MITSUMI
Sync Separator with AFC LVA519
Sync Separator with AFC
Monolithic IC LVA519
Outline
This is a sync separator IC with AFC. Stable operation even in a weak electric field is made possible with the
built-in AFC circuit. A regulator also is built in, providing stable operation relative to power supply and
temperature fluctuations.
Features
1. Supports AFC (horizontal sync signal)
2. AFC OFF function
3. Horizontal and vertical sync signal output pins
4. Power supply voltage
4.7V~5.3V
Package
SIP-9A (LVA519S)
SOP-14A (LVA519F)
Applications
1. TV
2. VCR
3. Other video equipment
Equivalent Circuit Diagram
SIP-9A
SOP-14A
MITSUMI
Sync Separator with AFC LVA519
Pin Description
(LVA519S)
Pin no.
Pin name
Function
Internal equivalent circuit diagram
1
VIDEO IN
Video signal input
2
V
CO
Free run frequency setting
3
PC OUT
Phase comparison output
4
C
FU
Integrates composite
signal and inputs to
vertical sync playback
circuit
MITSUMI
Sync Separator with AFC LVA519
5
GND
GND
6
C
OSC
Free run frequency
oscillation circuit
7
V
SYNC
Vertical sync signal output
8
H
SYNC
Horizontal sync signal
output
9
V
CC
Power supply
Pin Description
(LVA519F)
Pin no.
Pin name
Function
Internal equivalent circuit diagram
1
NC
2
VIDEO IN
Video signal input
3
V
CO
Free run frequency setting
MITSUMI
Sync Separator with AFC LVA519
4
PC OUT
Phase comparison output
5
C
FU
Integrates composite
signal and inputs to
vertical sync playback
circuit
8
C
OSC
Free run frequency
oscillation circuit
10
V
SYNC
Vertical sync signal output
11
H
SYNC
Horizontal sync signal
output
12
V
CC
Power supply
13
NC
14
NC
9
NC
6
NC
7
GND
GND
MITSUMI
Sync Separator with AFC LVA519
Absolute Maximum Ratings
(Ta=25C)
Item
Symbol
Ratings
Units
Storage temperature
T
STG
-40~+125
C
Operating temperature
T
OPR
-2~+75
C
Power supply voltage
V
CC
max.
7
V
Allowable loss
Pd
470 (SIP-9A)
350 (SOP-14A)
mW
Recommended Operating Conditions
(Ta=25C)
Item
Symbol
Min.
Typ.
Max.
Units
Recommended power supply
V
CC
4.7
5.0
5.3
V
voltage range
Recommended input
V
IN
0.8
2.0
3.2
V
P-P
signal voltage
Electrical Characteristics
(Except where noted otherwise, Ta=25C, V
CC
=5.0V, V
IN
=2.0V
P-P
)
Item
Symbol
Measurement conditions
Min. Typ. Max. Units
Consumption current
Id
Refer to Measuring Circuit
7.0
10
mA
Horizontal sync output (H)
V
HH
Refer to Measuring Circuit
4.9
5.0
V
Horizontal sync output (L)
V
HL
Refer to Measuring Circuit
0.2
0.4
V
Vertical sync output (H)
V
VH
Refer to Measuring Circuit
4.9
5.0
V
Vertical sync output (L)
V
VL
Refer to Measuring Circuit
0.2
0.4
V
Free-running frequency setting range
f
O
Refer to Measuring Circuit
14.5
17.0
kHz
Power supply fluctuation of
f
O
1
Refer to Measuring Circuit
300
%/V
free-running frequency
Free-running frequency temperature
f
O
2
Refer to Measuring Circuit
400
ppm/V
coefficient Capture range
Capture range
f
C
Refer to Measuring Circuit
1.0
1.3
kHz
Lock range
f
L
Refer to Measuring Circuit
1.9
2.5
kHz
AFC output delay time
td
Refer to Measuring Circuit
0.3
0.7
1.1
S
AFC output pulse width
P
W
Refer to Measuring Circuit
3.5
5.0
6.5
S
Schmitt trigger
(H)
Vth
H
Refer to Measuring Circuit
1.9
2.1
2.3
V
threshold
(L)
Vth
L
Refer to Measuring Circuit
1.1
1.3
1.5
V
Sync separation level
V
SEPA
Refer to Measuring Circuit
80
115
170
mV
AFC off resistance
R
AFC
Refer to Measuring Circuit
2.7
4.0
6.0
k
MITSUMI
Sync Separator with AFC LVA519
Measuring Procedures
(Except where noted otherwise, Ta=25C, V
CC
=5.0V, V
IN
=2.0V
P-P
)
Item
Symbol
Switch state
Measuring Procedures
S1
S2
S3
S4
S5
Consumption current
Id
B
B
A
A
A
Horizontal sync
(H)
V
HH
B
A
B
B
A
output
(L)
V
HL
B
A
B
B
A
Vertical sync
(H)
V
VH
B
A
B
B
A
output
(L)
V
VL
B
A
B
B
A
Free-running frequency
f
O
A
B
B
B
A
setting range
Power supply fluctuation of
f
O
1
A
B
B
B
A
free-running frequency
Free-running frequency
f
O
2
A
B
B
B
A
temperature coefficient
Capture range
f
C
B/A
A
B
B
A
Lock range
f
L
B/A
A
B
B
A
AFC output delay time
td
A/B
A
B
B
A
AFC output pulse width
Pw
A/B
A
B
B
A
Schmitt trigger
(H)
Vt
HH
B
A
B
B
A
threshold
(L)
Vt
HL
Connect a DC ammeter to V
CC
pin.
Input standard color bar 2V
P-P
.
Measure at TP5
Input standard color bar 2V
P-P
.
Measure at TP4.
Adjust VR1 and measure frequency at TP5.
With fo at 15.73kHz, vary Vcc between 4.0V~6.0V
and measure at TP5.
With fo at 15.73kHz, vary temperature between
-20C and 80C and measure at TP5.
Input standard color bar 2V
P-P
and measure at TP1 and TP5.
*
1
Input standard color bar 2V
P-P
and measure at TP1 and TP5.
*
1
Input standard color bar 2V
P-P
and measure at TP2 and TP5.
*
2
Input standard color bar 2V
P-P
and measure at TP5.
*
2
Measure at TP3 and TP4.
*
3
Notes:
*
1 Capture range (fc)
Vary VR1 between max min and min max with SW1, and for each
lock make SW1 A and measure at TP5.
Data : f
C
1 and f
C
2 smaller value
Lock range (fL)
With SW1 at B and locked, vary VR1 and when the lock is released,
make SW1 A and measure at TP5.
Data : f
L
1 and f
L
2 smaller value
fc1
fc2
15.73KHz
fL1
fL2
15.73KHz
Measuring Procedures
(Except where noted otherwise, Ta=25C, V
CC
=5.0V, V
IN
=2.0V
P-P
)
Item
Symbol
Switch state
Measuring Procedures
S1
S2
S3
S4
S5
Sync separation
V
SEPA
B
A
B
B
A
level
AFC switching
R
AFC
B
A
B
B
B
resistance
Raise horizontal sync signal level of input standard
color bar 2V
P-P
and measure the level when a signal
is output at TP5.
With Fo at 15.73kHz, vary Iafc, and determine
according to Iafc value when TP5 output signal
switches to a composite signal, and TP6 voltage V6.
R
AFC
=V6/I
A
1
MITSUMI
Sync Separator with AFC LVA519
*
2
*
AFC output delay time (td)
Set SW1 at A and adjust TP5 output to 15.73kHz. Then set SW1 to B
and measure td from TP2 and TP5 waveforms. (specified at 50% of
sync signal amplitude)
*
AFC output pulse width (Pw)
Set SW1 at A and adjust TP5 output to 15.73kHz. Then set SW1 to B
and measure Pw from TP5 waveform. (specified at 50% of sync
signal amplitude)
*
3
*
Schmidt trigger threshold
(Vth
H
) (Vth
L
)
Measure Vth
H
and Vth
L
at TP3 and TP4.
TP4
TP3
V
thH
V
thL
Measuring Circuit
SIP-9A
SOP-14A
TP2
TP5
50
50
100
Pw
td
MITSUMI
Sync Separator with AFC LVA519
Application Circuits
SIP-9A
SOP-14A
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