OPA191_17 datasheet(17/49 Pages) TI1

Part #	OPA191

Description	Low Power, Precision, CMOS, Rail-to-Rail Input/Output, Low Offset Voltage, Low Input Bias Current Op Amp

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Manufacturer	TI1 [Texas Instruments]

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Time (2.5 µs/div)

C017

Time (Ps)

Negative overload

Positive overload

0

10

20

10

100

1000

Capacitive Load (pF)

RISO = 0

RISO = 25

RISO = 50

C004

Time (50 Ps/div)

Output

Input

Frequency (Hz)

100m

1

10

100

1k

10k

100k

1M

10M

100

1k

10k

100k

0

10

20

30

40

50

60

10

100

1000

Capacitive Load (pF)

RISO = 0

RISO = 25

RISO = 50

C004

17

OPA191, OPA2191, OPA4191

www.ti.com

SBOS701A – DECEMEBER 2015 – REVISED APRIL 2016

Product Folder Links: OPA191 OPA2191 OPA4191

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At TA = 25°C, VS = ±18 V, VCM = VS / 2, RL = 10 kΩ connected to VS / 2, and CL = 100 pF, unless otherwise noted.

Figure 31. Open-Loop Output Impedance vs Frequency

G = –1, 100-mV output step

Figure 32. Small-Signal Overshoot vs Capacitive Load

(100-mV Output Step)

G = 1, 100-mV output step

Figure 33. Small-Signal Overshoot vs Capacitive Load

Figure 34. No Phase Reversal

VS = ±18 V, G = –10 V/V

Figure 35. Overload Recovery

G = 1, CL = 10 pF

Figure 36. Small-Signal Step Response

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OPA191 Datasheet(PDF) 17 Page - Texas Instruments

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