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Notes on video line driving

TA0310

(see datasheet), the minimum amplitude of the signal guaranteed on the line is 75mV. This results in a

loss of the bottom signal which is only 75mV (at worst).

10 Notes on video line driving

Implementation of TSH7x-TSH8x families in single supply 0/+5V:

If the op-amp is not rail-to-rail, the DC component of the video signal must be shifted to a higher value

using the networks described in Figure 8. In this way, the video signal is not truncated by the output stage

of the op-amp (VOL=1.2V max., see datasheet).

Figure 8: Implementation of the TSH7x-8x in single supply 0/+5V

1k

Ω

video line

75

Ω

75

Ω

1k

Ω

+

-

+5V

0Volt

TSH7x

2Vpp

1Vpp

0Volt

1Vpp

0V

5V

75mV max.

0V

1Vp-p

Signal on the line

300mV