TYPICAL CHARACTERISTICS: V
S
=
±
5V
T
A
= 25°C, G
D
= 20, R
G
= 50Ω, and R
L
= 400Ω, unless otherwise noted.
DIFFERENTIAL SMALL-SIGNAL
FREQUENCY RESPONSE
3
+5V
DIFFERENTIAL PERFORMANCE TEST CIRCUIT
0
G
D
= 10V/V
G
D
= 20V/V
Normalized Gain (dB)
OPA846
R
G
50Ω
R
G
50Ω
R
F
1kΩ
R
F
1kΩ
–3
–6
–9
G
D
= 30V/V
–12
–15
G
D
= 40V/V
R
V
Gain =
F
=
O
= G
D
R
G
V
I
V
I
R
L
400Ω
V
O
OPA846
–18
1
10
Frequency (Hz)
100
1k
–5V
DIFFERENTIAL LARGE-SIGNAL
FREQUENCY RESPONSE
29
DIFFERENTIAL DISTORTION vs LOAD RESISTANCE
–60
–65
G
D
= 20V/V
V
O
= 4V
PP
F = 5MHz
G
D
= 20V/V
26
V
O
= 400mV
PP
Harmonic Distortion (dBc)
–70
–75
–80
–85
–90
–95
–100
–105
–110
3rd-Harmonic
–115
Gain (dB)
23
V
O
= 5V
PP
20
V
O
= 8V
PP
17
2nd-Harmonic
14
1
10
Frequency (Hz)
100
1k
50
100
150
200
250
300
350
400
450
500
Resistance (Ω)
DIFFERENTIAL DISTORTION vs FREQUENCY
–65
G
D
= 20V/V
R
L
= 400Ω
V
O
= 4V
PP
DIFFERENTIAL DISTORTION vs OUTPUT VOLTAGE
–80
–85
G
D
= 20V/V
R
L
= 400Ω
F = 5MHz
2nd-Harmonic
–95
–100
–105
3rd-Harmonic
–110
–115
Harmonic Distortion (dBc)
–75
Harmonic Distortion (dBc)
100
–90
–85
2nd-Harmonic
–95
3rd-Harmonic
–105
–115
1
10
Frequency (MHz)
1
Output Voltage Swing (V
PP
)
10
OPA846
SBOS250C
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TI [ TEXAS INSTRUMENTS ]
