OPA688M datasheet(8/24 Pages) TI2

8 / 24 page

OPA688M

UNITY GAINSTABLE WIDEBAND

VOLTAGE LIMITING AMPLIFIER

SGLS144B − APRIL 2003 − DECEMBER 2006

POST OFFICE BOX 655303

• DALLAS, TEXAS 75265

TYPICAL CHARACTERISTICS

Figure 7

HARMONIC DISTORTION vs FREQUENCY

−40

−45

−50

−55

−60

−65

−70

−75

−80

−85

−90

HD2

HD3

V O = 2 Vp-p

R L = 500 Ω

Frequency (Hz)

10M

20M

Figure 8

HARMONIC DISTORTION NEAR LIMIT VOLTAGES

± Limit Voltage (V)

0.9

1.0

1.1

1.2

1.3

1.4

1.5

1.6

1.7

1.8

1.9

2.0

VO = 0V DC ±1 Vp

f1 = 5 MHz

RL = 500 Ω

HD2

HD3

−40

−45

−50

−55

−60

−65

−70

−75

−80

−85

−90

Figure 9

2ND HARMONIC DISTORTION vs OUTPUT SWING

Output Swing (Vp−p)

0.1

1.0

5.0

R L = 500 Ω

f 1 = 20MHz

f 1 = 10MHz

f 1 = 1MHz

f 1 = 5MHz

f 1 = 2MHz

−40

−45

−50

−55

−60

−65

−70

−75

−80

−85

−90

Figure 10

3RD HARMONIC DISTORTION vs OUTPUT SWING

Output Swing (Vp−p)

0.1

1.0

5.0

R L = 500 Ω

1 = 20MHz

1 = 10MHz

f 1 = 5MHz

f 1 = 2MHz

f 1 = 1MHz

−40

−45

−50

−55

−60

−65

−70

−75

−80

− 85

−90

Figure 11

HARMONIC DISTORTION vs LOAD RESISTANCE

Load Resistance (

Ω )

100

1000

O = 2 Vp-p

1 = 5MHz

HD2

HD3

−40

−45

−50

−55

−60

−65

−70

−75

−80

−85

−90

Figure 12

−3

−6

−9

−12

−15

−18

LARGE−SIGNAL FREQUENCY RESPONSE

Frequency (Hz)

10M

100M

G = +2

≤ 0.2Vp−p

2Vp−p

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