TDA4566 Datasheet, PDF (9/11 Pages) NXP Semiconductors – Colour transient improvement circuit

Philips Semiconductors
Colour transient improvement circuit
APPLICATION INFORMATION
Preliminary specification
TDA4566
(1) Residual carrier reduced to 20 mV peak-to-peak (R = 1 kΩ, C = 100 pF).
(2) Switching sequence for delay times shown in Table 1.
(3) R_14−18 = 1.2 kΩ for TDA4566.
R_14−18 = 1.15 kΩ for TDA4566A (27 kΩ resistor connected in parallel to 1.2 kΩ).
Fig.3 Application diagram and test circuit.
Table 1 Switching sequence for delay times.
CONNECTION ⁽²⁾
(a)
(b)
(c)
VOLTAGE AT PIN 15
0
0
0
0 to 2.5 V
0
0
X
3.5 to 5.5 V
0
X
X
6.5 to 8.5 V
X
X
X
9.5 to 12 V
Notes
1. When switch (S1) is closed the delay time is increased by 37 ns.
2. Where: X = connection closed; 0 = connection open.
March 1991
9
DELAY TIME (ns) ⁽¹⁾
550
640
730
820