THS3096PWPR datasheet(17/34 Pages) TI

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WIDEBAND, INVERTING OPERATION

402

Ω

0.1

µF

6.8

µF

−VS

−15 V

Ω Source

0.1

µF

6.8

µF

+VS

15 V

806

Ω

57.6

Ω

49.9

Ω

Ω LOAD

49.9

Ω

Ω Source

+VS

909

Ω

909

Ω

+VS

402

Ω

Ω Source

806

Ω

+VS

57.6

Ω

49.9

Ω

49.9

Ω

Ω LOAD

SINGLE SUPPLY OPERATION

VDSL Driver Circuit

THS3092

THS3096

SLOS428A – DECEMBER 2003 – REVISED FEBRUARY 2004

Figure 53 shows the THS3092 in a typical inverting

gain

configuration

where

the

input

and

output

impedances and signal gain from Figure 52 are

retained in an inverting circuit configuration.

Figure 53. Wideband, Inverting Gain

Configuration

Figure 54. DC-Coupled, Single-Supply Operation

The THS3092/6 have the capability to operate from a

The THS3092 and THS3096 have the ability to drive

single

supply

voltage

ranging

from

over 200 mA of current with very high voltage swings.

10 V to 30 V. When operating from a single power

Using these amplifiers coupled with the very high

supply, biasing the input and output at mid-supply

slew rate, low distortion, and low noise required in

allows for the maximum output voltage swing. The

VDSL applications, makes for a perfect match. In

circuits shown in Figure 54 shows inverting and

VDSL systems where the receive signal is critical, the

noninverting amplifiers configured for single supply

use of a low transformer ratio is necessary. With this

operations.

low ratio, the output swing required from the line

driver amplifier must increase, especially when driv-

ing the VDSL’s full 14.5-dBm power onto the line. The

line driver's low distortion and noise is critical for the

VDSL as the receive bands are intertwined with the

transmit frequency bands up to the 12-MHz VDSL

limit.

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