March 1991

9

Philips Semiconductors

Preliminary specification

Colour transient improvement circuit

TDA4566

APPLICATION INFORMATION

Table 1

Switching sequence for delay times.

Notes

1. When switch (S1) is closed the delay time is increased by 37 ns.

2. Where: X = connection closed; 0 = connection open.

VOLTAGE AT PIN 15

(a)

(b)

(c)

0

0

0

0 to 2.5 V

550

0

0

X

3.5 to 5.5 V

640

0

X

X

6.5 to 8.5 V

730

X

X

X

9.5 to 12 V

820

Fig.3 Application diagram and test circuit.

(1) Residual carrier reduced to 20 mV peak-to-peak (R = 1 k

Ω, C = 100 pF).

(2) Switching sequence for delay times shown in Table 1.