Datasheet
WIDEBAND, INVERTING OPERATION
_
+
THS3091
49.9 Ω
50-Ω Source
V
I
+V
S
R
F
1.21 kΩ
R
G
1.21 kΩ
+V
S
2
+V
S
2
_
+
THS3091
499 Ω
50-Ω Source
V
I
V
S
R
F
1 kΩ
+V
S
2
+V
S
2
56.2 Ω
R
G
R
T
R
T
49.9 Ω
49.9 Ω
50-Ω LOAD
50-Ω LOAD
_
+
THS3091
R
G
499 Ω
0.1 µF 6.8 µF
−V
S
−15 V
50-Ω Source
+
V
I
0.1 µF 6.8 µF
+
+V
S
15 V
R
F
1 kΩ
R
M
56.2 Ω
49.9 Ω
50-Ω LOAD
Video Distribution
SINGLE-SUPPLY OPERATION
+
−
75 Ω
75 Ω
75 Ω
75 Ω
75 Ω
n Lines
V
O(1)
V
O(n)
75-Ω Transmission Line
V
I
1.21 kΩ 1.21 kΩ
−15 V
15 V
THS3091
THS3095
SLOS423G – SEPTEMBER 2003 – REVISED OCTOBER 2008 ........................................................................................................................................
www.ti.com
Figure 60 shows the THS3091 in a typical inverting
gain configuration where the input and output
impedances and signal gain from Figure 59 are
retained in an inverting circuit configuration.
Figure 61. DC-Coupled, Single-Supply Operation
Figure 60. Wideband, Inverting Gain
Configuration
The wide bandwidth, high slew rate, and high output
drive current of the THS3091/5 matches the demands
The THS3091/5 have the capability to operate from a
for video distribution for delivering video signals down
single-supply voltage ranging from 10 V to 30 V.
multiple cables. To ensure high signal quality with
When operating from a single power supply, biasing
minimal degradation of performance, a 0.1-dB gain
the input and output at mid-supply allows for the
flatness should be at least 7x the passband
maximum output voltage swing. The circuits shown in
frequency to minimize group delay variations from the
Figure 61 show inverting and noninverting amplifiers
amplifier. A high slew rate minimizes distortion of the
configured for single-supply operations.
video signal, and supports component video and
RGB video signals that require fast transition times
and fast settling times for high signal quality.
Figure 62. Video Distribution Amplifier
Application
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Product Folder Link(s): THS3091 THS3095