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
H
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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