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OPA698

49.9

Ω

6

I

VH

V

O

V

IN

I

VL

-V

S = -5V

3

2

4

7

8

5

R

F

402

Ω

R

G

402

Ω

500

Ω

0.1

µF

0.1

µF

0.1

µF

174

Ω

3.01k

Ω 1.91kΩ

3.01k

Ω 1.91kΩ

0.1

µF

V

H = +2V

V

L = -2V

+

2.2

µF

+

2.2

µF

+V

S = +5V

S0035-01

OPA698

57.6

Ω

6

I

VH

V

H = 3.7V

V

O

V

L = 1.3V

V

IN

I

VL

806

Ω

3

2

4

7

8

5

806

Ω

523

Ω

976

Ω

523

Ω

R

G

402

Ω

R

F

402

Ω

500

Ω

0.1

µF

0.1

µF

0.1

µF

+

2.2

µF

0.1

µF

V

S = +5V

0.1

µF

0.1

µF

S0036-01

Single Supply, Noninverting Amplifier

OPA698M

SGLS287A – MAY 2005 – REVISED MARCH 2006

TYPICAL APPLICATIONS (continued)

for each supply consists of two capacitors: one electrolytic 2.2 µF and one ceramic 0.1 µF. The supply bypass

capacitors are shown explicitly in Figure 47 and Figure 48, but is assumed in the other figures. An additional

0.01-µF power-supply decoupling capacitor (not shown here) can be included between the two power-supply

pins. In practical PC board layouts; this optional-added capacitor typically improves the 2nd harmonic distortion

performance by 3 dB to 6 dB.

Figure 47. DC-Coupled, Dual-Supply Amplifier

Figure 48. AC-Coupled, Single-Supply Amplifier

Figure 48 shows an ac-coupled, noninverting gain amplifier for single +5-V supply operation. This circuit was

used for ac characterization of the OPA698, with a 50-

Ω source (which it matches) and a 500-Ω load. The

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