NJM2574
LOW VOLTAGE VIDEO AMPLIFIER WITH LPF
IGENRERAL
DESCRIPTION
The NJM2574
is a Low Voltage Video Amplifier contained LPF circuit,
75Ω driver and internal CLAMP/BIAS SW, LPF/through SW to connect
TV monitor directly.
The input composite signal.(0.5Vpp) The mute circuit with power save
function is suitable for low power design.
The NJM2574
is suitable for
down sizing of Digital Steel Camera, and DVC for small package.
IPACKAGE
OUTLINE
NJM2574RB1
IFEATURES
GOperating
Voltage
2.8 to 5.5V
GInput
Composite Signal
0.5Vpp
GOutput
Swing
2.4Vpp typ. at Vcc=3V,CLAMP MODE
GInternal
CLAMP/BIAS SW
GInternal
LPF/through SW
GOperating
Current
9.0mA typ. at Vcc=3.0V
GOperating
Current in Battery Saving
70uAtyp. at Vcc=3.0V
G75Ω
2 system Drive
GBipolar
Technology
GPackage
Outline
TVSP8
IBLOCK
DIAGRAM
LPF/Through
SW
1
V
+
5
Vin 6
CLAMP/BIAS 8
SW
CLAMP
BIAS
12dB
75
Ω
Driver
LPF
4 Vout
3 Vsag
2
GND
7
Power Save
Ver.5
-1-
NJM2574
IABSOLUTE
MAXIMUM RATINGS
PARAMETER
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
IELECTRICAL
CHARACTERISTICS
( V
+
=3.0V,RL=150Ω,Ta=25°C)
PARAMETER
Operating Voltage
Operating Current
Operating Current at Power Save
Maximum Output Voltage Swing
Voltage Gain
Frequency Characteristic
(Through MODE)
Low Pass Filter Characteristic
SYMBOL
Vopr
I
CC
Isave
Vomv
Vom
RGB
Gv
Gf
No Signal
Power Save Mode
f=1kHz,THD=1%,CLAMP MODE
LPF MODE
f=1kHz,THD=1%,
BIAS MODE, through MODE
Vin=100kHz,0.5Vp-p,
Input Sine Signal
Vin=20MHz/100kHz,0.5Vp-p
TEST CONDITION
MIN.
2.8
-
-
2.2
1.4
12.0
-6.0
-0.95
-
TYP.
3.0
9.0
70
2.7
2.0
12.4
-3.0
-0.45
-3.0
-23
0.5
0.5
+60
-60
-
-
MAX.
5.5
10.0
90
-
Vp-p
-
12.8
-
0.05
-
-17
-
-
-
-
V
+
0.3
%
deg
dB
dB
V
dB
dB
dB
UNIT
V
mA
uA
Gfy4.5M Vin=4.5MHz/100kHz,0.5Vp-p
Gfy8M
Vin=8MHz/100kHz,0.5Vp-p
Differential Gain
Differential Phase
S/N
2nd. Distortion
SW Change Voltage High Level
SW Change Voltage Low Level
Gfy23.5M Vin=23.5MHz/100kHz,0.5Vp-p
-
Vin=0.5Vp-p,
DG
-
Input 10step Video Signal
Vin=0.5Vp-p,
DP
-
Input 10step Video Signal
Vin=0.5Vp-p,
SNv
-
100% White Video Signal, R
L
=75Ω
Vin=0.5Vp-p,3.58MHz,Sine Video
-
Hv
Signal,R
L
=75Ω,
Band Width 100kHz to 6MHz
VthH
1.8
VthL
0
I
CONTROL TERMINAL
PARAMETER
Power Save(7pin)
STATUS
H
L
OPEN
H
L
OPEN
Power Save : OFF
Power Save : ON
Power Save : ON
LPF MODE
Through MODE
Through MODE
NOTE
LPF/Through SW(1pin)
Ver.5
-2-
NJM2574
ITEST
CIRCUIT
Vin
Power save
0.1uF
75Ω
+
CLAMP/BIAS
SW
8
7
6
V
+
5
10uF
0.1uF
NJM2574
1
2
GND
LPF/Through
SW
3
+
22uF
Vsag
4
+
100uF
75Ω
Vout
75Ω
I
APPLICATION CIRCUIT
Vin
Power save
0.1uF
75Ω
+
CLAMP/BIAS
SW
8
7
6
V
+
5
10uF
0.1uF
NJM2574
1
2
GND
LPF/Through
SW
3
+
33uF
Vsag
4
+
33uF
75Ω
Vout
75Ω
Ver.5
-3-
NJM2574
I
TYPICAL CHARACTERISTICS
Voltage Gain vs. Freqency
20
10
Voltage Gain Gv(dB)
0
-10
-20
-30
-40
3
100 10
Clamp+LPF
Bias+Through
1 10
6
10 10
6
Frequency(Hz)
Voltage Gain vs. Freqency
(Clamp+LPF Input)
20
10
Voltage Gain Gv(dB)
Voltage Gain Gv(dB)
0
-10
-20
-30
-40
100 10
3
Voltage Gain vs. Freqency
(Bias+Through Input)
20
10
0
-10
-20
-30
-40
100 10
3
1 10
6
Frequency(Hz)
10 10
6
1 10
6
Frequency(Hz)
10 10
6
Operating Current vs. Supply Voltage
12.0
Operationg Current Icc(mA)
Operating Current at Standby State Isave(uA)
Operating Current at Standby State
vs. Supply Voltage
120.0
100.0
80.0
60.0
40.0
20.0
0.0
2.0
10.0
8.0
6.0
4.0
2.0
2.0
3.0
4.0
5.0
6.0
7.0
8.0
3.0
4.0
5.0
6.0
7.0
8.0
Supply Voltage V
+
(V)
Supply Voltage V
+
(V)
Ver.5
-4-
NJM2574
I
TYPICAL CHARACTERISTICS
Maximum Output Voltage Swing vs. Supply Voltage
(Clamp+LPF Type Input)
Maximum Output Voltage Swing Vomv(Vpp)
6.0
5.0
4.0
3.0
2.0
1.0
0.0
2.0
Total Harmonic Distortion=1%, 1kHz
Vin
Vomv
Maximum Output Voltage Swing vs. Supply Voltage
(Bias+Through Type Input)
Maximum Output Voltage Swing VomRGB(Vpp)
6.0
5.0
4.0
3.0
2.0
1.0
0.0
2.0
Total Harmonic Distortion=1%, 1kHz
Vin
VomRGB
3.0
4.0
5.0
6.0
7.0
8.0
3.0
4.0
5.0
6.0
7.0
8.0
Supply Voltage V
+
(V)
Supply Voltage V
+
(V)
Voltage Gain vs. Supply Voltage
0.5Vpp, 100kHz sinewave signal input
14.0
13.5
Voltage Gain Gv(dB)
13.0
12.5
12.0
11.5
11.0
2.0
Gain Frequency Characteristics vs. Supply Voltage
(Bias+Through Type Input)
0.5Vpp, 20MHz/100kHz
Gain Frequency Characteristics Gf(dB)
0.0
-2.0
-4.0
-6.0
-8.0
-10.0
2.0
3.0
4.0
5.0
6.0
7.0
8.0
Supply Voltage V
+
(V)
3.0
4.0
5.0
6.0
7.0
8.0
Supply Voltage V
+
(V)
Low Pass Filter Characteristic 1 vs. Supply Voltage
(Clamp+LPF Type Input)
1.0
LPF Characteristic 1 Gfy4.5M(dB)
0.5
0.0
-0.5
-1.0
-1.5
-2.0
2.0
0.5Vpp, 4.5MHz/100kHz
Low Pass Filter Characteristic 2 vs. Supply Voltage
(Clamp+LPF Type Input)
0.5Vpp, 8MHz/100kHz
LPF Characteristic 2 Gfy8M(dB)
0.0
-2.0
-4.0
-6.0
-8.0
-10.0
2.0
3.0
4.0
5.0
6.0
+
7.0
8.0
3.0
4.0
5.0
6.0
+
7.0
8.0
Supply Voltage V (V)
Supply Voltage V (V)
Ver.5
-5-
嵌入式系统
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