OPA320-Q1 Datasheet, PDF (15/34 Pages) Texas Instruments – Precision, 20-MHz, 0.9-pA, Low-Noise, RRIO, CMOS Operational Amplifier

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Feature Description (continued)
OPA320-Q1, OPA2320-Q1
SLOS884A – SEPTEMBER 2014 – REVISED DECEMBER 2016
70
G = 1 V/V, V_S = 1.8 V
60
G = 1 V/V, V_S = 5.5 V
G = 10 V/V, V_S = 1.8 V
50
G = 10 V/V, V_S = 5.5 V
40
30
20
10
0
0
500 1000 1500 2000 2500 3000
Capacitive Load (pF)
Figure 32. Small-Signal Overshoot versus Capacitive Load (100-mV_PP Output Step)
7.3.6 Overload Recovery Time
Overload recovery time is the time it takes the output of the amplifier to come out of saturation and recover to the
linear region. Overload recovery is particularly important in applications where small signals must be amplified in
the presence of large transients. Figure 33 and Figure 34 show the positive and negative overload recovery
times of the OPAx320-Q1 device, respectively. In both cases, the time elapsed before the OPAx320-Q1 device
comes out of saturation is less than 100 ns. In addition, the symmetry between the positive and negative
recovery times allows excellent signal rectification without distortion of the output signal.
3
2.5
2
1.5
1
0.5
0
-0.5
-1
9.75
Input
Output
10
10.25
10.5
10.75
11
Time (250 ns/div)
V_S = ±2.75 V, G = –10 V/V
Figure 33. Positive Recovery Time
1
0.5
0
-0.5
-1
-1.5
-2
-2.5
-3
9.75
Input
Output
10
10.25
10.5
10.75
11
Time (250 ns/div)
V_S = ±2.75 V, G = –10 V/V
Figure 34. Negative Recovery Time
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Product Folder Links: OPA320-Q1 OPA2320-Q1