NJM2274
LOW POWER VIDEO AMPLIFIER WITH Y-C MIXER
s
GENERAL DESCRIPTION
The NJM2274
is a low power, 3V operation video amplifier with
Y/C mixer and 75 ohm driver , which connect TV monitor directly.
The NJM2274 has mute function , and suitable for energy save
products and any low power system , which are Digital Camera ,
DVC and other video amplifier system.
NJM2274R
s
PACKAGE OUTLINE
s
FEATURES
q
Low Operating Voltage
2.8 to 5.5V
q
Internal Y/C MIX Circuit
q
Y-input : Clamp
C-input : Bias
q
Operating Current
9.3mA typ. at V
+
=3.0V
q
Operating Current at Power Save 0.9mA typ. at V
+
=3.0V
q
Bipolar Technology
q
Package Outline
VSP8
s
BLOCK DIAGLAM
Power Save
6
Vref.
Vcc
5
Yin
1
Disc.
Clamp
3
750Ω
4
Vsag
Vout
Cin
8
Bias
7
C mute
2
GND
-1-
NJM2274
s
ABOSOLUTE MAXIMUM RATINGS
PARAMRTER
Supply Voltage
Power Dissipation
Operating Temperature Range
Storage Temperature Range
SYMBOL
V
+
P
D
Topr
Tstg
RATINGS
7.0
320
-40 to +85
-40 to +125
(Ta=25°C)
UNIT
V
mW
°C
°C
s
ELECTRICAL CHARACTERISTICS ( V
+
=3.0V,Ta=25°C)
PARAMETER
Operating Voltage
Operating Current
Operating Current
(Power Save Mode)
Maximum Output Voltage
Voltage Gain
Frequency Characteristic
Differential Gain
Differential Phase
Chroma Mute Cross talk
S/N
SYMBOL
Vopr
Iccq
Iccs
Vom
Gv
Gf
DG
DP
CT
SNv
No Signal
Power Save Mode
f=1kHz,THD=1%
Yin=100kHz , 0.5Vpp,
Sine Video Signal (note)
Yin=10MHz/100kHz,0.5Vpp,
Sine Video Signal (note)
Yin=0.5Vpp,10Step Video Signal
Yin=0.5Vpp,10Step Video Signal
Cin=4.43MHz,0.1Vpp
Yin=0.5Vpp, 100%White Video
Signal , Cin=AC gnd Wide Band
100kHz to 6MHz,R
L
=75ohm
Yin=0.5Vpp,3.58MHz Red Field
Video Signal, Cin=AC gnd
R
L
=75ohm
Chroma Input
TEST CONDITION
MIN.
2.8
-
-
2.2
11.9
-1.0
-
-
-
-
TYP.
3.0
9.3
0.9
-
12.4
0
2.5
1.0
-65
-60
MAX.
5.5
12.0
1.2
-
12.9
+1.0
-
-
-
-
UNIT
V
mA
mA
Vpp
dB
dB
%
deg
dB
dB
Second Distortion
Input Resistance
Mute Switch Change Voltage
Power Save Switch
Change Voltage
(note) Sine Video Signal
Hv
Zinc
VthMH
VthML
VthPH
VthPL
-
16
1.4
0
1.4
0
-40
20
-
-
-
-
-
24
V
0.6
V
+
0.6
+
dB
kΩ
V
V
40uS<t<50uS
714mVpp
357mVpp
286mVpp
-2-
NJM2274
s
CONTROL TERMINAL EXPLANATION
PARAMETER
Chroma Mute
STATUS
H
L
OPEN
H
L
OPEN
Chroma Mute : ON
Chroma Mute : OFF
Chroma Mute : OFF
Power Save : OFF
Power Save : ON
Power Save : ON
NOTE
Power Save
s
TEST CIRCUIT
75Ω
50Ω
Cin
A
SW4
B
Cmute
CTL
P.S
CTL
V
+
10µF
100pF
A
SW3
0.1µF
8
7
6
5
B
1000pF
100pF
NJM2274
1
0.1µF
SW1
A
B
75Ω
Vout1
SW2
A
B
Yin
75Ω
2
3
4
100µF
22µF
Vout2
75Ω
50Ω
-3-
NJM2274
MEMO
[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.
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