NJM2255
CHROMA SIGNAL HUE TINT CONTROLLER
■
GENERAL DESCRIPTION
NJM2255
is a Chroma signal Hue, Tint controller IC, to be used for VCR,
LCD & AV equipments.
In play back operation of video signals of VCRs, Hue and Tint of Chroma
signal can be adjusted independently and continuousely by the external
DC voltage.
NJM2255
internalizes the variable capacitor in it, so that it can
be operated with minimal external components.
■
PACKAGE OUTLINE
NJM2255D
■
FEATURES
●
Operating Voltage
(+4.7V to +5.3V)
NJM2255M
●
Internalizing variable capacitor
●
Internalizing changeable Gain Amplifier
●
Hue and Tint of Chroma signals can be adjusted continuousely by DC voltage (0V to 5V)
●
Internalizeng Dead Band Circuit
●
Package Outline DIP8, DMP8
●
Bipolar Technology
■
APPLICATIONS
●
VCR, LCD, AV equipments
■
BLOCK DIAGRAM
■
CONTOROL INPUT - OUTPUT SIGNAL
SW1
H
L
Output Signal
Color Main
Color Burst
Ver.2004-02-17
-1-
NJM2255
■
TEST CIRCUIT
-2-
Ver.2004-02-17
NJM2255
■
ABSOLUTE MAXIMUM RATINGS
PARAMETER
Supply Voltage
Power Dissipation
Operating Temperature Range
Storage Temperature Range
SYMBOL
V
+
(T
a
= 25°C)
RATINGS
7
500
-20 to +75
-40 to +125
UNIT
V
mW
°C
°C
P
D
T
opr
T
stg
■
ELECTRICAL CHARACTERISTICS
PARAMETER
Operating Current
Voltage Gain 1
Voltage Gain 2
Hue Offset
Hue Changeable width 1
Hue Changeable width 2
Tint Changeable width 1
Tint Changeable width 2
Tint Changeable width 3
Hue Offset Adjustment width 1
Hue Offset Adjustment width 2
BGP Threashold Voltage 1
BGP Threashold Voltage 2
Secondary Distortion 1
Secondary Distortion 2
SYMBOL
I
CC
GC
GB
T1
T2
T3
GC
GB
T1
OSTH
OSTL
VTHH
VTHL
HC
HB
SWITCH
S1 S2 S3 S4
2
2
2
2
2
2
2
2
2
3
1
2
2
2
2
2
2
2
2
3
1
2
2
2
2
2
2
2
2
2
3
3
3
1
2
3
1
2
2
2
2
2
2
2
3
1
2
2
2
2
2
2
No signal
V
OUT
/ V
IN
V
OUT
/ V
IN
S3 = 1 / 3 V
OUT
Phase difference
S3 = 1 / 3 V
OUT
Phase difference
S3 = 1 / 3 V
OUT
Phase difference
Gain (S3 = 3) - Gain (S3 = 1)
Gain (S3 = 3) - Gain (S3 = 1)
Gain (S3 = 3) - Gain (S3 = 1)
S3 = 1 / 3 V
OUT
S3 = 1 / 3 V
OUT
Switch on level
Switch off level
3.58MHz, 700mV
P-P
Sine Wave
3.58MHz, 700mV
P-P
Sine Wave
TEST CONDITION
MIN.
-
-1.0
-1.0
-3.5
20
-
-0.6
4.5
-
-
3.5
2.2
0
-
-
(V
+
= 5V, T
a
= 25°C)
TYP.
22.0
0
0
0
22
-22
0
5.5
-
-
-
-
-
-37
-37
MAX. UNIT
28.0
1.0
1.0
3.5
-
-20
0.6
-
-20
-3.5
-
5.0
0.8
-33
-33
mA
dB
dB
deg
deg
deg
dB
dB
dB
deg
deg
V
V
dB
dB
Note Unless otherwise specified, input signal is 3.58MHz and 300mV
P-P
sine wave.
Ver.2004-02-17
-3-
NJM2255
■
TYPICAL CHARACTERISTICS
Hue Control Voltage vs. Tint Changeable feature
Hue Control Voltage vs. Input Delay feature
Color Control Voltage
vs. Chroma Gain Changeable
[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
Mouser Electronics
Authorized Distributor
Click to View Pricing, Inventory, Delivery & Lifecycle Information:
NJR
:
NJM2255M-TE2 NJM2255D NJM2255M
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