Using the TSH103 to drive video signals

TSH103

6/10

5

Using the TSH103 to drive video signals

Figure 9.

Video line interface implementation schematics

The bottom of the synchronization tip at the DAC output can be as low as 0mV. In that case,

the bottom is equal to 310mV typical at the TSH103 output (see values of the output DC

shift in Table 3). The Y signal can be properly driven by the TSH103 because its low output

Figure 10.

+5V

75

Ω

75

Ω Cable

75

Ω

Video

DAC

Y

75

Ω

75

Ω Cable

75

Ω

Video

DAC

Pb

75

Ω

Video

DAC

Pr

TV

75

Ω Cable

75

Ω

DAC

load

resistor

DAC

load

resistor

DAC

load

resistor

0.7Vpp

0.3V

GND

1V

1Vpp

0.3V

GND

1V

0.7Vpp

0.3V

GND

1V

0.7Vpp

1.4Vpp

2Vpp

0.9V

GND

2.3V

0.9V

GND

2.3V

GND

1.15V

0.45V

0.7Vpp

1.4Vpp

GND

GND

TSH103

1Vpp

0.45V

GND

1.15V

0.9V

2.3V

1.15V

0.45V

DAC

Y signal

time

Amplitude

Synchronization tip

(close to zero volt)

Black

(300mV)

White

(1V)

GND

DAC

Y signal

time

Amplitude

Synchronization tip

(close to zero volt)

Black

(300mV)

White

(1V)

GND