Ver.13
- 1 -
NJM2574
LOW VOLTAGE VIDEO AMPLIFIER WITH LPF GENRERAL DESCRIPTION PACKAGE OUTLINE
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 signal is 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.
FEATURES Operating Voltage 2.8 to 5.5V Input Composite Signal 0.5Vpp 12dB Amplifier 75Ω Driver Internal CLAMP/BIAS SW Internal LPF/through SW Operating Current 9.0mA typ. at Vcc=3.0V Operating Current in Battery Saving 70µA typ. at Vcc=3.0V Bipolar Technology Package Outline MSOP8 (TVSP8)*
*MEET JEDEC MO-187-DA / THIN TYPE BLOCK DIAGRAM
CLAMP/BIAS
LPF
BIASCLAMP
Vin
SW
V+
12dB 75ΩDriver
Power SaveGND
LPF/ThroughSW
Vout
Vsag
4
3
72
8
6
1 5
NJM2574RB1 ( MSOP8 (TVSP8) )
- 2 -
NJM2574 ABSOLUTE MAXIMUM RATINGS (Ta=25°C)
PARAMETER SYMBOL RATINGS UNIT Supply Voltage V+ 7.0 V Power Dissipation PD 320 mW Operating Temperature Range Topr -40 to +85 °C Storage Temperature Range Tstg -40 to +125 °C
ELECTRICAL CHARACTERISTICS (V+=3.0V,RL=150Ω,Ta=25°C)
PARAMETER SYMBOL TEST CONDITION MIN. TYP. MAX. UNIT
Operating Voltage Vopr 2.8 3.0 5.5 V Operating Current ICC No Signal - 9.0 10.0 mA Operating Current at Power Save Isave Power Save Mode - 70 90 µA
Vomv f=1kHz,THD=1%,CLAMP MODE LPF MODE 2.2 2.7 -
Maximum Output Voltage Swing Vom RGB
f=1kHz,THD=1%, BIAS MODE, through MODE 1.4 2.0 -
Vp-p
Voltage Gain Gv Vin=100kHz,0.5Vp-p, Input Sine Signal 12.0 12.4 12.8 dB
Frequency Characteristic (Through MODE) Gf Vin=20MHz/100kHz,0.5Vp-p -6.0 -3.0 - dB
Gfy4.5M Vin=4.5MHz/100kHz,0.5Vp-p -0.95 -0.45 0.05
Gfy8M Vin=8MHz/100kHz,0.5Vp-p - -3.0 - Low Pass Filter Characteristic
Gfy23.5M Vin=23.5MHz/100kHz,0.5Vp-p - -23 -17
dB
Differential Gain DG Vin=0.5Vp-p, Input 10step Video Signal - 0.5 - %
Differential Phase DP Vin=0.5Vp-p, Input 10step Video Signal - 0.5 - deg
S/N SNv Vin=0.5Vp-p, 100% White Video Signal, RL=75ΩBand Width 100kHz to 6MHz
- 60 - dB
2nd. Distortion Hv Vin=0.5Vp-p, 3.58MHz, Sine Video Signal, RL=75Ω, - -60 - dB
SW Change Voltage High Level VthH 1.8 - V+ SW Change Voltage Low Level VthL 0 - 0.3
V
CONTROL TERMINAL
PARAMETER STATUS NOTE
H Power Save : OFF L Power Save : ON (Mute) Power Save(7pin)
OPEN Power Save : ON (Mute) H LPF MODE L Through MODE LPF/Through SW(1pin)
OPEN Through MODE H CLAMP MODE L BIAS MODE CLAMP/BIAS SW(8pin)
OPEN BIAS MODE
- 3 -
NJM2574 TEST CIRCUIT
75Ω
++22µF 100µF
75Ω
75Ω
0.1µF
1 2 3 4
8 7 6 5
NJM2574
GND
Vout
Vsag
V+
VinPower save
CLAMP/BIAS SW
LPF/Through SW
0.1µF
10µF+
- 4 -
NJM2574 APPLICATION CIRCUIT (1) Standard circuit (2) SAG correction unused circuit (3) Two-line driving circuit (1) Standard circuit
This circuit is for a portable equipment of small mounting space. The SAG correction reduces output coupling capacitor values. However, this circuit may cause to SAG deterioration, and lose synchronization by luminance fluctuation. Adjust the C1 value, checking the waveform containing a lot of low frequency components like a bounce waveform (Worst condition waveform of SAG). Change the capacitor of C1 into a large value to improve SAG.
(2) SAG correction unused circuit
We recommend this circuit when there is no space limitation. Connect the coupling capacitor after connecting the Vout pin and Vsag pin. The recommended value is 470µF or more.
(3) Two-line driving circuit
This circuit drives two-line of 150Ω. However, it may cause to lose synchronization by an input signal of large APL change (100% white signals more than 1Vp-p). Confirm the large APL change waveform (100% white signals more than 1Vp-p) and evaluate sufficiently.
75Ω
++33µF 33µF
0.1µF
75Ω
10µF+
0.1µF
1 2 3 4
8 7 6 5
NJM2574
Vout
V+
Vin
C1
Power save
CLAMP/BIAS SW
LPF/Through SW
GND
75Ω
+470µF
0.1µF
75Ω
10µF+
0.1µF
1 2 3 4
8 7 6 5
NJM2574
Vout
V+
Vin
Power save
CLAMP/BIAS SW
LPF/Through SW
GND
75Ω
+470µF
0.1µF
75Ω
10µF+
0.1µF
1 2 3 4
8 7 6 5
NJM2574
GND
Vout1
V+
Vin
Power save
CLAMP/BIAS SW
75Ω
Vout2
LPF/Through SW
- 5 -
NJM2574 APPLICATION (IC characteristic is not guaranteed)
When you use a power save terminal more than by 4.0V, please put resistance of about 20kΩ into a power save terminal.
Resistance is unnecessary in the following condition.
1. The power save terminal voltage (VthH) is less than 4.0V. 2. When you select "BIAS" at the power-supply voltage of 5V.
Example) PS(VthH) ≥ 4.0V PS(VthH) < 4.0V
Power Save
VPS(VthH)
VthH < 4.0V
Power Save
r
VPS(VthH)r ≅ 20kΩVthH ≥ 4.0V
- 6 -
NJM2574 TERMINAL DESCRIPTION
No SYMBOL EQUIVALENT CIRCUIT
1 LPF/Through SW
2 GND
3 Vsag
4 Vout
5 V+
48KΩ
32KΩ
V+
750Ω 25.3KΩ
V+
V+
750Ω 25.3KΩ
V+
- 7 -
NJM2574 TERMINAL DESCRIPTION
No SYMBOL EQUIVALENT CIRCUIT
6 Vin
7 PowerSave
8 CLAMP/BIAS SW
48KΩ
32KΩ
V+
270Ω 270Ω
V+
270Ω20KΩ
V+
32k
48k
GND
16k
16k
- 8 -
NJM2574 TYPICAL CHARACTERISTICS
-40
-30
-20
-10
0
10
20
100 103 1 106 10 106
Voltage Gain vs. Freqency
Clamp+LPFBias+Through
Vol
tage
Gai
n G
v(dB
)
Frequency(Hz)
-40
-30
-20
-10
0
10
20
100 103 1 106 10 106
Voltage Gain vs. Freqency(Clamp+LPF Input)
Vol
tage
Gai
n G
v(dB
)
Frequency(Hz)
-40
-30
-20
-10
0
10
20
100 103 1 106 10 106
Voltage Gain vs. Freqency(Bias+Through Input)
Vol
tage
Gai
n G
v(dB
)
Frequency(Hz)
2.0
4.0
6.0
8.0
10.0
12.0
2.0 3.0 4.0 5.0 6.0 7.0 8.0
Operating Current vs. Supply Voltage
Ope
ratio
ng C
urre
nt I
cc(m
A)
Supply Voltage V+(V)
0.0
20.0
40.0
60.0
80.0
100.0
120.0
2.0 3.0 4.0 5.0 6.0 7.0 8.0
Operating Current at Standby State vs. Supply Voltage
Ope
ratin
g C
urre
nt a
t Sta
ndby
Sta
te I
save
(uA
)
Supply Voltage V+(V)
Condition: CLAMP+LPF INPUT
- 9 -
NJM2574 TYPICAL CHARACTERISTICS
0.0
1.0
2.0
3.0
4.0
5.0
6.0
2.0 3.0 4.0 5.0 6.0 7.0 8.0
Maximum Output Voltage Swing vs. Supply Voltage(Clamp+LPF Type Input)
VinVomv
Max
imum
Out
put V
olta
ge S
win
g V
omv(
Vpp)
Supply Voltage V+(V)
Total Harmonic Distortion=1%, 1kHz
0.0
1.0
2.0
3.0
4.0
5.0
6.0
2.0 3.0 4.0 5.0 6.0 7.0 8.0
Maximum Output Voltage Swing vs. Supply Voltage(Bias+Through Type Input)
VinVomRGB
Max
imum
Out
put V
olta
ge S
win
g V
omR
GB
(Vpp
)
Supply Voltage V+(V)
Total Harmonic Distortion=1%, 1kHz
11.0
11.5
12.0
12.5
13.0
13.5
14.0
2.0 3.0 4.0 5.0 6.0 7.0 8.0
Voltage Gain vs. Supply Voltage
Vol
tage
Gai
n G
v(dB
)
Supply Voltage V+(V)
0.5Vpp, 100kHz sinewave signal input
-10.0
-8.0
-6.0
-4.0
-2.0
0.0
2.0 3.0 4.0 5.0 6.0 7.0 8.0
Gain Frequency Characteristics vs. Supply Voltage(Bias+Through Type Input)
Gai
n Fr
eque
ncy
Cha
ract
eris
tics
Gf(d
B)
Supply Voltage V+(V)
0.5Vpp, 20MHz/100kHz
-2.0
-1.5
-1.0
-0.5
0.0
0.5
1.0
2.0 3.0 4.0 5.0 6.0 7.0 8.0
Low Pass Filter Characteristic 1 vs. Supply Voltage(Clamp+LPF Type Input)
LPF
Cha
ract
eris
tic 1
Gfy
4.5M
(dB
)
Supply Voltage V+(V)
0.5Vpp, 4.5MHz/100kHz
-10.0
-8.0
-6.0
-4.0
-2.0
0.0
2.0 3.0 4.0 5.0 6.0 7.0 8.0
Low Pass Filter Characteristic 2 vs. Supply Voltage(Clamp+LPF Type Input)
LPF
Cha
ract
eris
tic 2
Gfy
8M(d
B)
Supply Voltage V+(V)
0.5Vpp, 8MHz/100kHz
- 10 -
NJM2574 TYPICAL CHARACTERISTICS
-32.0
-30.0
-28.0
-26.0
-24.0
-22.0
-20.0
-18.0
-16.0
2.0 3.0 4.0 5.0 6.0 7.0 8.0
Low Pass Filter Characteristic 3 vs. Supply Voltage(Clamp+LPF Type Input)
LPF
Cha
ract
eris
tic 3
Gfy
23.5
M(d
B)
Supply Voltage V+(V)
0.5Vpp, 23.5MHz/100kHz
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
2.0 3.0 4.0 5.0 6.0 7.0 8.0
Differential Gain vs. Supply Voltage
Diff
eren
tial G
ain
DG
(%)
Supply Voltage V+(V)
0.5Vpp, 10step video signal input
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
2.0 3.0 4.0 5.0 6.0 7.0 8.0
Differential Phase vs. Supply Voltage
Diff
eren
tial P
hase
DP
(deg
)
Supply Voltage V+(V)
0.5Vpp, 10step video signal input
40.0
50.0
60.0
70.0
80.0
90.0
100.0
2.0 3.0 4.0 5.0 6.0 7.0 8.0
Signal to Noise Ratio vs. Supply VoltageS
igna
l to
Noi
se R
atio
SN
v(dB
)
Supply Voltage V+(V)
0.5Vpp, 100% white video signal input, 100kHz-6MHz
-100.0
-90.0
-80.0
-70.0
-60.0
-50.0
-40.0
-30.0
-20.0
2.0 3.0 4.0 5.0 6.0 7.0 8.0
Second Harmonic Distortion vs. Supply Voltage
Sec
ond
Har
mon
ic D
isto
rtion
Hv(
dB)
Supply Voltage V+(V)
0.5Vpp, 3.58MHz sinewave signal input
0.0
0.5
1.0
1.5
2.0
2.0 3.0 4.0 5.0 6.0 7.0 8.0
Switching Voltage vs. Supply Voltage
VthHVthL
Sw
itchi
ng V
olta
ge V
th(V
)
Supply Voltage V+(V)
- 11 -
NJM2574 TYPICAL CHARACTERISTICS
5.0
6.0
7.0
8.0
9.0
10.0
11.0
-40 0 40 80 120
Operating Current vs. Temperature
Ope
ratio
ng C
urre
nt I
cc(m
A)
Ambient Temperature Ta(oC)
0.0
20.0
40.0
60.0
80.0
100.0
-40 0 40 80 120
Operating Current at Standby State vs. Temperature
Ope
ratin
g C
urre
nt a
t Sta
ndby
Sta
te I
save
(uA
)
Ambient Temperature Ta(oC)
0.0
1.0
2.0
3.0
4.0
5.0
6.0
-40 0 40 80 120
Maximum Output Voltage Swing vs. Temperature(Clamp+LPF Type Input)
Max
imum
Out
put V
olta
ge S
win
g V
omv(
Vpp
)
Ambient Temperature Ta(oC)
Total Harmonic Distortion=1%, 1kHz
0.0
1.0
2.0
3.0
4.0
5.0
6.0
-40 0 40 80 120
Maximum Output Voltage Swing vs. Temperature(Bias+Through Type Input)
Max
imum
Out
put V
olta
ge S
win
g V
omR
GB(
Vpp
)
Ambient Temperature Ta(oC)
Total Harmonic Distortion=1%, 1kHz
-10.0
-8.0
-6.0
-4.0
-2.0
0.0
-40 0 40 80 120
Gain Frequency Characteristics vs. Temperature (Bias+Through Type Input)
Gai
n Fr
eque
ncy
Cha
ract
eris
tics
Gf(d
B)
Ambient Temperature Ta(oC)
0.5Vpp, 20MHz/100kHz
0.0
0.5
1.0
1.5
2.0
2.0 3.0 4.0 5.0 6.0 7.0 8.0
PowerSave Switching Voltage vs. Supply Voltage
VthPHVthPL
Pow
erS
ave
Sw
itchi
ng V
olta
ge V
thP
(V)
Supply Voltage V+(V)
- 12 -
NJM2574 TYPICAL CHARACTERISTICS
-2.0
-1.5
-1.0
-0.5
0.0
0.5
1.0
-40 0 40 80 120
Low Pass Filter Characteristic 1 vs. Temperature (Clamp+LPF Type Input)
LPF
Cha
ract
eris
tic 1
Gfy
4.5M
(dB)
Ambient Temperature Ta(oC)
0.5Vpp, 4.5MHz/100kHz
-10.0
-8.0
-6.0
-4.0
-2.0
0.0
-40 0 40 80 120
Low Pass Filter Characteristic 2 vs. Temperature (Clamp+LPF Type Input)
LPF
Cha
ract
eris
tic 2
Gfy
8M(d
B)
Ambient Temperature Ta(oC)
0.5Vpp, 8MHz/100kHz
-32.0
-30.0
-28.0
-26.0
-24.0
-22.0
-20.0
-18.0
-16.0
-40 0 40 80 120
Low Pass Filter Characteristic 3 vs. Temperature (Clamp+LPF Type Input)
LPF
Cha
ract
eris
tic 3
Gfy
23.5
M(d
B)
Ambient Temperature Ta(oC)
0.5Vpp, 23.5MHz/100kHz
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
-40 0 40 80 120
Differential Gain vs. Temperature
Diff
eren
tial G
ain
DG
(%)
Ambient Temperature Ta(oC)
0.5Vpp, 10step video signal input
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
-40 0 40 80 120
Differential Phase vs. Temperature
Diff
eren
tial P
hase
DP(
deg)
Ambient Temperature Ta(oC)
0.5Vpp, 10step video signal input
40.0
50.0
60.0
70.0
80.0
90.0
100.0
-40 0 40 80 120
Signal to Noise Ratio vs. Temperature
Sig
nal t
o N
oise
Rat
io S
Nv(
dB)
Ambient Temperature Ta(oC)
0.5Vpp, 100% white video signal input, 100kHz-6MHz
- 13 -
NJM2574 TYPICAL CHARACTERISTICS
-100.0
-90.0
-80.0
-70.0
-60.0
-50.0
-40.0
-30.0
-20.0
-40 0 40 80 120
Second Harmonic Distortion vs. Temperature
Sec
ond
Har
mon
ic D
isto
rtion
Hv(
dB)
Ambient Temperature Ta(oC)
0.5Vpp, 3.58MHz sinewave signal input
0.0
0.5
1.0
1.5
2.0
-40 0 40 80 120
Switching Voltage vs. Temperature
VthHVthL
Sw
itchi
ng V
olta
ge V
th(V
)
Ambient Temperature Ta(oC)
0.0
0.5
1.0
1.5
2.0
-40 0 40 80 120
PowerSave Switching Voltage vs. Temperature
VthPHVthPL
Pow
erS
ave
Sw
itchi
ng V
olta
ge V
thP
(V)
Ambient Temperature Ta(oC)
[CAUTION] The specifications on this databook are only
given for information , without any guarantee as regards either mistakes or omissions. Theapplication circuits in this databook are described only to show representative usagesof the product and not intended for the guarantee or permission of any right includingthe industrial rights.