TSH70CD 데이터 시트보기 (PDF) - STMicroelectronics

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TSH70CD

Rail-to-rail, wide-band, low-power operational amplifiers

STMicroelectronics 

TSH7x

1

Typical application: video driver

Typical application: video driver

A typical application for the TSH7x family is that of a 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: +3 V or +5 V single supply solution

Video DAC’s outputs:

Bottom of

synchronization tip

around 50mV

1Vp-p

GND

50mV

Vcc=+5V

Vcc=+3V

+

Gain=2

_

GND

+5V

VOH=4.2Vmin.

(Tested)

2.1V

+3V

VOH=2.45Vmin.

(Tested)

2.1V

2Vp-p

2Vp-p

VOL=40mVmax.

GND

(Tested)

100mV

VOL=30mVmax.

GND

(Tested)

100mV

1kΩ

1kΩ

GND

-5V

Y,G

Video

DAC

Reconstruction

Filtering

LPF

Video

DAC

Pb,B Reconstruction

Filtering

LPF

Video

DAC

Pr,R

Reconstruction

Filtering

LPF

+5V

_+

_+

_+

TSH73

GND

75Ω

2Vpp

75Ω

1.4Vpp

75Ω

1.4Vpp

75Ω Cable

75Ω Cable

75Ω Cable

1Vpp

TV

75Ω

0.7Vpp

75Ω

0.7Vpp

75Ω

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