THS3095D datasheet(19/31 Pages) TI

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WIDEBAND, INVERTING OPERATION

THS3091

49.9

Ω

50-

Ω Source

+VS

1.21 k

Ω

1.21 k

Ω

+VS

THS3091

499

Ω

50-

Ω Source

1 k

Ω

+VS

56.2

Ω

49.9

Ω

49.9

Ω

50-

Ω LOAD

50-

Ω LOAD

THS3091

499

Ω

0.1

µF

6.8

µF

−VS

−15 V

50-

Ω Source

0.1

µF

6.8

µF

+VS

15 V

1 k

Ω

56.2

Ω

49.9

Ω

50-

Ω LOAD

Video Distribution

SINGLE-SUPPLY OPERATION

−

Ω

n Lines

VO(1)

VO(n)

75-

Ω Transmission Line

1.21 k

Ω

1.21 k

Ω

−15 V

15 V

THS3091

THS3095

SLOS423C – SEPTEMBER 2003 – REVISED AUGUST 2004

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

least

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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