OPA830 datasheet(15/56 Pages) TI

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6.9 Typical Characteristics: Over Supply Range

at PD = VS+ and TA = 25°C (unless otherwise noted)

Frequency (Hz)

-10

-280

-260

-240

-220

-200

-180

-160

-140

-120

-100

-80

100

-60

110

-40

120

-20

130

140

100

10k

100k

10M

100M

5-V Gain

5-V Phase

3-V Gain

3-V Phase

No load, simulation

Figure 6-37. Open-Loop Gain and Phase

Frequency (MHz)

0.001

0.002

0.005

0.01

0.02

0.05

0.1

0.2

0.5

100

0.01

0.1

D038

AV = 6, 5-V supply

AV = 10, 5-V supply

AV = 20, 5-V supply

AV = 6, 3-V supply

AV = 10, 3-V supply

AV = 20, 3-V supply

See Figure 8-1 and Table 8-1 (simulation)

Figure 6-38. Closed-Loop Output Impedance

Frequency (Hz)

100

10k

100k

10M

5 V En

3 V En

5 V In

3 V In

Figure 6-39. Input Spot Noise Density

Time (sec)

-80

-60

-40

-20

100

5-V supply

3-V supply

Input referred

Figure 6-40. Low-Frequency Voltage Noise

Frequency (Hz)

100

110

120

100

10k

100k

10M

5-V PSRR

5-V CMRR

3-V PSRR

3-V CMRR

Simulated results

Figure 6-41. PSRR and CMRR

Frequency (MHz)

-110

-105

-100

-95

-90

-85

-80

-75

-70

-65

0.1

D042

5 V, 200 mVPP

5 V, 1 VPP

3 V, 200 mVPP

3 V, 1 VPP

Measured, AV = 6 V/V, 100-Ω load

Figure 6-42. Disabled Isolation Noninverting Input to Output

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OPA838

SBOS867D – AUGUST 2017 – REVISED SEPTEMBER 2024

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