TSH70,71,72,73,74,75

Typical Application: Video Driver

3/33

2

Typical Application: Video Driver

A typical application for the TSH7x family is that of video driver for driving STi7xxx DAC

outputs on 75-ohm lines.

Figure 1 show the benefits of the TSH7x family as single supply drivers.

Figure 1.

Benefits of TSH7x family: +3V or +5V single supply solution

+5V

75

Ω

75

Ω Cable

75

Ω

2Vpp

1Vpp

1Vpp

Video

DAC

LPF

Reconstruction

Filtering

Y,G

75

Ω

75

Ω Cable

75

Ω

Video

DAC

Pb,B

75

Ω

Video

DAC

Pr,R

TV

TSH73

75

Ω Cable

75

Ω

LPF

Reconstruction

Filtering

LPF

Reconstruction

Filtering

1.4Vpp

1.4Vpp

0.7Vpp

0.7Vpp

1.4Vpp

1.4Vpp

0.7Vpp

0.7Vpp

GND

+

_

+

_

+

_

+

_

+

_

+

_

Vcc=+5V

Vcc=+3V

2Vp-p

GND

50mV

1Vp-p

GND

100mV

Gain=2

+

_

GND

GND

+5V

VOL=40mVmax.

(Tested)

VOH=4.2Vmin.

(Tested)

2Vp-p

GND

100mV

VOL=30mVmax.

(Tested)

VOH=2.45Vmin.

(Tested)

2.1V

2.1V

1k

Ω

1k

Ω

+3V

-5V

Video DAC’s outputs:

Bottom of

synchronization tip

around 50mV