TYPICAL CHARACTERISTICS: VS = ±5V
TA = 25°C, GD = 20, RG = 50Ω, and RL = 400Ω, unless otherwise noted.
DIFFERENTIAL SMALL-SIGNAL
FREQUENCY RESPONSE
DIFFERENTIAL PERFORMANCE TEST CIRCUIT
3
+5V
GD = 10V/V
0
GD = 20V/V
–3
OPA846
RF VO
Gain =
=
= GD
RG
VI
–6
–9
RG
50Ω
RF
1kΩ
GD = 30V/V
GD = 40V/V
RG
50Ω
RF
1kΩ
VI
RL
400Ω
–12
–15
–18
VO
OPA846
1
10
100
1k
Frequency (Hz)
–5V
DIFFERENTIAL LARGE-SIGNAL
FREQUENCY RESPONSE
DIFFERENTIAL DISTORTION vs LOAD RESISTANCE
–60
–65
29
26
23
20
17
14
GD = 20V/V
VO = 4VPP
F = 5MHz
GD = 20V/V
–70
VO = 400mVPP
–75
–80
2nd-Harmonic
–85
VO = 5VPP
VO = 8VPP
–90
–95
–100
–105
–110
–115
3rd-Harmonic
50
100 150 200 250 300 350 400 450 500
1
10
100
1k
Resistance (Ω)
Frequency (Hz)
DIFFERENTIAL DISTORTION vs FREQUENCY
GD = 20V/V
DIFFERENTIAL DISTORTION vs OUTPUT VOLTAGE
–65
–75
–80
–85
GD = 20V/V
RL = 400Ω
F = 5MHz
RL = 400Ω
V
O = 4VPP
–90
2nd-Harmonic
–85
–95
3rd-Harmonic
2nd-Harmonic
–100
–105
–110
–115
–95
3rd-Harmonic
–105
–115
1
10
Frequency (MHz)
100
1
10
Output Voltage Swing (VPP
)
OPA846
SBOS250C
9
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