TDA4566 Просмотр технического описания (PDF) - Philips Electronics

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TDA4566

Colour transient improvement circuit

Philips Electronics 

Philips Semiconductors

Colour transient improvement circuit

Preliminary specification

TDA4566

GENERAL DESCRIPTION

The TDA4566 is a monolithic integrated circuit for colour-transient improvement (CTI) and luminance delay line in gyrator

technique in colour television receivers.

Features

• Colour transient improvement for colour difference signals (R-Y) and (B-Y) with transient detecting-, storage- and

switching stages resulting in high transients of colour difference output signals

• A luminance signal path (Y) which substitutes the conventional Y-delay coil with an integrated Y-delay line

• Switchable delay time from 550 ns to 820 ns in steps of 90 ns and additional fine adjustment of 37 ns

• Two Y output signals; one of 180 ns less delay

QUICK REFERENCE DATA

PARAMETER

CONDITIONS

SYMBOL

MIN. TYP.

Supply voltage (pin 10)

Supply current (pin 10)

Y-signal delay at pin 12

V15-18 = 0 to 2.5 V

V15-18 = 3.5 to 5.5 V

V15-18 = 6.5 to 8.5 V

V15-18 = 9.5 to12 V

Y-signal amplification

(R-Y) and (B-Y) signal

attenuation

output transient time

S1 open;

R14-18 = 1.2 kΩ;

note 1

0.5 MHz

VP

IP

t17-12

t17-12

t17-12

t17-12

αY

αcd

ttr

10.8 12

−

35

490

550

580

640

670

730

760

820

0

1

−1

0

−

100

Note

1. Delay time is proportional to resistor R14-18.

R14-18 also influences the bandwidth; a value of 1.2 kΩ results in a bandwidth of 5 MHz (typ.).

MAX. UNIT

13.2 V

50

mA

610 ns

700 ns

790 ns

880 ns

2

dB

+1

dB

200 ns

PACKAGE OUTLINE

18-lead DIL; plastic (SOT102); SOT102-1; 1996 November 27.

March 1991

2

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