OPA2684IDCNT Datasheet, PDF (10/34 Pages) Texas Instruments – Low-Power, Dual Current-Feedback OPERATIONAL AMPLIFIER

TYPICAL CHARACTERISTICS: V_S = ±5V (Cont.)
At T_A = +25°C, G = +2, R_F = 800Ω, R_L = 100Ω, unless otherwise noted.
DIFFERENTIAL PERFORMANCE
TEST CIRCUIT
+5V
R_G
V_I
R_G
1/2
OPA2684
800Ω
800Ω
G_D
=
804Ω
R_G
R_L V_O
1/2
OPA2684
–5V
DIFFERENTIAL SMALL-SIGNAL
FREQUENCY RESPONSE
6
3 ^{VO = 200mVp-p}
G=1
0
G=2
–3
–6
–9
G=5
–12
G = 10
–15
–18
G = 20
–21
–24
1
10
Frequency (MHz)
100 200
DIFFERENTIAL LARGE-SIGNAL
FREQUENCY RESPONSE
9
V_O = 0.2Vp-p
6
3
G_D = 2
R_L = 100Ω
0
–3
–6
V_O = 1Vp-p
V_O = 2Vp-p
V_O = 5Vp-p
–9
–12
–15
–18
1
10
Frequency (Hz)
100 200
DIFFERENTIAL DISTORTION
vs LOAD RESISTANCE
–55
V_O = 4Vp-p
–60 ^{GD = 2}
f = 5MHz
3rd-Harmonic
–65
–70
–75
2nd-Harmonic
–80
–85
10
100
1k
Load Resistance (Ω)
DIFFERENTIAL DISTORTION vs FREQUENCY
–55
V_O = 4Vp-p
–60 ^{GD = 2}
R_L = 100Ω
2nd-Harmonic
–65
–70
–75
3rd-Harmonic
–80
–85
1
10
Frequency (MHz)
DIFFERENTIAL DISTORTION
vs OUTPUT VOLTAGE
–55
2nd-Harmonic
–60
–65
f = 5MHz
–70 ^GD ^{= 2}
R_L = 100Ω
–75
3rd-Harmonic
–80
–85
1
10
Output Voltage (Vp-p)
10
OPA2684
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