TDA4568 Просмотр технического описания (PDF) - Philips Electronics

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TDA4568

Luminance signal delay circuit

Philips Electronics 

Philips Semiconductors

Luminance signal delay circuit

APPLICATION INFORMATION

Preliminary specification

TDA4568

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

(2) R14-18 = 1.2 kΩ for TDA4568.

R14-18 = 1.15 kΩ for TDA4568A (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)

0

0

0

0

0

X

0

X

X

X

X

X

VOLTAGE AT PIN 15

0 to 2.5 V

3.5 to 5.5 V

6.5 to 8.5 V

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

DELAY TIME (ns) (1)

550

640

730

820

May 1989

8

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