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Product data sheet

Rev. 02 — 28 April 2005

10 of 16

Philips Semiconductors

TDA6107AJF

Triple video output amplifier

To limit the diode current an external 1.5 k

Ω carbon high-voltage resistor in series with the

cathode output and a 2 kV spark gap are needed (for this resistor value, the CRT has to

be connected to the main PCB).

1. With a capacitor > 20 nF with good HF behavior (e.g. foil); this capacitor must be

2. With a capacitor > 3.3

µF on the picture tube base print, depending on the CRT size.

10.3 Switch-off behavior

The switch-off behavior of the TDA6107AJF is controllable. This is because the output

pins of the TDA6107AJF are still under control of the input pins for low power supply

voltages (approximately 30 V and higher).

10.4 Bandwidth

The addition of the flash resistor produces a decreased bandwidth and increases the rise

and fall times.

10.5 Dissipation

A distinction must first be made between static dissipation (independent of frequency) and

dynamic dissipation (proportional to frequency).

The static dissipation of the TDA6107AJF is due to voltage supply currents and load

currents in the feedback network and CRT.

Where:

Where:

δ = non-blanking duty cycle

The TDA6107AJF must be mounted on the picture tube base print to minimize the load

capacitance.