NJM2209
VIDEO PICTURE ENHANCER
■
GENERAL DESCRIPTION
The
NJM2209
is the video IC for quality improvement of the video
picture to get high quality by rectifying the picture contour.
■
FEATURES
●
Operating Voltage
(+4.5V to +5.5V)
●
By Differential From, Picture Enhance
●
at Minimal External Components
●
Internal Switch of Hirough/Picture Enhance
●
Package Outline
DMP14
●
Bipolar Technology
■
RECOMMENDED OPERATING CONDITION
●
Operating Voltage
4.5 to 5.5V
■
APPLICATION
●
Upgrading of picture quality on VCR, personal computer and other video picture.
■
PIN CONFIGURATION
■
PACKAGE OUTLINE
NJM2209M
NJM2209M
■
TEST CIRCUIT
Ver.2004-02-17
-1-
NJM2209
■
ABSOLUTE MAXIMUM RATINGS
PARAMETER
Supply Voltage
Power Dissipation
Operating Temperature Range
Storage Temperature Range
SYMBOL
V
+
(T
a
=25°C)
RATINGS
8
(DMP8)300
-20 to +75
-40 to +125
UNIT
V
mW
mW
°C
°C
P
D
T
opr
T
stg
■
ELECTRICAL CHARACTERISTICS
PARAMETER
Operating Current
Limitter Level (1)
Limitter Level (2)
H
Control
Amp Gain
M
L
Add
Amp Gain
3 pin input
10 pin input
SYMBOL
I
CC
LIM1
LIM2
G
H
G
M
G
L
G
7
G
3
C
SW
G
T
V
TH
DG
PC
DG
T
V
6PC
V
6T
10
3
8
8
8
3
10
12
10
12
10
10
8
1
7
7
7
1
1
1
1
1
1
1
1
1
SIGNAL
PIN
TEST
PIN
CONT.
VOLTAGE
2.8V
-
-
2.8V
1.3V
0.45V
(V
+
=5V, T
a
=25°C, Refer to Test Cricuit)
TEST CONDITION
No Input Signal
SYNC level>0.35V, Input Video Signal
f=100kHz, 1V
P-P
Sine Wave Input
MIN.
-
0.23
0.21
-2
f=100kHz, 0.1Vrms. Sine Wave Input
(dB)
G=20 log
10
V
OUT
/V
IN
-12
-
(dB)
(dB)
(dB)
(dB)
-1.6
-1
-
-1
0.2
-
-
-
-
TYP. MAX. UNIT
7.5
0.27
0.25
-0.9
-10
-
-0.6
0
-50
0
0.3
1
0
1.8
2.0
10
0.31
0.29
0
-8
-28
0.4
+1
-
1
0.4
3
3
-
-
mA
V
V
dB
dB
dB
dB
dB
dB
dB
V
%
%
V
V
Switch Cross Talk
Through Gain
Switch Control
Threshold Voltage
Differential Gain (Note 1)
Differential Gain (Note 2)
1 PIN Voltage (Note 1)
1 PIN Voltage (Note 2)
f=100kHz, 200mV
P-P
Sine Wave
G=20 log
10
V
OUT
/V
IN
1V
P
-
P
Video Signal Input
2.8V
G=20log
10
V
OUT
/V
IN
f=2MHz, 1V
P-P
Sine Wave
2.8→0V
C
SW
=20 log
10
V(0V)/V(2.8V)
1V
P-P
Video Signal Input
0V
G
T
=20 log
10
V
OUT
/V
IN
f=100kHz, 1V
P-P
Sine Wave Input
-40dB=20log
10
V
OUT
/V
IN
2.8V
2.8V
0V
2.8V
0V
DGDP Tester
Video Signal 1V
P-P
(Stair Step)
-2-
Ver.2004-02-17
NJM2209
■
TYPICAL APPLICATION
■
PRINCIPLES OF OPERATION, BI BLOCK DIAGRAM
The
NJM2209
is a video signal IC which converts an input video signal to a compensated video signal of the picture
outline by adding an input signal through a differential amplifier to the original input signal.
The compensating (enhanced) ratio is decided by pin 5 voltage and so the original signal comes when pin 5 voltage is
zero.
A peaking frequency compensation of the internal
differential amplifier is changed by C,R attached to pin 8 and L,R to pin 7.
The compensation signal and the original video signal are delayed the phase by low pass filter.These are done by a
capacitor attached to pin 12. The compensated ratio is originally settled by the coupling condenser between pin 7 and pin
3.
Example (Multi-Burst Enhancer)
MID
HARD
SOFT
Ver.2004-02-17
-3-
NJM2209
■
APPLICATION
This IC requires 1MΩ resistance between INPUT and GND pin for clamp type input since the minute current causes an
unstable pin voltage.
[CAUTION]
The specifications on this databook are only
given for information , without any guarantee
as regards either mistakes or omissions. The
application circuits in this databook are
described only to show representative usages
of the product and not intended for the
guarantee or permission of any right including
the industrial rights.
-4-
Ver.2004-02-17
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