TDA4510.pdf

INTEGRATED CIRCUITS

DATA SHEET

TDA4510

PAL decoder

Product speciﬁcation

File under Integrated Circuits, IC02

March 1986

Philips Semiconductors

Product speciﬁcation

PAL decoder

TDA4510

GENERAL DESCRIPTION

The TDA4510 is a colour decoder for the PAL standard, which is pin sequent compatible with multistandard decoder

TDA4555 and also pin compatible with NTSC decoder TDA4570. It incorporates the following functions:

Chrominance part

Gain controlled chrominance amplifier with operating point control stage

Chrominance output stage for driving the 64 m s delay line

Blanking circuit for the colour burst signal

Automatic chrominance control (ACC) with sampled rectifier during burst-key

Oscillator and control voltage part

Reference oscillator for double subcarrier frequency

Gated phase comparison

Identification demodulator and automatic colour killer

Sandcastle pulse detector

Service switch

Demodulator part

Two synchronous demodulators for the (B-Y) and (R-Y) signals

PAL flip-flop and PAL switch

Colour switching stages

Separate colour switching output

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

Internal filtering of residual carrier

QUICK REFERENCE DATA

Supply voltage

V P = V 7-3

typ. 12

Supply current

I P = I 7

typ. 50

Chrominance input signal (peak-to-peak)

V 9-3(p-p)

10 to 400 mV

Chrominance output signal (peak-to-peak)

V 6-3(p-p)

typ. 1,6

Colour difference output signals (peak-to-peak values)

(R-Y) signal

V 1-3(p-p)

typ. 1,05 V

2dB

(B-Y) signal

V 2-3(p-p)

typ. 1,33 V

2dB

Sandcastle pulse, required amplitude for

burst gating level

V 15-3

typ. 7,7

horizontal pulse separation

V 15-3

typ. 4,5

vertical and horizontal pulse separation

V 15-3

typ. 2,5

PACKAGE OUTLINE

16-lead DIL; plastic (SOT38); SOT38-1; 1996 November 26.

March 1986

External capacitors in Fig.1

C1 filter capacitor for control voltage (pin 10)

C2 filter capacitor for identification signal (pin 14)

Fig.1 Block diagram.

Philips Semiconductors

Product speciﬁcation

PAL decoder

TDA4510

FUNCTIONAL DESCRIPTION

DIVIDER STAGES

The divider stages provide

(R-Y) and

(B-Y) reference signals with the correct 90 degrees relation for the demodulators.

PHASE COMPARATOR

The phase comparator compares the

(R-Y) reference signal with the burst pulse and controls the frequency and phase

of the reference oscillator.

IDENTIFICATION DEMODULATOR

The identification demodulator delivers a positive going identification signal for PAL-signals at pin 14, also used for the

automatic colour-killer.

1 V) allows the adjustment of the reference oscillator.

Therefore the colour is switched on and the burst for the oscillator PLL is switched off. The second position (V 14-3 >

5V)

switches the colour on and the output signals can be observed.

SANDCASTLE PULSE DETECTOR

Sandcastle pulse detector for burst-gate, line and blanking (horizontal and vertical) pulse detection. The vertical part of

the sandcastle pulse is needed for the internal colour-on and colour-off delay.

PULSE PROCESSING PART

Pulse processing part which shall prevent a premature switching on of the colour. The colour-on delay, two or three field

periods after identification of the PAL signal, is achieved by a counter. The colour is switched off immediately or at the

latest one field period after disappearance of the identification voltage.

RATINGS

Limiting values in accordance with the Absolute Maximum System (IEC 134)

Supply voltage range

V P = V 7-3

10,8 to 13,2 V

Currents

at pins 1 and 2

- I 1,2

max. 5

at pin 6

I 6

max. 15

at pin 16

I 16

max. 5

Total power dissipation

P tot

max. 800 mW

Storage temperature

T stg

- 25 to + 150

° C

Operating ambient temperature

T amb

0 to

March 1986

SERVICE SWITCH

The service switch has two functions. The first position (V 14-3 <

Philips Semiconductors

Product speciﬁcation

PAL decoder

TDA4510

CHARACTERISTICS

V P = 12 V; T amb = 25 ° C; measured in Fig.2 unless otherwise speciﬁed

PARAMETER

SYMBOL

MIN.

TYP.

MAX.

UNIT

Supply current

I 7

Chrominance part

Input voltage range (peak-to-peak value)

V 9-3(p-p)

400

Nominal input voltage (peak-to-peak value)

with 75% colour bar signal

V 9-3(p-p)

100

Input impedance

Z 9-3

3,3

Input capacitance

C 9-3

Colour ON

Chrominance output voltage (peak-to-peak)

with 75% colour bar signal

V 6-3(p-p)

1,6

d.c. voltage at chrominance output

V 6-3

8,2

Oscillator and control voltage part

Oscillator frequency

f o

8,8

MHz

Input resistance

R 13-3

350

Catching range

(depending on RC-network at pin 12)

± 400

Control voltage

without burst signal

V 14-3

6,0

colour on switching threshold

V 14-3

6,6

hysteresis of colour switching

V 14-3

150

flip-flop correction (FFC) voltage

V 14-3

5,5

hysteresis of FFC

V 14-3

170

Colour-on delay

f.p. (1)

Colour-off delay

f.p. (1)

First service position (PLL is inactive

for oscillator adjustment, colour on)

V 11-3

second service position (colour on)

V 11-3

Colour switching output (open npn emitter)

output current

I 16

colour-on voltage

V 16-3

colour-off voltage

V 16-3

March 1986

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