MITSUMI
No-adjustment Sync Separator + Sync Detector MM1067
No-adjustment Sync Separator + Sync Detector
Monolithic IC MM1067
Outline
This IC is a no-adjustment sync separator + sync detector designed for use in VCR, TV and other video
equipment.
Features
1. Sync separator with AFC (ceramic resonator means no adjustment required)
2. Composite and sync output pins
3. Sync detection circuit (used for blue-back switching or tuner automatic channel selection, etc.)
4. Power supply voltage V
CC
=5V
5. Ceramic resonator can be selected for use in either PAL or NTSC
Package
SOP-16A (MM1067XF)
DIP-16A (MM1067XD)
Applications
1. TV
2. VCR
3. Other video equipment
Block Diagram
Pin no.
Pin name
Internal equivalent circuit diagram Pin no.
Pin name
Internal equivalent circuit diagram
MITSUMI
No-adjustment Sync Separator + Sync Detector MM1067
Pin Description
1
Video IN
3
H.SYNC
2
NC
4
V.INT
5
V.SYNC
6
C.SYNC
7
CR
8
GAIN
9
SYNC.DET
12
OSC-OUT
10
NC
11
GND
13
OSC-IN1
14
OSC-IN2
15
LPF
16
V
CC
MITSUMI
No-adjustment Sync Separator + Sync Detector MM1067
Absolute Maximum Ratings
(Ta=25C)
Electrical Characteristics
(Except where noted otherwise, Ta=25C, V
CC
=5.0V, X=CSB503F2,
R=390 [OHM], C=3300pF, SW1=OFF)
Item
Symbol
Ratings
Units
Storage temperature
T
STG
-40~+125
C
Operating temperature
T
OPR
-20~+75
C
Power supply voltage
V
CC
max
7
V
Allowable loss
P
D
450
*
1
mW
Item
Symbol
Measurement
Measurement conditions
Min. Typ. Max. Units
circuit
Operating power supply voltage
V
CC
V
CC
4.7
5.0
5.3
V
Consumption current
Id
Id
9.0 13.0 mA
Free-running frequency NTSC
f
O
1
TP1
15.534 15.734 15.934 kHz
Horizontal sync signal
f
CAP
1
TP1
V
IN
: signal 1
*
1
*
2
300 500
Hz
acquisition range NTSC
Free-running frequency PAL
f
O
2
TP1
X
=CSB500F40, R=200OHM
15.425 15.625 15.825 kHz
C
=4700pF
Horizontal sync signal
f
CAP
2
TP1
X
=CSB500F40, R=200OHM,
300 500
Hz
acquisition range PAL
C
=4700pF, V
IN
: signal 1
*
1
*
3
H. sync pulse width
t
W
1
TP1
V
IN
: signal 1, 15.734kHz
*
4
3.9
4.2
4.5
uS
H. sync delay time
td1
TP1
V
IN
: signal 1, 15.734kHz
*
4
0.7
1.2
1.7
uS
H. sync output voltage L
V
L
1
TP1
V
IN
: signal 1, 15.734kHz
*
4
0.2
0.4
V
H. sync output voltage H
V
H
1
TP1
V
IN
: signal 1, 15.734kHz
*
4
4.8
5.0
V
LPF pin DC level
V
LPF
TP7
SW1
: ON
0.9
1.4
1.9
V
Sync separation level
V
SEPA
V
IN
V
IN
: staircase wave 1V
P-P
*
5
20
50
80
mV
C. sync pulse width
t
W
2
TP4
V
IN
: staircase wave 1V
P-P
*
6
4.0
4.5
5.0
uS
C. sync delay tim
td2
TP4
V
IN
: staircase wave 1V
P-P
*
6
0.3
0.6
0.9
uS
C. sync output voltage L
V
L
2
TP4
V
IN
: staircase wave 1V
P-P
*
6
0.2
0.4
V
C. sync output voltage H
V
H
2
TP4
V
IN
: staircase wave 1V
P-P
*
6
4.8
5.0
V
V. sync pulse width
t
W
3
TP3
V
IN
: staircase wave 1V
P-P
*
7 150 190 230
uS
V. sync delay time
td3
TP3
V
IN
: staircase wave 1V
P-P
*
7
8.0 10.0 12.0 uS
V. sync output voltage L
V
L
3
TP3
V
IN
: staircase wave 1V
P-P
*
7
0.2
0.4
V
V. sync output voltage H
V
H
3
TP3
V
IN
: staircase wave 1V
P-P
*
7 4.8
5.0
V
V. sync switching voltage L
V
THL
3
TP2
TP2 : DC voltage, 5V Low
*
8 1.5
1.8
2.1
V
V. sync switching voltage H
V
THH
3
TP2
TP2 : DC voltage, 0V
High
*
8 2.3
2.6
2.9
V
Sync discrimination output voltage L
V
L
4
TP6
V
IN
: staircase wave 1V
P-P
0.2
0.4
V
Sync discrimination output voltage H
V
H
4
TP6
V
IN
: no input signal
4.8
5.0
V
Sync discrimination switching voltage L V
THL
4
TP5
TP5 : DC voltage 5 Low
*
9 2.0
2.3
2.6
V
Sync discrimination switching voltage H
V
THH
4
TP5
TP5 : DC voltage, 0V
High
*
9 2.7
3.0
3.3
V
Notes :
*
1 Signal 1 : Rectangular waveform signal with 0.3V amplitude and pulse width 4.7S
*
2 Measuring horizontal sync signal pull-in range for NTSC
With TP1 waveform not synchronized to signal 1, adjust signal 1 frequency toward 15.734kHz. The
measurement value is the smaller of the synchronized frequency and the difference from 15.734.
*
3 Measuring horizontal sync signal pull-in range for PAL
With TP1 waveform not synchronized to signal 1, adjust signal 1 frequency toward 15.625kHz. The
measurement value is the smaller of the synchronized frequency and the difference from 15.625.
Signal 1 waveform
4.7uS
*
Package : DIP-16A
MITSUMI
No-adjustment Sync Separator + Sync Detector MM1067
*
4 H. SYNC measurement
*
5 Measuring sync separation level
Gradually lower staircase wave signal sync tip level, and measure sync tip level when Pin 6 waveform
starts to change.
*
6 C. SYNC measurement
*
7 V. SYNC measurement
*
8 V. SYNC switching voltage measurement
Gradually change the DC voltage impressed on TP2, and measure TP2 voltage when TP3 output switches.
*
9 Sync discrimination switching voltage measurement
Gradually change the DC voltage impressed on TP5, and measure TP5 voltage when TP6 output switches.
Signal 1
TP1 waveform
t
w
1
t
d
1
V
H
1
V
L
1
Input video signal
(Horizontal sync signal portion)
TP4 waveform
t
w
2
t
d
2
V
H
2
V
L
2
Input video signal
(Vertical sync signal portion)
TP3 waveform
t
w
3
t
d
3
V
H
3
V
L
3
MITSUMI
No-adjustment Sync Separator + Sync Detector MM1067
Measuring Circuit
Note :
*
1
NTSC
PAL
X
CSB503F2
CSB500F40
R
390
220
C
3300pF
4700pF
Application Circuits
There is a momentary phase lag in the H. SYNC output vertical feedback interval. When using this IC for OSD
timing, characters at the top of the screen may bend due to IC deviation. If this happens, change the
resistance between Pins 13 and 14 as shown, and the bending will improve by several H from the top edge of
the screen.
Application Circuit 1
PDF 
ZIP