Philips TDA8303A User Manual
Page 10
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
Ω
;
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
-------