M52347FP [MITSUBISHI]
SYNC SIGNAL PROCESSOR; SYNC信号处理器
| 型号： | M52347FP |
| 厂家： | 
Mitsubishi Group |
| 描述： | SYNC SIGNAL PROCESSOR |
| 文件： | 总13页 (文件大小：134K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
MITSUBISHI ICs (Monitor)
M52347SP/FP
SYNC SIGNAL PROCESSOR
DESCRIPTION
PIN CONFIGURATION (TOP VIEW)
The M52347 automatically selects three types of synchronous
signals containing separate sync (positive and negative polarities of
0.5 to 2.5 VP-P), composite sync (positive and negative polarities of
0.5 to 2.5 VP-P) and sync-on-video (sync negative polarity), and
performs waveform shaping. The IC is optimum to synchronous
signal processing for multi-scan type display monitor.
H. STATE
1
2
3
4
20
19
CLAMP TIMING
Y. POL.
V. STATE
CLAMP SW
GREEN IN
18 H. POL.
17
CLAMP+ OUT
FEATURES
5
6
16
15
14
13
12
11
GND
VCC
• Low power consumption with supply voltage of 5V
HD- OUT
HD+ OUT
VD+ OUT
V S/S OUT
V S/S IN
COMP/H IN
• Capable of obtaining output information on whether to input syn-
chronous signal, and on polarity
7
COMP/H DET
V IN
• Output of clamp pulse
8
• Equipped with V TIME GATE SW that enables selecting whether
V DET
9
14 15
/
or not VD portion pulse is output from pin
.
• Equipped with CLAMP SW that enables switching the clamp
10
V TIME GATE SW
pulse output position.
Outline 20P4B(SP)
20P2N-A(FP)
APPLICATION
Display monitor
RECOMMENDED OPERATING CONDITION
Supply voltage range..............................................Vcc=4.5 to 5.5V
Rated Supply voltage............................................................Vcc=5V
BLOCK DIAGRAM
CLAMP
TIMING
CLAMP+
OUT
HD-
HD+
VD+
V S/S
OUT
V S/S
Y. POL.
19
H. POL.
18
VCC
16
OUT
OUT
OUT
IN
15
14
13
12
11
20
17
EDGE
SW
CLAMP
GET
V. TIME
GATE
V. SYNC
SEP
LOGIC
LOGIC
SYNC
SEP
H
H
DET
V
V
DET
SHAPE
SHAPE
1
2
3
4
5
10
6
8
7
9
H. STATE V. STATE
GREEN
IN
GND
COMP/H
IN
COMP/H
DET
V IN
V DET V TIME GATA
SW
CLAMP
SW
1
MITSUBISHI ICs (Monitor)
M52347SP/FP
SYNC SIGNAL PROCESSOR
ABSOLUTE MAXIMUM RATINGS (Ta=25˚C, unless otherwise noted)
Symbol
VCC
Parameter
Ratings
6.0
Unit
V
Supply voltage
Pd
Power dissipation
1237.6(SP),827.8(FP)
±200
mW
V
Surge
Topr
Electrostatic discharge
Operating temperature
Storage temperature
-20 to +85
-40 to +150
˚C
Tstg
˚C
ELECTRICAL CHARACTERISTICS (Ta=25˚C, Vcc=12V, unless otherwise noted)
TP
In
put
pin
Out
put
pin
Relay condition
Limits
condition
Symbol
Parameter
ICC
Input condition
Output waveform
Note
Unit
4
2
6
2
8
2
16
2
3
10
Min. Typ. Max.
Circuit
current
16
6
5V 5V
A
40 53 66 mA
50kHz
1VP-P
0V
1µS
1
Pin output
2.5V
5V
1
1 OH
2
2
2
2
2
2
2
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
2
1
1
1
1
1
1
1
1
1
1
5V
DC
DC
DC
DC
DC
DC
DC
DC
4.0 5.0 5.0
V
V
V
V
V
V
V
V
V
V
Hi level
50kHz
1VP-P
8
1µS
50kHz
0.2VP-P
0.2 VP-P of
6
8
0V
1µS
input
1
Pin output
2.5V
5V
1
1 OL
5V
0
0.04 0.5
signal is equiv-
alent to NON
SYNC.
Low level
50kHz
1.0VP-P
1µS
50kHz
1VP-P
6
8
0V
1µS
2
Pin output
2.5V
5V
2
2 OH
5V
4.0 5.0 5.0
Hi level
50kHz
1VP-P
1µS
50kHz
1.0VP-P
0.2 VP-P of
input
signal is equiv-
alent to NON
SYNC.
6
8
0V
1µS
2
Pin output
2.5V
5V
2
2 OL
5V
0
0.04 0.5
Low level
50kHz
0.2VP-P
1µS
50kHz
1VP-P
6
8
0V
1µS
18
Pin output
2.5V
5V
18
18
19
19
14
14
18 OH
18 OL
19 OH
19 OL
14 OH
14 OL
5V
4.0 5.0 5.0
Hi level
50kHz
1VP-P
1µS
50kHz
1VP-P
6
8
0V
1µS
18
Pin output
2.5V
5V
5V
0
0.04 0.5
Low level
50kHz
1VP-P
1µS
50kHz
1VP-P
6
8
0V
1µS
19
Pin output
2.5V
5V
5V
4.0 5.0 5.0
Hi level
50kHz
1VP-P
1µS
50kHz
1µS
6
8
0V
19
1VP-P
Pin output
2.5V
5V
5V
0
0.04 0.5
Low level
50kHz
1VP-P
1µS
50kHz
0.6VP-P
4
6
1µS
0V
14
Pin output
V Meas
2.5V
5V
5V
4.0 5.0 5.0
Hi level
50kHz
2VP-P
1µS
50kHz
1µS
4
6
0V
14
0.6VP-P
Pin output
2.5V
5V
5V
0
0.25 0.5
Low level
50kHz
2VP-P
1µS
V Meas
2
MITSUBISHI ICs (Monitor)
M52347SP/FP
SYNC SIGNAL PROCESSOR
ELECTRICAL CHARACTERISTICS (cont.)
TP
In
put
pin
Out
put
pin
Relay condition
Limits
condition
Symbol
Parameter
Input condition
50kHz
Output waveform
Note
Unit
4
6
8
16
3
10
5V
Min. Typ. Max.
4
6
0V
2.5V
5V
1µS
V Meas
15
0.6VP-P
Pin output
15
15
17
17
13
13
12
12
15 OH
1
1
2
1
4.0 5.0 5.0
V
V
V
V
V
V
V
V
Hi level
50kHz
2VP-P
1µS
50kHz
0.6VP-P
4
6
1µS
0V
2.5V
5V
15
Pin output
15 OL
17 OH
17 OL
13 OH
13 OL
12 OH
12 OL
1
1
1
2
2
1
1
1
1
1
2
2
1
1
2
2
2
1
1
2
2
1
1
1
1
1
1
1
5V
5V
5V
5V
5V
5V
5V
0
0.25 0.5
Low level
50kHz
2VP-P
1µS
V Meas
V Meas
50kHz
0.6VP-P
4
6
1µS
0V
2.5V
5V
17
Pin output
4.0 5.0 5.0
Hi level
50kHz
2VP-P
1µS
50kHz
0.6VP-P
4
6
1µS
0V
2.5V
5V
17
Pin output
0
0.25 0.5
Hi level
50kHz
2VP-P
V Meas
V Meas
1µS
0V
2.5V
5V
13
50kHz
1µS
Pin output
8
8
4.0 5.0 5.0
Hi level
2VP-P
0V
2.5V
5V
13
50kHz
2VP-P
Pin output
0
0.25 0.5
1µS
Low level
V Meas
V Meas
50kHz
0.6VP-P
4
6
0V
2.5V
5V
1µS
12
Pin output
4.0 5.0 5.0
Hi level
50kHz
2VP-P
1µS
50kHz
0.6VP-P
4
6
0V
2.5V
5V
1µS
12
Pin output
0
-
0.25 0.5
Low level
50kHz
2VP-P
V Meas
1µS
Must not oper-
ate when input
amplitude is
0.05 VP-P or
less. (Pseudo
noise signal)
Sync-Sep
14
15
17
Sync input
signa Max.
noise ampli-
tude voltage
0V
2.5V
5V
50kHz
0.05VP-P
No pulse must be
output.
4
4
SS-NV
SS-LV
1
1
2
2
2
2
1
1
5V
5V
-
-
0.05 VP-P
1µS
Sync-Sep
Sync input
signal
50kHz
Must operate
when the input
amplitude is
0.2 VP-P or
more.
14
0V
2.5V
5V
50kHz
1µS
0.2
-
VP-P
No pulse must be
0.2VP-P
Min. ampli-
tude voltage
17 output in this por-
tion.
Checking output
pulse for output
with a voltage of
5 VDC applied,
decrease the DC
voltage and then
measure the volt-
age when the
14
DC voltage must
be applied.
3
6
CLAMP SW
Threshold
voltage H
17
V3H
V3L
2
2
1
1
2
2
1
1
5V
5V
2.8 3.1 3.4
V
15
50kHz
1µS
output pulse is
not output.
2VP-P
Checking output
pulse for output
with a voltage of
0 VDC applied,
increase the DC
voltage and then
measure the volt-
age when the
14
17
DC voltage must
be applied.
CLAMP SW
Threshold
voltage H
Variable
3
6
1.0 1.3 1.6
V
V
15
50kHz
2VP-P
1µS
output pulse is
not output.
50kHz
2VP-P
Checking output
pulse for output
with a voltage of
5 VDC applied,
decrease the DC
voltage and then
measure the volt-
age when the
1µS
6
8
V TIME
14
15
50kHz
2VP-P
GATE SW
Threshold
voltageVari-
able
0V
5V
1µS
V10
2
1
1
1
2.0 2.5 3.0
10
DC voltage must
be applied.
output pulse
becomes narrow.
3
MITSUBISHI ICs (Monitor)
M52347SP/FP
SYNC SIGNAL PROCESSOR
ELECTRICAL CHARACTERISTICS (cont.)
TP
In
put
pin
Out
put
pin
Relay condition
Limits
condition
Symbol
Parameter
Input condition
50kHz
Output waveform
Note
Unit
4
6
8
16
3
10
5V
Min. Typ. Max.
6
Input (50%)
4
6
1µS
0V
5V
+
Time
Meas
0.6VP-P
HD -delay
+
14
14
14
14
15
15
15
15
17
17
17
17
1
1
2
1
-
-
-
-
-
-
-
-
-
-
-
120 350 nsec
HD -DA
50kHz
2VP-P
time (A)
1µS
14
Output (50%)
50kHz
0.6VP-P
6
Input (50%)
Time
Meas
4
6
1µS
0V
5V
+
HD -delay
+
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
2
2
2
2
2
2
2
2
2
2
1
1
1
1
1
1
1
1
1
1
1
5V
5V
5V
5V
5V
5V
5V
5V
5V
5V
5V
80 350 nsec
140 350 nsec
120 350 nsec
70 350 nsec
120 350 nsec
100 350 nsec
150 350 nsec
90 350 nsec
130 350 nsec
90 350 nsec
HD -DB
50kHz
2VP-P
time (B)
1µS
14
Output (50%)
50kHz
0.6VP-P
4
Input (50%)
4
6
1µS
+
Time
Meas
HD -delay
+
2.5V
2.5V
HD -DC
50kHz
2VP-P
time (C)
1µS
14
Output (50%)
50kHz
0.6VP-P
4
nput (50%)
Time
Meas
Output (50%)
4
6
1µS
+
HD -delay
+
HD -DD
50kHz
2VP-P
time (D)
1µS
14
50kHz
0.6VP-P
6
nput (50%)
4
6
0V
5V
1µS
-
Time
Meas
HD -delay
-
HD -DA
50kHz
2VP-P
time (A)
1µS
15
Output (50%)
50kHz
0.6VP-P
Time
Meas
6
nput (50%)
4
6
0V
5V
1µS
-
HD -delay
-
HD -DB
50kHz
2VP-P
time (B)
1µS
Output 15 (50%)
50kHz
1µS
4
Input (50%)
4
6
-
Time
Meas
0.6VP-P
HD -delay
-
2.5V
2.5V
0V
HD -DC
50kHz
2VP-P
time (C)
1µS
15
Output (50%)
50kHz
0.6VP-P
4
Input (50%)
4
6
1µS
-
HD -delay
Time
Meas
-
HD -DD
50kHz
2VP-P
time (D)
1µS
15
Output (50%)
50kHz
0.6VP-P
6
nput (50%)
Time
Meas
4
6
1µS
+
CP -delay
+
CP -DA
50kHz
2VP-P
time (A)
1µS
17
Output (50%)
50kHz
0.6VP-P
4
nput (50%)
Time
Meas
4
6
1µS
+
CP -delay
+
2.5V
5V
CP -DB
50kHz
2VP-P
time (B)
1µS
17
Output (50%)
50kHz
0.6VP-P
6
nput (50%)
4
6
1µS
+
Time
Meas
CP -delay
+
CP -DC
50kHz
2VP-P
time (C)
1µS
17
Output (50%)
50kHz
0.6VP-P
Time
Meas
4
6
1µS
0V
2.5V
5V
+
CP -PULSE
+
250 400 550 nsec
CP -PW
50kHz
2VP-P
-WIDTH
1µS
17
Output (50%)
4
MITSUBISHI ICs (Monitor)
M52347SP/FP
SYNC SIGNAL PROCESSOR
ELECTRICAL CHARACTERISTICS (cont.)
TP
In
put
pin
Out
put
pin
Relay condition
Limits
condition
Symbol
Parameter
Input condition
50kHz
Output waveform
Note
Unit
4
6
8
16
3
10
5V
Min. Typ. Max.
8
Input (50%)
0V
2.5V
5V
+
Time
Meas
VD -delay
+
8
8
13
13
2
2
1
1
-
-
100 350 nsec
VD -DA
1µS
2VP-P
time (A)
13
Output (50%)
8
Input (50%)
Time
Meas
Output (50%)
0V
2.5V
5V
+
50kHz
2VP-P
VD -delay
+
2
2
2
1
1
2
1
1
5V
0V
70 350 nsec
1µS
VD -DB
time (B)
13
Checking output
pulse for output
with a voltage of
0 VDC applied,
increase the DC
voltage and then
measure the volt-
age when the
50kHz
2VP-P
14
15
14
15
1µS
6
V Sync-Sep
Threshold
voltage H
0V
5V
V11H
V11L
3.0 3.5 4.0
V
V
11
DC voltage must
be applied.
output pulse is
not output.
Checking output
pulse for output
with a voltage of
5 VDC applied,
decrease the DC
voltage and then
measure the volt-
age when the
output pulse is
output.
50kHz
1µS
2VP-P
6
V Sync-Sep
Threshold
voltage L
0V
5V
2
1
2
1
0V
1.3 1.8 2.3
11
DC voltage must
be applied.
5
MITSUBISHI ICs (Monitor)
M52347SP/FP
SYNC SIGNAL PROCESSOR
TEST CIRCUIT
V11
V10
100p
43k
V TIME
111
12
10
9
V S/S IN
GATA SW
10µ
V S/S OUT
V DET
V IN
2
4.7µ
R8
13 VD+ ONT
8
7
6
5
TP13
TP14
TP15
1
0.0068µ
4.7µ
HD+ OUT
14
COMP/H DET
COMP/H IN
GND
2
1
R6
HD- OUT
15
2
1
16
VCC
5V
0.01µ
47µ
TP17
R16
2
75k
R4
CLAMP+ OUT
H. POL.
17
18
19
GREEN IN
CLAMP SW
4
3
2
3.3µ
1
TP18
TP19
V3
V. POL.
V. STATE
TP2
TP2
4.3k
CLAMP
TIMING
1
20
H. STATE
TP1
220p
: 5V
Units Resistance : Ω
Capacitance : F
6
MITSUBISHI ICs (Monitor)
M52347SP/FP
SYNC SIGNAL PROCESSOR
DESCRIPTION OF PIN
Pin No.
Name
Pin voltage
Peripheral circuit of pins
Description of function
Logic output pin for horizontal synchro-
nous signal
20kΩ
0 VDC or
5 VDC
1
H.STATE
6
1
When pin input signal is POSI, outputs
"H"; when NON, outputs "L"; and when
NEG, outputs "H".
Logic output pin for vertical synchronous
signal
0 VDC or
5 VDC
2
1
V.STATE
8
Same as pin
When pin input signal is POSI, outputs
"H"; when NON, outputs "L"; and when
NEG, outputs "H".
0.1mA
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
28kΩ
3.1V
1.3V
CLAMP
SW
≈2.2V when
open
3
3
VTH H =3.4 to 5V
22kΩ
20kΩ 20kΩ
GREEN (SYNC ON VIDEO) input pin
Input with negative sync.
GREEN
IN
≈2.8V when
open
4
4
Comparison of pin input signal and ref-
1kΩ
erence voltage within the IC performs
synchronous separation.
1kΩ
3.5V
4
5
GND
Grounding
1.5kΩ
1.5kΩ
20kΩ
Composite sync/H sync input pin.
Bias is approx. 2.5V and impedance is
10kΩ.
The internal double threshold comparator
is used for shaping waveform and detect-
ing polarity. Optimum input amplitude is
0.6 Vp-p at pin . Up to approx. 50% of
duty, waveform shaping and polarity
detection can be done.
COMP/H
IN
≈2.5V when
open
6
20kΩ
10kΩ
6
6
10kΩ
2.5V
10kΩ
2.8V
2.2V
0.3mA
0.3mA
12kΩ
12kΩ
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
occurs. However, this lowers the
75kΩ
COMP/H
DET
≈2.5V when
open (no sig-
nal)
7
7
2.5V
response speed of detection.
2.2V
2.8V
20kΩ
20kΩ
V sync input pin
≈2.5V when
8
9
6
V IN
Same as pin
open
6
Same as pin
≈2.5V when
open
(no signal)
7
7
V DET
Same as pin
Same as pin
7
MITSUBISHI ICs (Monitor)
M52347SP/FP
SYNC SIGNAL PROCESSOR
DESCRIPTION OF PIN (cont.)
Pin No.
Name
Pin voltage
Peripheral circuit of pins
0.1mA
Description of function
V TIME GATE SW pin
Can select whether to output the pulse of
14 15
,
VD portion from pin
output pluse.
The threshold voltage is approx. 2.5V.
VTH L=0 to 2V
VTH H=3 to 5V
V.TEME
GATE SW
≈3.2V when
open
10
10
2.5V
30kΩ
20kΩ
V S/S IN pin
Inputs a signal of having externally inte-
grated composite sync for V sync separa-
tion.
4kΩ
0.1mA
7.5kΩ
11
V S/S
IN
1kΩ
1kΩ
11
5.5kΩ
1.75kΩ
20kΩ
0.2mA
0.2mA
V S/S pulse output pin
1kΩ
No problem occurs when current of
approx. 6 mA flows to internal part of the
IC. To improve the rising speed, connect
a resistance between power supplies.
V S/S
OUT
12
12
+
VD pulse output pin
+
13
14
12
12
12
Same as pin
Same as pin
Same as pin
VD OUT
12
Same as pin
+
HD pulse output pin
+
HD OUT
12
Same as pin
-
HD pulse output pin
-
15
16
17
HD OUT
12
Same as pin
VCC
5V
Power supply
+
+
CLAMP pulse output pin
Same as pin
CLAMP
OUT
12
1
Same as pin
Same as pin
12
Logic output pin for horizontal synchro-
nous signal
When pin input signal is POSI, outputs
"L"; when NON, outputs "L"; and when
NEG, outputs "H".
0 VDC or
5 VDC
18
19
H.POL.
6
Logic output pin for vertical synchronous
signal
When pin input signal is POSI, outputs
"L"; when NON, outputs "L"; and when
NEG, outputs "H".
0 VDC or
5 VDC
1
V.POL.
8
Same as pin
CLAMP TIMING pin
The clamp pulse width is determined
depending on the external resistance and
capacitance. As the resistance value and
capacitance value are larger, the clamp
pulse width is wider.
4kΩ
4kΩ
3.0V
CLAMP
TIMING
20
3V
1.9V
20
1.9V
0.4mA
0.2mA
8
MITSUBISHI ICs (Monitor)
M52347SP/FP
SYNC SIGNAL PROCESSOR
Table 1 DECODER Logic Output
Table 2 Clamp Pulse Position
Output pin
Input signal
Pin 17 output signal
6
8
Pin input
Pin Input
COMP/H
V
1
2
18
19
4
6
3
3
3
Pin
Pin
Pin "H"
Pin "M"
Pin "L"
NON
POSI.
NEG.
H
H
H
L
H
H
L
L
L
L
L
H
4 trailing
edge
4 trailing
edge
4 trailing
edge
POSI.
6 leading
edge
4 trailing
edge
6 trailing
edge
NON
POSI.
NEG.
H
H
H
L
H
H
H
H
H
L
L
H
NEG.
NON.
6 leading
edge
6 trailing
edge
NON
POSI.
NEG.
L
L
L
L
H
H
L
L
L
L
L
H
Table 3 Output Priority Order
Output signal
Input signal
Pin
3
3
"H" "L"
Pin "M"
4
6
8
12 14 15 17
13
12 14 15 17
13
Pin
Pin
Pin
Pins
,
,
,
Pin
Pins
,
,
,
Pin
4
11
11
8
4
11
11
8
4
4
4
6
4
6
8
8
6
6
11
8
8
8
8
Table 4 Allowable Input Amplitude Voltage
VV 0 to 2.1(VP-P)
4
Pin input
amplitude
fH=10Hz to 200kHz
fV=10Hz to 200Hz
VS 0.2 to 0.6(VP-P)
6
Pin input
VS 0.5 to 2.5(VP-P)
amplitude
fH=10Hz to 200kHz
fV=10Hz to 200Hz
8
Pin input
VS 0.5 to 2.5(VP-P)
amplitude
9
MITSUBISHI ICs (Monitor)
M52347SP/FP
SYNC SIGNAL PROCESSOR
APPLICATION METHOD
1. Input block
18kΩ
3
1) GREEN (SYNC ON VIDEO) IN (Pin
)
pin
6
Input signal
Input with sync negative polarity.
or pin
8
100Ω
3kΩ
4
Comparison of pin
input signal and the reference voltage of
the inside of the IC performs the synchronous separation. When
4
This additional circuit (limiter) limits
the amplitude to 0.6 VP-P.
the input at pin
is less than or equal to the reference voltage
: 5V
(2.8V) and the flowing current is more than or equal to the input
Fig. 4
sensitivity current (200 µ A or more), the signal is separated.
4
When only a synchronous signal is input into pin
, the
30
25
20
15
10
operatable amplitude and the duty are as shown in Figure 1.
If the IC does not operate normally with the video signal input,
change the value of external resistance R to make the current
optimum.
R=56kΩ
But, when capacity value is too big, output response
becomes bad.
R=75kΩ
6
8
2) COMP/H IN, VIN (pins
and
)
3.3µ
6
The composite sync input is connected to pin . H and V of the
4
6
8
separate sync input are connected to pins
and
,
R
5
0
f=100kHz
0.2
6
8
respectively. For each of pins
and , the bias is 2.5V and the
impedance is 10 kΩ. The internal double threshold converter is
used for shaping waveform and for detecting polarity.
Average DC voltage of input signal is 2.5V. Each threshold
voltage is set at a voltage ±0.3V away from this voltage.
6
0
0.4
0.6
0.8
1.0
Input Amplitude (VP-P)
Fig. 1
If the duty ratio at pin
is small as shown in Figure 2, the
50
40
30
20
10
0
optimum value is approx. 0.3 VP-P. If the duty ratio is large, the
optimum value is approx. 0.6 VP-P. Figure 3 shows the allowable
input amplitude and the reference value of duty test.
Only 5V TTL input, decrease the amplitude by resistor
splitting.
In addition, Figure 4 shows an example for improving the
capability of the allowable duty when the input amplitude is 0.7
VP-P or more.
To use the IC out of the standard value, remove the filter from
7
9
pins
and , observe the waveform and check for a match
with the waveform shown in Figure 5.
0
0.5
1
1.5
2
2.5
Input Amplitude (VP-P)
2.8V
2.5V
2.2V
Fig. 3
4.5V
NEG input
Small POSI Duty
Lsrge NEG Duty
2.5V
2.5V
Fig. 2
POSI input
0.5V
Fig. 5
10
MITSUBISHI ICs (Monitor)
M52347SP/FP
SYNC SIGNAL PROCESSOR
7
8
when COMP/H only is input or when both COMP/H and GREEN
are input.
3) Polarity detection and non-input detection (pins
and
)
External capacitance is required as a filter pin to detect polarity
and non-input. As the value is larger, the ripple is smaller and
less malfunction occurs. However, the response speed for
detection is lower. A sufficient external capacitance is 0.05 µF
with input of 15 kHz and 10 uF with input of 60 kHz. However,
check the frequency of the input signal in use and the filter pin
waveform with the duty ratio conditions, and then check that the
value is 3.1V or more (2.8V in capability) with positive polarity
input and 1.9V or less (2.2V in capability) with negative polarity
input.
8
6
4
R=10kΩ
2
11
4) V S/S IN (pin
)
R=4.3kΩ
Input a signal of having externally integrated composite sync for
V sync separation.
0
10
100
1000
6
12
12
Composite sync input into pin
is output to pin . Output at
Clamp Timing Capacitance at Pin
(pF)
20
11
is externally integrated and is input into pin
for V sync
11
separation. With the waveform at pin
element has been fully dropped.
, check that the H
3. Sampling Pulse from VD Portion
The threshold levels of sync separation, given hysteresis, are
3.5V and 1.8V.
10
V TIME GATE SW (Pin
)
14
15
Whether to output the pulse of VD portion from pins
and
10
can be selected. When pin
portion is output. When pin
is not output.
is "H" or OPEN, pulse of the VD
is "L", the pulse of the VD portion
Input waveform at
10
pin
6
Waveform at
pin
11
VTH=3.5V
VTH=1.8V
14
Output at pin
when the pin 10 is "H" or OPEN
Output waveform at
pin
13
2. Clamp Pulse
VD portion
1) Clamp pulse width
20
CLAMP TIMING (Pin
)
The clamp pulse width is determined by the external resistance
and the capacitance. As the resistance value and capacitance
value are larger, the clamp pulse width is wider.
Output at pin
when pin
is "L"
14
10
10
Output at pin 15 when pin
is "H" or OPEN
The time constant is determined by the current flowing out of pin
20
and the capacitance value of the timing pin. The flow current
20
at pin
is determined by the pin voltage and external resistance
value. When the external resistance is 4.3 Ω (that is 700 uA) and
VD portion
the external capacitance is 220 pF, the pulse width is 0.4 usec.
2) Clamp pulse position
3
CLAMP SW (pin
)
Output at pin
when pin
is "L"
10
15
3
When pin
is "M" or "L", fixing a higher-priority signal to the
trailing edge results in occurrence of a clamp pulse. When pin 3
is 'H", and only GREEN is input, clamp pulse occurs at the
trailing edge. A clamp pulse also occurs at the leading edge
11
MITSUBISHI ICs (Monitor)
M52347SP/FP
SYNC SIGNAL PROCESSOR
4. Output Stage
1
2
18
19
1) Logic output (pins
,
,
and
)
The output format is as shown in the diagram below.
When the internal load resistance of the IC is 20 kΩ, a current of
approx. 3 mA flows to the inside of the IC, no problem will occur.
0.8
0.6
0.4
0.2
0
20kΩ
12 13 14 15
17
2) Pulse output (pins
,
,
,
,and
)
The output format is as shown in the diagram below.
When the internal load resistance of the IC is 1 kΩ, a current of
approx. 6 mA flows to the inside of the IC, no problem will occur.
To improve the rising speed, connect a resistance between
power supplies. Note that the low level of the output pulse goes
up.
0
2
4
6
6
10
∞
External Resistance (kΩ)
1kΩ
TYPICAL CHARACTERISTICS
(MAXIMUM RATING)
THERMAL DERATING
1400
1237.6
1200
1000
SP
827.8
800
643.6
FP
600
400
430.5
200
0
85
100 125 150
-20
0
25
50
75
AMBIENT TEMPERATURE Ta (˚C)
12
MITSUBISHI ICs (Monitor)
M52347SP/FP
SYNC SIGNAL PROCESSOR
APPLICATION EXAMPLE (fH=50kHz, fV=80 Hz)
13
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