MITSUMI
Sync Detector MM1021
Sync Detector
Monolithic IC MM1021
Outline
This IC is a sync detection circuit for obtaining the best reception state on VCR and TV channel selection
systems. A system with high detection precision and no adjustment required can be configured due to the PLL
format using a ceramic resonator. It can also be used in OSD circuits for blue-back switching and the like.
Features
1. High precision due to use of PLL format
2. Ceramic resonator means no adjustment required
3. Ceramic resonator can be selected for use in either PAL or NTSC
4. Designed for use in video equipment channel selection systems
5. Can also be used as an OSD circuit for blue back switching, etc.
Package
SIP-10A (MM1021XS)
Applications
1. TV
2. VCR
3. Other video equipment
Block Diagram
MITSUMI
Sync Detector MM1021
Absolute Maximum Ratings
(Ta=25C)
Electrical Characteristics
(Except where noted otherwise, Ta=25C, V
CC
=9.0V, SW1=ON, SW2~SW7=1)
Item
Symbol
Ratings
Units
Storage temperature
T
STG
-40~+125
C
Operating temperature
T
OPR
-20~+75
C
Power supply voltage
V
CC
14.0
V
Allowable loss
Pd
500
mW
Item
Symbol
Measurement
Measurement conditions
Min. Typ. Max. Units
circuit
Operating power supply voltage range
V
CC
-
-
7.0
9.0
13.0
V
Consumption current
Id
-
SW1=OFF, SW7=2
6.5
11.0 mA
Comparator input
H
V
IH
TP8
SW6=2, TP5=H L
5.8
6.0
6.2
V
voltage
L
V
IL
TP8
SW6=2, TP5=L H
3.6
3.8
4.0
V
Comparator output
H
V
OH
TP5
SW6=2, TP8=3.0V
8.1
8.9
V
voltage
L
V
OL
TP5
SW6=2, TP8=6.5V
0
0.1
V
Free-running frequency
PAL
f
OP
TP1
500
kHz
NTSC
f
ON
TP1
SW3=SW4=2
503
kHz
Oscillation output voltage
V
O
TP1
1.9
V
P-P
Sync discrimination input level
V
IN
TP2
SW2=2, TP5=H L
-12
dB
Sync separation working current
I
IN
TP4
SW5=2, TP5=L H
100
125
150
A
Sync discrimination voltage
V8
H
TP8
SW2=2, TP2=0dB
7.2
V
V8
L
TP8
SW2=2, TP2=-20dB
0
V
Capture range
PAL
f
CP
TP3
SW2=3, SW4=1, TP5=H L
*
1
150
200
Hz
NTSC
f
CN
TP3
SW2=3, SW4=2, TP5=H L
*
1
150
200
Hz
Pin 7 output voltage
H
V7
H
TP7
SW2=2
*
2
0.87 0.90 0.93
V
L
V7
L
TP7
0.20 0.40
V
Pin 6 voltage
V6
TP6
SW5=3
6.7
V
Note :
*
1
Capture range : fcp, fcn
The smaller of fc1 and fc2 values are fcp and fcn.
Note :
*
2
fc
1
fc
2
f
OP
,f
ON
f
TP7
GND
V7
H
V7
L
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