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Philips TDA8303A User Manual

Page 10

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July 1992

10

Philips Semiconductors

Preliminary specification

Small signal combination IC for black/white TV

TDA8303

TDA8303A

S

ECOND CONTROL LOOP

(

POSITIVE EDGE

)

control sensitivity

note 22

100

t

d

control range

25

µ

s

P

HASE ADJUSTMENT

(

VIA SECOND CONTROL LOOP

)

control sensitivity

25

µ

A/

µ

s

α

maximum allowed phase shift

±

2

µ

s

H

ORIZONTAL OSCILLATOR

f

fr

free running frequency

R = 34.3 k

;

C = 2.7 nF

15625

Hz

f

spread with fixed external components

4

%

f

fr

frequency variations with supply voltage from
9.5 to 13.2 V

2

%

f

T

frequency variation with temperature

note 25

1.6

Hz/

°

C

f

fr

maximum frequency deviation at start of
horizontal output

10

%

f

frequency variation when only noise is
received

note 25

500

Hz

H

ORIZONTAL OUTPUT

(

PIN

26;

OPEN COLLECTOR

)

V

26

output limiting voltage

16.5

V

V

OL

LOW level output voltage

I

sink

= 10 mA

0.2

0.5

V

I

sink

maximum sink current

10

mA

duty factor of output signal

46

%

t

r

rise time of output pulse

260

ns

t

f

fall time of output pulse

100

ns

H

ORIZONTAL FLYBACK INPUT

(

PIN

27)

I

27

required input current during flyback pulse

0.01

1.0

mA

C

OINCIDENCE DETECTOR

V

22

voltage for in-sync condition

9.8

V

V

22

voltage for no-sync condition

no signal

1.5

V

V

22

switching level to the phase detector from fast
to slow

6.2

6.7

7.2

V

V

22

hysteresis slow to fast

0.6

V

V

22

switching level to activate the mute function
(transmitter identification)

2.5

2.8

3.1

V

V

22

hysteresis mute function

2

V

t

d

delay of mute release after transmitter
insertion

300

µ

s

allowable load on pin 22

10

µ

A

V

22

external video mode

0.7

V

I

22

current at pin 22

V

22

= 0 V

0.8

mA

SYMBOL

PARAMETER

CONDITIONS

MIN.

TYP.

MAX.

UNIT

δ

t

d

δ

t

o

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