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Time (50ns/div)

0.6

0.4

0.2

0

-0.2

-0.4

-0.6

G049

High-Speed Full-Wave Rectifier #2

OPA698

200

Ω

V

H

V

L

75

Ω

300

Ω

200

Ω

OPA693

300

Ω

50

Ω

700MHz

Internal

Gain Set

50

Ω Load

75

Ω

S0042-01

Time (10ns/div)

V

IN

V

OUT

0.8

0.6

0.4

0.2

0

-0.2

-0.4

-0.6

-0.8

G050

OPA698M

SGLS287A – MAY 2005 – REVISED MARCH 2006

TYPICAL APPLICATIONS (continued)

Figure 56. 2-MHz Sinewave Rectified

The circuit shown in Figure 57 combines a half-wave rectifier driving the OPA693 in an inverting configuration,

while the input signal drives the noninverting input of the fixed gain amplifier OPA693, resulting in a full-wave

rectifier function. Results are shown in Figure 58.

Figure 57. High-Speed Full-Wave Rectifier #2

Figure 58. 10-MHz Sinewave Rectified

19

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