TSH94

Application information

11/19

Figure 20.

Video line transceiver with remote control

Printed circuit layout recommendations

As for any high frequency device, a few rules must be observed when designing the PCB to

get the best performance from this high-speed op-amp.

Some recommendations are listed below, from the most important to the least important:

●

By-pass each power supply lead to ground with a 10

μF capacitor and a 10nF ceramic

capacitor very close to the device.

●

To provide low inductance and low resistance common return, use a ground plane or

common point return for power and signal.

●

Make sure all leads are wide and as short as possible, especially for op-amp inputs.

This is to decrease parasitic capacitance and inductance.

●

Use small resistor values to decrease the time constant with parasitic capacitance.

●

Choose component sizes as small as possible (SMD).

●

On the output, keep the capacitor load as low as possible to avoid oscillation which

would degrade the circuit stability. You can also add a serial resistor in order to

minimise the effect of the capacitor load.