NJM2561A
LOW VOLTAGE VIDEO AMPLIFIER WITH LPF
sGENERAL
DESCRIPTION
The
NJM2561A
is a low voltage single video amplifier with
low pass filter.
The
NJM2561A
features low power and small package. It is
suitable for any video application.
sFEATURES
q
Operating Voltage
th
q
6 Order LPF
q
6dB Amplifier
q
75Ω Driver Circuit
q
Power Save Circuit
q
Bipolar Technology
q
Package Outline
sPACKAGE
OUTLINE
NJM2561AKG1
2.6 to 5.5V
-33dB at 19MHz typ.
ESON6 (1.6 x 1.6 x 0.4 mm )
sPIN
CONFIGURATION
1. Vsag
1
2
3
6
5
4
2. GND
3. Power Save
4. V+
5. Vout
6. Vin
sBLOCK
DIAGRAM
V
+
6dB
75
Ω
Driver
Vin
CLAMP
LPF
Vout
Vsag
GND
Power Save
Ver.0.1
-1-
NJM2561A
sABSOLUTE
MAXIMUM RATINGS
(Ta=25°C)
PARAMETER
SYMBOL
+
RATINGS
UNIT
Supply Voltage
V
7.0
V
Note1
Power Dissipation
P
D
TBD
mW
Operating Temperature Range
Topr
-40 to +85
°C
Storage Temperature Range
Tstg
-40 to +125
°C
(Note1) At on a board of EIA/JEDEC specification. (101.5 x 114.5 x 1.6mm 2 layers, FR-4)
s
RECOMMENDED OPEARATING CONDITION
(Ta=25°C)
PARAMETER
Operating Voltage
SYMBOL
Vopr
+
TEST CONDITION
MIN.
2.6
TYP.
3.0
MAX.
5.5
UNIT
V
sELECTRICAL
CHARACTERISTICS
(V =3.0V,R
L
=150Ω,Ta=25°C)
PARAMETER
Operating Current
Operating Current at Power Save
Maximum Output Voltage Swing
Voltage Gain
Low Pass Filter Characteristic
Differential Gain
Differential Phase
S/N Ratio
2nd. Distortion
SW Change Voltage High Level
SW Change Voltage Low Level
sCONTROL
TERMINAL
PARAMETER
Power Save
STATUS
H
L
OPEN
Power Save: OFF(Active)
Power Save: ON (Mute)
Power Save: ON (Mute)
NOTE
SYMBOL
I
CC
Isave
Vom
Gv
Gfy4.5M
Gfy19M
DG
DP
SNv
Hv
VthPH
VthPL
TEST CONDITION
No Signal
No Signal, Power Save Mode
f=100kHz, Sine Signal, THD=1%
Vin=100kHz, 1.0Vp-p, Sine Signal
Vin=4.5MHz/100kHz, 1.0Vp-p
Vin=19MHz/100kHz, 1.0Vp-p
Vin=1.0Vp-p, 10step Video Signal
Vin=1.0Vp-p, 10step Video Signal
Vin=1.0Vp-p, R
L
=75Ω
100% White Video Signal,
f= 100kHz to 6MHz
Vin=1.0Vp-p, 3.58MHz,
Sine Signal, R
L
=75Ω
Active
Non-active
MIN.
-
-
2.2
6.1
-0.6
-
-
-
-
-
1.8
0
TYP.
8.0
30
2.5
6.5
-0.1
-33
0.5
0.5
65
-50
-
-
MAX.
12.0
50
-
6.9
0.4
-23
-
-
-
-
V
+
UNIT
mA
µA
Vp-p
dB
dB
%
deg
dB
dB
V
0.3
-2-
NJM2561A
sTEST
CIRCUIT
output
75Ω
input
0.1µF
0.1µF
75Ω
33µF
10µF
75Ω
6
Vin
Vsag
1
33µF
5
Vout
GND
2
4
V
+
Power
Save
3
s
APPLICATION CIRCUIT
(1) Standard circuit
(2) SAG correction unused circuit
output
output
75Ω
input
0.1µF
C1
75Ω
470µF
input
0.1µF
0.1µF
75Ω
10µF
+
0.1µF
75Ω
10µF
6
Vin
Vsag
1
C2
5
Vout
GND
2
4
V
+
Power
Save
3
6
Vin
Vsag
1
5
Vout
GND
2
4
V
+
Power
Save
3
-3-
NJM2561A
s
INSTRUCTIONS AND DIRECTIONS FOR USE
(1) Standard circuit
The SAG correction circuit reduces output coupling capacitor values.
However, this circuit may cause to SAG deterioration, and lose synchronization by luminance fluctuation.
Checking the waveform containing a lot of low frequency components like a bounce waveform (Worst condition
waveform of SAG). Refer to Figure 1 and Figure 2.
(2) SAG correction unused circuit
To stabilize the synchronized signal, we recommend this circuit.
Connect the coupling capacitor after connecting the Vout pin and Vsag pin. The recommended value is 470µF or
more. Refer to Figure 3 and Figure 4.
Figure 1
C1: 100µF, C2: 22µF
Input Signal: 1Vp-p, White
→
Black Waveform
Orange: Vout Pin Waveform
Green: waveform after output capacitor
Figure 2
C1: 100µF, C2: 22µF
Input Signal: 1Vp-p, Black
→
White Waveform
Orange: Vout Pin Waveform
Green: waveform after output capacitor
Figure 3
Output
coupling capacitor:
470µF
Input Signal: 1Vp-p, White
→
Black Waveform
Orange: Vout Pin Waveform
Green: waveform after output capacitor
Figure 4
Output
coupling capacitor:
470µF
Input Signal: 1Vp-p, Black
→
White Waveform
Orange: Vout Pin Waveform
Green: waveform after output capacitor
-4-
NJM2561A
[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.
-5-
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