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BA7046 Fiches technique(PDF) 3 Page - Rohm

No de pièce BA7046
Description  SYNC separator IC with AFC
Download  7 Pages
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Fabricant  ROHM [Rohm]
Site Internet  http://www.rohm.com
Logo ROHM - Rohm

BA7046 Fiches technique(HTML) 3 Page - Rohm

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3
Multimedia ICs
BA7046 / BA7046F
Electrical characteristics (unless otherwise noted Ta = 25°C and VCC = 5.0V)
Parameter
Symbol Min.
Typ.
Max.
Unit
Conditions
IQ
2.0
4.1
6.2
mA
0.08
0.15
0.1
0.3
V
4.7
4.9
V
13.9
15.7
17.5
kHz
± 2.1 ± 2.9
kHz
THPH – 1.0
0
+ 1.0
µs
pin2
pin– 6
THVD
17.0
23.5
30.0
µs
pin4
pin– 2
THD
4.6
5.1
5.6
µs
pin2
TVD
190
230
270
µs
pin4
Vsyn-Min.
VP-L
VP-H
fH-O
VP-P
∆fCAP
pins 2, 4
Not designed for radiation resistance.
Quiescent current
Minimum synchronization separation level
Pulse voltage, LOW
Pulse voltage, HIGH
(Horizontal) free-running frequency
Capture range
Lock-in phase difference
HD, VD phase difference
HD pulse width
VD pulse width
pin 3 open
pin 6 terminated with 75
Ω resistor
pins 2, 4
No input signal, I1 = open
Measurement circuit
8
7
6
5
1
2
3
4
II
100p
130k
V
T
V
T
V
T
1
µ
1
µ
75
Video In
+
+
+
A
47
µ
0.022
µ
39k
VCC
2200p
470k
10k
VCC
Fig. 7
Circuit operation
(1) Synchronization separation circuit
Detects the charging current to a externally-connected
capacitor, and performs synchronization separation.
(2) Horizontal oscillation circuit
When a video signal is input, it is synchronized with
Hsync by the PLL. The horizontal free-running frequency
is determined by external resistor R1.
(3) Vertical synchronization separation circuit
When a video signal is input, synchronization signal
separation is done over the vertical synchronization
pulse interval.
fH-O =
[kHz]
2.05E6
R1


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