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OPA698 Datasheet(PDF) 14 Page - Texas Instruments

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Part # OPA698
Description  Unity-Gain Stable, Wideband Voltage Limiting Amplifier
PDF  27 Pages
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

OPA698 Datasheet(HTML) 14 Page - Texas Instruments

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OPA698
14
SBOS258B
www.ti.com
TYPICAL CHARACTERISTICS: VS = +5V
TA = +25°C, G = +2, RF = 402Ω, and RL = 500Ω to VCM = +2.5V, VL = VCM – 1.2V, VH = VCM + 1.2V, unless otherwise noted.
HARMONIC DISTORTION vs LOAD RESISTANCE
Load Resistance (
Ω)
100
1k
–45
–50
–55
–60
–65
–70
–75
–80
3rd-Harmonic
See Figure 2
2nd-Harmonic
V
O = 2VPP
f = 5MHz
HARMONIC DISTORTION vs FREQUENCY
Frequency (MHz)
0.5
1
10
20
–50
–55
–60
–65
–70
–75
–80
–85
–90
3rd-Harmonic
See Figure 2
2nd-Harmonic
V
O = 2VPP
R
L = 500Ω
HARMONIC DISTORTION vs OUTPUT VOLTAGE
Output Voltage Swing (V
PP)
0.5
1.0
2.0
1.5
2.5
–65
–70
–75
–80
–85
–90
3rd-Harmonic
2nd-Harmonic
R
L = 500Ω to VS/2
f = 5MHz
V
H = VOPP/2 + VCM + 0.5V
V
L = –VOPP/2 + VCM – 0.5V
2-TONE, 3RD-ORDER
INTERMODULATION INTERCEPT
Frequency (MHz)
010
40
30
20
50
45
40
35
30
25
20
G = +2V/V
OPA698
402
Ω
+2.5V
–2.5V
–V
S
+V
S
402
Ω
50
Ω
P
I
500
Ω
P
O
HARMONIC DISTORTION NEAR LIMITING VOLTAGES
Limit Voltages - 2.5V
0.9
1.0
1.1
1.6
1.7
1.4
1.5
1.2
1.3
1.8
–40
–45
–50
–55
–60
–65
–70
–75
–80
V
O = VCM ±1VP
f = 5MHz
R
L = 500Ω
3rd-Harmonic
2nd-Harmonic
LIMITER INPUT BIAS CURRENT vs BIAS VOLTAGE
Limiter Headroom (V)
0
0.5
2
1.5
1
2.5
100
75
50
25
0
–25
–50
–75
–100
Maximum Over Temperature
Minimum
Over Temperature
Limiter Headroom = +V
S – VH
=V
L – (–VS)
Current = I
VH or –IVL



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