TDA4691 Просмотр технического описания (PDF) - Philips Electronics
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TDA4691 Datasheet PDF : 26 Pages
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Philips Semiconductors
Sync Processor with Clock (SPC)
Preliminary specification
TDA4691
SYMBOL
t3
t4
t5
t5
t6
PARAMETER
time relation between pin 20 and
blanking
H-blanking time
start time H-pulse pin 20 to stop time
burstkey pin 6; 50 Hz
start time H-pulse pin 20 to stop time
burstkey pin 6; 60 Hz
V-blanking pulse; 50 Hz
t6
V-blanking pulse; 60 Hz
CONDITIONS
see Fig.9
see Fig.9
H-sync = 4.7 µs;
see Fig.9
see Fig.9
Integration (pin 5)
V5
no TV signal
TV signal
see Fig.16
see Fig.16
V5
slow time constant on
Signal identification (pin 4; open collector via R4 to V19 or V12)
V4
voltage pin 4, if no signal is identified I4 = 1 mA
I4 = 5 mA
V4
voltage pin 4, if signal is identified
I4
leakage current
Integration (pin 2; see Fig.15)
V2
no signal at pin 20
V2
noise at input pin 20
V2
switching T3 to T1 (delay 7 fields)
V2
switching T3 to T1
(noise and signal at input pin 20)
V2
release V-divider
hysteresis
V2
release time constant normal (T2)
signal identification at pin 4
hysteresis
V2
release noise detector
MIN.
3.5
TYP. MAX. UNIT
4.0
4.5 µs
−
11.8 −
µs
8.0
9.0
9.7 µs
7.5
8.6
9.2 µs
−
−2.5 to −
lines
+22.5
−
−3.0 to −
lines
+17
0
−
2
V
4
−
−
V
5
−
6.2 V
0
−
0.3 V
0
0.2
0.8 V
−
−
V19
V
−
−
50
µA
−
1.5
−
V
−
3
−
V
−
2.5
−
V
−
2.5
−
V
−
4
−
V
−
−0.2 −
V
−
5
−
V
−
−0.2 −
V
−
6.5
−
V
September 1993
11
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