Philips TDA8303, TDA8303A

July 1992 10

Philips Semiconductors Preliminary speciﬁcation

Small signal combination IC for black/white TV TDA8303

TDA8303A

SECOND CONTROL LOOP (POSITIVE EDGE)

control sensitivity note 22 −100 −

tdcontrol range −25 −µs

PHASE ADJUSTMENT (VIA SECOND CONTROL LOOP)

control sensitivity −25 −µA/µs

αmaximum allowed phase shift −±2−µs

ORIZONTALOSCILLATOR

ffr free running frequency R = 34.3 kΩ;

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

Tfrequency variation with temperature note 25 −−1.6 −Hz/°C

∆ffr maximum frequency deviation at start of

horizontal output −−10 %

∆f frequency variation when only noise is

received note 25 −−500 Hz

HORIZONTALOUTPUT (PIN 26; OPEN COLLECTOR)

V26 output limiting voltage −−16.5 V

VOL LOW level output voltage Isink = 10 mA −0.2 0.5 V

Isink maximum sink current 10 −−mA

duty factor of output signal −46 −%

trrise time of output pulse −260 −ns

tffall time of output pulse −100 −ns

HORIZONTALFLYBACK INPUT (PIN 27)

I27 required input current during ﬂyback pulse 0.01 −1.0 mA

COINCIDENCE DETECTOR

V22 voltage for in-sync condition −9.8 −V

V22 voltage for no-sync condition no signal −1.5 −V

V22 switching level to the phase detector from fast

to slow 6.2 6.7 7.2 V

V22 hysteresis slow to fast −0.6 −V

V22 switching level to activate the mute function

(transmitter identiﬁcation) 2.5 2.8 3.1 V

V22 hysteresis mute function −2−V

tddelay of mute release after transmitter

insertion −−300 µs

allowable load on pin 22 −−10 µA

V22 external video mode −−0.7 V

I22 current at pin 22 V22 = 0 V −−0.8 mA

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

δtd

δto

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