Philips tda4566 DATASHEETS
INTEGRATED CIRCUITS
DATA SH EET
TDA4566
Colour transient improvement
circuit
Preliminary specification
File under Integrated Circuits, IC02
March 1991
Philips Semiconductors Preliminary specification
Colour transient improvement circuit 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. MAX. UNIT
Supply voltage (pin 10) V
Supply current (pin 10) I
Y-signal delay at pin 12 S1 open;
R
= 1.2 kΩ;
14-18
note 1
V
= 0 to 2.5 V t
15-18
= 3.5 to 5.5 V t
V
15-18
V
= 6.5 to 8.5 V t
15-18
V
= 9.5 to12 V t
15-18
Y-signal amplification 0.5 MHz α
(R-Y) and (B-Y) signal
attenuation α
output transient time t
P
P
17-12
17-12
17-12
17-12
Y
cd
tr
10.8 12 13.2 V
− 35 50 mA
490 550 610 ns
580 640 700 ns
670 730 790 ns
760 820 880 ns
012dB
−10 +1dB
− 100 200 ns
Note
1. Delay time is proportional to resistor R
R
also influences the bandwidth; a value of 1.2 kΩ results in a bandwidth of 5 MHz (typ.).
14-18
14-18
.
PACKAGE OUTLINE
18-lead DIL; plastic (SOT102); SOT102-1; 1996 November 27.
March 1991 2
Philips Semiconductors Preliminary specification
Colour transient improvement circuit TDA4566
March 1991 3
Fig.1 Block diagram.
Philips Semiconductors Preliminary specification
Colour transient improvement circuit TDA4566
March 1991 4
Fig.2 Internal pin circuit diagram.
Loading...