NJRC NJM2512A

NJM2512A
47µ
µF AC-Coupling Capacitor
Low Voltage Video Driver with LPF
■GENERAL DESCRIPTION
The NJM2512A is a Low Voltage Video Amplifier featuring small
AC-coupling Capacitor.
The NJRC original Technology “ASC(Advanced SAG Correction)”
realizes 47µF AC-Coupling Capacitor which enables to downsize
mounting space.
No worrying about beat noise caused by charge-pump circuit, and
over-current caused by circuit short out than Capacitor-less video
driver.
The NJM2512A is suitable for any video application.
NJM2512: Gain=6dB
NJM2512A : Gain=12dB
■FEATURES
● Operating Voltage
● AC-Coupling capacitor
● 6dB Amplifier
● 75Ω Driver
● Internal LPF
● Power-save Circuit
● Bipolar Technology
● Package Outline
■PACKAGE OUTLINE
NJM2512ARB1
3.0 to 5.5V
47µF
0dBtyp.at 4.5MHz
-33dBtyp.at 19MHz
TVSP8
■PIN CONNECTION
1
8
2
7
3
6
4
5
1: SSIGV
2: VSAG
3: SREFV
4: VIN
5: GND
6: Power Save
7: VOUT
+
8: V
■BLOCK DIAGRAM
GND
VCC
12dB
VIN
75ΩDRV
4.5MHz
LPF
0.1µF
VOUT
47µF 75Ω
75Ω
+
VSAG
CLAMP
SREFV
ASC
Ver.0
SSIGV
PS
-1-
NJM2512A
■ABSOLUTE MAXIMUM RATINGS (Ta=25°C)
PARAMETER
SYMBOL
RATINGS
UNIT
+
Supply Voltage
V
7.0
V
Power Dissipation
PD
580(Note1)
mW
Topr
Tstg
-40 to +85
-40 to +150
°C
°C
Operating Temperature Range
Storage Temperature Range
(Note1) At on a board of EIA/JEDEC specification. (114.3 x 76.2 x 1.6mm Two layers, FR-4)
■RECCOMENDED OPERATING CONDITIONS (Ta=25°C)
PARAMETER
Operating voltage
SYMBOL
TEST CONDITION
MIN.
TYP.
MAX.
UNIT
3.0
-
5.5
V
MIN.
TYP.
MAX.
UNIT
No signal
-
10
15
mA
Isave
Power save mode
-
20
50
µA
Vom
Vin=100kHz,sin-signal, THD=1%,
2.2
-
-
Vp-p
Vin=1MHz, 1.0Vp-p sin-signal
11.5
12.0
12.5
dB
Gf4.5M
Vin=4.5MHz/1MHz, 1.0Vpp sin-signal
-0.6
-0.1
+0.4
dB
Gf19 M
Vin=19MHz/1MHz, 1.0Vpp sin-signal
-
-33
-23
dB
Vopr
+
■ELECTRICAL CHRACTERISTCS( V =3.3V, RL=150Ω,Ta=25°C)
PARAMETER
Supply Current
Supply Current
at Power Save Mode
Maximum Output Level
Voltage Gain
Low Pass Filter Characteristic
SYMBOL
ICC
Gv
TEST CONDITION
Differential Gain
DG
Vin=1.0Vp-p 10step video signal
-
0.5
-
%
Differential Phase
DP
Vin=1.0Vp-p 10step video signal
-
0.5
-
deg
S/N Ratio
SN
100kHz to 6MHz, Vin=1.0Vp-p
100% White Video Signal, RL=75Ω
-
60
-
dB
1.8
-
V
+
V
SW Voltage High Level
VthH
Active
SW Voltage Low Level
VthL
Non-Active
0
-
0.3
V
SW Sink Current High Level
IthH
V=5V
-
-
300
µA
SW Sink Current Low Level
IthL
V=0.3V
-
-
5
µA
■ CONTROL TERMINAL
PARAMETER
Power Save
Ver.0
-2-
STATUS
MODE
H
Power save: OFF
Active mode
L
Power save: ON
Non-Active mode (Mute)
OPEN
Power save: OFF
Non-Active mode (Mute)
NJM2512A
■ TEST CIRCUIT
1
SSIGV
V+
8
0.1µF
0.1µF
68kΩ
2
VSAG
VOUT
7
+
47µF
V+
+
47µF
75Ω
75Ω
68kΩ
1µF
75Ω
3
SREFV
4
VIN
PS
6
GND
5
0.1µF
Ver.0
-3-
NJM2512A
■ APPLICATION CIRCUIT1
1
SSIGV
V+
8
0.1µF
0.1µF
68kΩ
2
VSAG
VOUT
7
+
47µF
V+
+
47µF
75Ω
68kΩ
1µF
75Ω
3
SREFV
4
VIN
PS
6
GND
5
VCC
8
0.1µF
■ APPLICATION CIRCUIT2(2-line drive)
1
SSIGV
0.1u
0.1u
36kΩ
2
VSAG
VOUT
7
+
47u
VCC
75Ω
+
47u
1u
75Ω
36kΩ
75Ω
3
SREFV
4
VIN
PS
6
GND
5
0.1u
■APPLICATION NOTE
NJM2512 Ahas possibilities that decrease in the capacitance in low-frequency band when the ceramic capacitor is
used(pin7). It is a possibility that the sag is generated when the ceramic capacitor decreases capacity.
Please verify it in consideration of the capacity drop of the ceramic capacitor.
[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.
Ver.0
-4-