M52347SP Ver la hoja de datos (PDF) - MITSUBISHI ELECTRIC
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M52347SP Datasheet PDF : 13 Pages
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DESCRIPTION OF PIN
Pin No.
Name
Pin voltage
1
H.STATE
0 VDC or
5 VDC
2
V.STATE
0 VDC or
5 VDC
CLAMP ≈2.2V when
3
SW
open
MITSUBISHI ICs (Monitor)
M52347SP/FP
SYNC SIGNAL PROCESSOR
Peripheral circuit of pins
2 0 kΩ
1
Same as pin 1
0.1mA
3.1V
1.3V
20kΩ 20kΩ
28kΩ
3
22kΩ
Description of function
Logic output pin for horizontal synchro-
nous signal
When pin 6 input signal is POSI, outputs
"H"; when NON, outputs "L"; and when
NEG, outputs "H".
Logic output pin for vertical synchronous
signal
When pin 8 input signal is POSI, outputs
"H"; when NON, outputs "L"; and when
NEG, outputs "H".
This SW is available to change the gener-
ating position of clamp pulse for input sig-
nal. (See Table 2.)
VTH L =0 to1V
VTH M =1.6 to 2.8V
VTH H =3.4 to 5V
GREEN ≈2.8V when
4
IN
open
5
GND
3.5V
1kΩ 1kΩ
4
GREEN (SYNC ON VIDEO) input pin
Input with negative sync.
Comparison of pin 4 input signal and ref-
erence voltage within the IC performs
synchronous separation.
Grounding
20kΩ
1.5kΩ1.5kΩ
Composite sync/H sync input pin.
Bias is approx. 2.5V and impedance is
10kΩ.
COMP/H ≈2.5V when
6
IN
open
6
10kΩ
2.8V
10kΩ
2.5V
20kΩ
10kΩ
2.2V
The internal double threshold comparator
is used for shaping waveform and detect-
ing polarity. Optimum input amplitude is
0.6 Vp-p at pin 6 . Up to approx. 50% of
duty, waveform shaping and polarity
detection can be done.
0.3mA
0.3mA
7
COMP/H
DET
≈2.5V when 7
open (no sig-
nal)
12kΩ
12kΩ
75kΩ
External capacitance is required as a fil-
ter pin for detecting polarity and detecting
non-input. As the value is larger, the rip-
ple is smaller and less malfunction
2.5V occurs. However, this lowers the
response speed of detection.
2.8V
20kΩ
20kΩ
2.2V
8
V IN
≈2.5V when
open
≈2.5V when
9
V DET
open
(no signal)
Same as pin 6
Same as pin 7
V sync input pin
Same as pin 6
Same as pin 7
7
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