NJRC NJM2505AF Single isolation amplifier Datasheet

NJM2505A
SINGLE ISOLATION AMPLIFIER
■ GENERAL DESCRIPTION
NJM2505A is the single isolation amplifier developed by the
video signal. It can remove the noise of a signal with isolation amplifier
and carries in the small package (MTP5), it is suitable for the interface
of the video signal of a car AV system.
■ PACKAGE OUTLINE
NJM2505AF
■ FEATURES
● Operating Voltage 4.5 to 9.0V
● Input: Sync-tip Clamp
● Common Mode Noise Rejection Ratio –55dBtyp.
● Voltage Gain 0dBtyp.
● Frequency Characteristics 0dBtyp.at 10MHz
● Bipolar Technology
● Package MTP5
■ PIN CONFIGURATION
1
1: Vout
5
2: GND
2
3: V+
3
4: Vin
4
5: VGND
■ BLOCK DIAGRAM
Vout
1
GND
2
V+
3
5
VGND
4
Vin
Ver.4
-1-
NJM2505A
■ ABSOLUTE MAXIMUM RATINGS(Ta=25°C)
PARAMETER
Supply Voltage
Power Dissipation
Operating Temperature Range
Storage Temperature Range
SYMBOL
+
V
PD
Topr
Tstg
RATINGS
15.0
200
-40 to +85
-40 to +125
UNIT
V
MW
°C
°C
■ RECOMMENDED OPERATING CONDITION(Ta=25°C)
PARAMETER
SYMBOL
Operating Voltage Range
TEST CONDITION
Vopr
MIN.
TYP.
MAX.
UNIT
4.5
-
9.0
V
MIN.
TYP.
MAX.
UNIT
2.0
-1.0
-1.0
3.0
2.2
0
0
6.0
1.0
1.0
mA
Vp-p
dB
dB
+
■ ELECTRICAL CHARACTERISTICS( V =5.0V, Ta=25°C)
PARAMETR
Supply Current
Maximum Output Voltage Level
Voltage Gain
Frequency Characteristics
Common Mode Noise
Rejection Ratio
Differential Gain
Differential Phase
Ver.4
-2-
SYMBOL
TEST CONDITION
ICC
Vom
Gv
Gf
No Signal
Vin=100kHz,Sin-Signal,THD=1%,
Vin=100kHz,1.0Vp-p,Sin-Signal
Vin=10MHz / 1MHz ,1.0VppSin-Signal
CMR
Vin=20KHz,Vin=1Vpp
-
-55
-
dB
Vin=1.0Vp-p,10step Video Signal
Vin=1.0Vp-p,10step Video Signal
-
0.3
0.4
-
%
deg
DG
DP
NJM2505A
■ TEST CIRCUIT
When CMR is measured, VGND is connected with VIN.
VIN
VGND
4.7uF
+
75Ω
+
4.7uF
50Ω
4
5
NJM2505A
1
3
2
0.1uF
+
22uF
+
10uF
2kΩ
■ APPLICATION CIRCUIT
VOUT
GND
VCC
VIN
VGND
75Ω
Input resistance
Input resistance
+
4.7uF
4.7uF
5
+
4
NJM2505A
1
2
3
0.1uF
+
+
10uF
2kΩ
Ver.4
VOUT
GND
VCC
-3-
NJM2505A
■ APPLICATION
1: Please connect input surge resistance to 4pin(Vin) and 5pin(VGND). Please refer to Fig. 1. If resistance is
enlarged, a waveform may deteriorate.
Surge Diode
Surge
Resistance
≒100Ω
4,5pin
Surge Diode
NJM2505A
Fig1: External connection
0.5
0.4
0.3
Gv(dB)
0.2
0.1
0
-0.1
-0.2
-0.3
-0.4
-0.5
0
20
40
60
80
100
120
140
160
180
160
180
Input Resistance(Ω)
Fig2: Input resistance vs. Voltage gain
-40
-45
-50
CMR(dB)
-55
-60
-65
-70
-75
-80
0
20
40
60
80
100
Input Resistance(Ω)
120
140
Fig3: Input resistance vs. Common mode rejection ratio
Ver.4
-4-
NJM2505A
2: Please connect a diode in a VGND at large common mode noise may be inputted into a Vin(4pin) and
VGND(5pin). Thereby, large common noise is restricted(refer to Fig.4).Current flows to a diode. Be careful of
current capacity.
VGND
NJM2505A
5pin
Fig4: External connection
Ver.4
-5-
NJM2505A
■ EQUIVALENT CIRCUIT
Pin.No
Symbol
1
Vout
Inside Equivalent Circuit
Voitage
0.92V
80Ω
2
GND
-
-
3
V+
-
-
240Ω
4
Vin
1.67V
31kΩ
5
Ver.4
-6-
VGND
1.67V
30kΩ
NJM2505A
Common mode rejection ratio vs. Frequency
(Vin=1.0Vp-p,Ta=25°C)
5
-10
0
-20
-5
-30
CMR[dB]
Gv[dB]
■ TYPICAL CHARACTERISTICS
Voltage gain vs. Frequency
(Vin=100kHz,1.0Vp-p,Ta=25°C)
-10
-40
-50
-15
-20 5
10
6
10
10
7
10
-60
8
10
Frequency [Hz]
1000
10
4
10
5
10
6
7
10
8
10
Frequency [Hz]
Supply current vs. Supply voltage
(Ta=25°C)
Maximum output voltage vs. Supply voltage
(Vin=100kHz,Ta=25°C)
3.5
4.0
3.0
Icc[mA]
Vom[V]
5.0
2.5
3.0
2.0
4.00
8.00
12.00
2.0
4.00
16.00
Voltage gain vs. Supply voltage
(Vin=100kHz,1.0Vpp,Ta=25°C)
12.00
16.00
Frequency characteristics vs. Supply voltage
(Vin=1.0Vpp,10MHz/1MHz,Ta=25°C)
1.0
0.5
0.5
Gf[dB]
1.0
0.0
0.0
-0.5
-0.5
-1.0
4.00
8.00
Vcc [V]
Vcc [V]
Gv1[dB]
100
8.00
Vcc [v]
12.00
16.00
-1.0
4.00
8.00
12.00
16.00
Vcc [V]
Ver.4
-7-
NJM2505A
■ TYPICAL CHARACTERISTICS
-30.0
1.0
-40.0
0.8
-50.0
0.6
DG[%]
CMR[dB]
Common mode noise ratio vs. Supply voltage
(Vin=20kHz,1.0Vpp,Ta=25°C)
-60.0
Differential gain vs. Supply voltage
(Vin=1.0Vpp,Ta=25°C)
0.4
0.2
-70.0
-80.0
4.00
8.00
12.00
0.0
4.00
16.00
8.00
12.00
16.00
Vcc [V]
Vcc [V]
Differential phase vs. Supply voltage
(Vin=1.0Vpp, Ta=25°C)
1.0
DP[%]
0.8
0.6
0.4
0.2
0.0
4.00
8.00
12.00
16.00
Vcc [V]
Supply current vs. Ambient temperature
(Vcc=5V)
Maximum output voltage vs. Ambient temperature
(Vcc=5V,Vin=100kHz)
3.5
5.0
4.5
3.0
Vom[V]
Icc[mA]
4.0
3.5
2.5
3.0
2.5
2.0
-50.00
0.00
50.00
o
Temp [ C]
Ver.4
-8-
100.00
150.00
2.0
-50.00
0.00
50.00
o
Temp [ C]
100.00
150.00
NJM2505A
■ TYPICAL CHARACTERISTICS
Frequency characteristics vs. Ambient temperature
(Vcc=5V,Vin=1.0Vpp 10MHz/1MHz)
1.0
1.0
0.5
0.5
Gf[dB]
Gv1[dB]
Voltage gain vs. Ambient temperature
(Vcc=5V,Vin=100kHz,1.0Vpp)
0.0
0.0
-0.5
-0.5
-1.0
-50.00
0.00
50.00
100.00
-1.0
-50.00
150.00
50.00
100.00
150.00
Temp [ C]
Temp [ C]
Common mode noise ratio vs. Ambient temperature
(Vcc=5V,Vin=20kHz,1.0Vpp)
Differential gain vs. Ambient temperature
(Vcc=5V,Vin=1.0Vpp)
-30.0
1.0
-40.0
0.8
-50.0
0.6
DG[%]
CMR[dB]
0.00
o
o
-60.0
0.4
0.2
-70.0
-80.0
-50.00
0.00
50.00
100.00
150.00
0.0
-50.00
0.00
50.00
100.00
150.00
Temp [oC]
o
Temp [ C]
Differential phase vs. Ambient temperature
(Vcc=5V,Vin=1.0Vpp)
1.0
DP[%]
0.8
0.6
0.4
0.2
0.0
-50.00
0.00
50.00
Temp [o C]
100.00
150.00
[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.4
-9-
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