2

NTSC, Positive Video

dG

dP

OUTPUT CURRENT AND VOLTAGE LIMITATIONS

–150

–100

–50

0

50

100

150

I

O (MA)

5

4

3

2

1

0

–1

–2

–3

–4

–5

1W Power

Limit

R L

=

50

Ω

1W Power

Limit

TYPICAL DC DRIFT OVER TEMPERATURE

–50

–25

0

25

50

75

100

125

Ambient Temperature (

°C)

4

3

2

1

0

–1

–2

–3

–4

Input Offset Voltage

Noninverting Input Bias Current

Inverting Input Bias Current

SUPPLY AND OUTPUT CURRENT

vs TEMPERATURE

–25

0

25

50

75

100

125

Ambient Temperature (

°C)

200

175

150

125

100

2

1.5

1.9

1.8

1.7

1.6

Sourcing Output Current

Sinking Output Current

Supply Current

Right Scale

TYPICAL CHARACTERISTICS: VS = ±5V (Cont.)

At TA = +25°C, G = +2, RF = 1kΩ, RL = 100Ω, unless otherwise noted.

OPEN-LOOP TRANSIMPEDANCE GAIN AND PHASE

102

103

104

105

106

107

108

Frequency (Hz)

120

100

80

60

40

20

0

–30

–60

–90

–120

–150

–180

20log (Z

OL)

∠ Z

OL

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