5.8 Typical Characteristics (continued)

at TA = 25°C, VS = ±15V, RL = 2kΩ connected to midsupply, and VCM = VOUT = midsupply (unless otherwise noted)

1

1k

100

10

Frequency (Hz)

10

100

1k

10k

100k

1M

1

Voltage Noise

Current Noise

Figure 5-7. Input Voltage and Current Noise Spectral Density

vs Frequency

Noise Bandwidth (Hz)

100

10

1

0.1

1

10

100

1k

10k

100k

Peak-to-Peak

RMS

R = 20

S

W

Figure 5-8. Input-Referred Noise Voltage vs Noise Bandwidth

0.1

1

10

100

1k

10k

100k

1M

10M

160

140

120

100

80

60

40

20

0

–20

0

–45

–90

–135

–180

Frequency (Hz)

f

G

Figure 5-9. Open-Loop Gain and Phase vs Frequency

Frequency (Hz)

50

40

30

20

10

0

–10

–20

1k

10k

100k

1M

10M

G = +10

G = +100

G = +1

Figure 5-10. Closed-Loop Gain vs Frequency

Frequency (Hz)

120

100

80

60

40

20

0

10

100

1k

10k

100k

1M

CMR

–PSR

+PSR

Figure 5-11. Power Supply and Common-Mode Rejection vs

Frequency

Frequency (Hz)

160

140

120

100

80

100

1k

10k

100k

Dual and quad devices.

G = 1, all channels.

Quad measured channel

A to D or B to C—other

combinations yield improved

rejection.

R

L = ∞

R

L = 2kΩ

Figure 5-12. Channel Separation vs Frequency

OPA134, OPA2134, OPA4134

SBOS058B – DECEMBER 1997 – REVISED NOVEMBER 2024

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