NJM2712
ULTRA HIGH SPEED SINGLE OPERATIONAL AMPLIFIER
s
GENERAL DESCRIPTION
The
NJM2712
is an ultra high speed dual operational
amplifier.
It can swings 260V/µs high slew rate and 1GHz gain
band width product(10MHz typ. at 40dB) at
±2.5V.
It is suitable for pickup circuit of CD-R/RW or DVD-
R/RW, wideband video system, high resolution scanner
or FAX, high speed telecommunications, and any other
high speed signal processing system.
s
FEATURES
q
Operating Voltage
q
Operating Current
q
High Slew Rate
q
Gain Bandwidth Product
Bandwidth
q
Unity Gain Bandwidth
q
Input Offset Voltage
q
Maximum Output Voltage
q
Open Loop Voltage Gain
q
Bipolar Technology
q
Package Outline
s
PIN CONFIGURATION
NJM2712M
NJM2712RB1
(Top View)
PIN FUNCTION
s
PACKAGR OUTLINE
NJM2712M
NJU2712RB1
(±2.0 to
±4.5V)
(3.8mA typ. at V
+
/V
-
=±2.5V)
(260V/µs typ.)
(1GHz typ.)
(10MHz typ. at 40dB)
(180MHz typ.)
(7mV max.)
(±1.5V typ. at R
L
=1kΩ)
(75dB typ.)
DMP8,TVSP8
1
2
3
4
-
+
8
7
6
5
1.OUTPUT1
2.-INPUT1
3.+INPUT1
4.V
-
5.+INPUT2
6.-INPUT2
7.OUTPUT2
8.V
+
+ -
-1-
NJM2712
s
ABSOLUTE MAXIMUM RATINGS
PARAMETER
SYMBOL
Supply Voltage
V
+
Differential Input Voltage
V
ID
Power Dissipation
P
D
Operating Temperature Range Topr
Storage Temperature Range
Tstg
s
RECOMMENDED OPERATING CONDITION
PARAMETER
SYMBOL
Operating Voltage Range
V
+
/V
-
(Ta=25°C)
UNIT
V
V
mW
°C
°C
( Ta=25°C)
MAX
UNIT
4.5
V
RATINGS
10
±2
200
-40 to +85
-50 to +150
TEST CONDITION
MIN
2.0
TYP
2.5
s
DC CHARACTERISTICS
PARAMETER
Operating Current
Input Offset Voltage
Input Bias Current
Input Offset Current
Open Loop Voltage Gain
Input Common Mode
Voltage Range
Common Mode Rejection
Supply Voltage Rejection
Maximum Output Voltage
s
AC CHARACTERISTICS
PARAMETER
Bandwidth
Unity Gain Bandwidth
Phase Margin
Equivalent Input Noise
Voltage
SYMBOL
I
CC
V
IO
I
B
I
IO
Av
V
ICM
CMR
+SVR
-SVR
V
OM
TEST CONDITION
No Signal
( V
+
/V
-
=±2.5V, Ta=25°C)
MIN TYP MAX
UNIT
-
-
-
-
65
±1.3
3.8
2.0
2
350
75
±1.5
60
60
60
±1.5
6.8
7.0
7
900
-
-
-
-
-
-
mA
mV
µA
nA
dB
V
dB
dB
dB
V
R
L
=2kΩ
-1V≤V
CM
≤+1V
2.5V≤V
+
≤5V,
R
L
=2kΩ
-5V≤V
-
≤-2.5V,
R
L
=2kΩ
R
L
=1kΩ
50
50
50
±1.2
( V
+
/V
-
=±2.5V, Ta=25°C)
SYMBOL
BW
f
T
φ
M
V
NI
TEST CONDITION
Av=40dB,R
f
=1.98kΩ ,R
L
=∞
C
L
=10pF
Av=40dB,Rg=20Ω,R
f
=1.98kΩ
R
L
=∞,C
L
=10pF
Av=40dB,Rg=20Ω,R
f
=1.98kΩ
R
L
=∞,C
L
=10pF
MIN
-
-
-
-
TYP
10
180
38
6.8
MAX
-
-
-
-
UNIT
MHz
MHz
deg
nV/√Hz
s
TRANSIENT CHARACTERISTICS
PARAMETER
SYMBOL
Slew Rate
+SR
-SR
TEST CONDITION
Av=6dB,R
f
=1kΩ,Rg=1kΩ
R
L
=∞,CL=10pF
( V
+
/V
-
=±2.5V, Ta=25°C)
MIN TYP MAX
UNIT
-
-
260
260
-
-
V/µs
V/µs
-2-
NJM2712
s
Note:
non-inverting amplifier
1.The closed gain should be 6dB or higher to prevent the oscillation.
Unity gain follower application may cause the oscillation.
2.When the closed gain is lower than 20dB, use a compensation capacitor (CF: about 5pF),
parallel with the feedback resistor RF to avoid oscillation.
3.Recommended feedback resistor is less than 2k-ohom to keep the flatness of the frequency response.
4.Minimize the load capacitor for the better performance.
A large load capacitor CL reduces the frequency response and causes oscillation or ringing.
inverting amplifier
1.When the closed gain is lower than 20dB, use a compensation capacitor
(CF; recommended from 1pF to 5pF), parallel with the feedback resistor RF to avoid oscillation.
2.Minimize the feedback resistor to keep the frequency response and the slew rate.
(recommended about 1k-ohom)
The proper compensation capacitor CF can counteract oscillation even with a large feedback resistor RF.
3.Total load capacitance should be not more than 100pF.
The oscillation margin may be affected by the total load capacitance.
non-inverting amplifier
DUT
RF
CL
CF
RG
RL
inverting amplifier
CF
RF
RG
DUT
CL
RL
-3-
NJM2712
s
TYPICAL CHARACTERISTICS
Operating Current vs.Operating Voltage
Vin=0V,Ta=25℃
Operating Current vs. Ambient Temperature
6
5
Operating Current [mA]
6
5
Operating Current [mA]
Vin=0V
4
3
2
1
0
0
±0
1
±1
2
±2
3
±3
4
±4
±5
5
Operating Voltage [V]
4
V+/V-=±4.5V
3
2
1
0
-50
0
50
100
150
Ambient Temperature[°C]
V+/V-=±2.5V
V+/V-=±2.0V
Input Offset Voltage
vs. Ambient Temperature
0.5
Input Offset Voltage [mV]
V /V =±2.5V
+
-
Input Offset Current
vs. Ambient Temperature
V /V =±2.5V
+
-
800
600
Input Offset Current[nA]
0
-0.5
-1
-1.5
-2
-50
0
50
100
150
Ambient Temperature [°C]
400
200
0
-200
-400
-600
-800
-50
0
50
100
150
Ambient Temperature [°C]
Input Bias Current
vs. Ambient Temperature
Maximum Output Voltage Swing
vs. Operating Voltage
5
Maximum Output Voltage Swing [V]
Vin=±300½V,RL=1kΩ,Ta=25°C
0
-0.5
Input Offset Current [μA]
V /V =±2.5V
+
-
4
3
2
1
0
-1
-2
-3
-4
-5
±0
0
±1
1
±2
±3
±4
2
3
4
Operating Voltage [V]
±5
5
-1
-1.5
-2
-2.5
-3
-3.5
-50
0
50
100
150
Ambient Temperature [°C]
-4-
NJM2712
Maximum Output Voltage Swing
vs. Ambient Temperature
2
Maximum Output Voltage Swing [V]
1.5
Voltage Gain[dB]
V /V =±2.5V
+
-
Voltage Gain vs. Ambient Temperature
V /V =±2.5V,RL=2kΩ
+
-
90
80
70
60
50
40
30
20
10
0
-50
0
50
100
150
1
0.5
0
-0.5
-1
-1.5
-2
-50
0
50
100
150
Ambient Temperature [°C]
Common Mode Rejection Ratio
vs. Ambient Temperature
Ambient Temperature [°C]
V
+
Supply Voltage Rejection Ratio
vs. Ambient Temperature
80
V Supply Voltage Rejection Ratio [dB]
70
Common Mode Rejection Ratio[dB]
V /V =±2.5V,-1V<Vcm<+1V
+
-
V =-2.5V,+2.5V<V <+5V,RL=2kΩ
-
+
60
50
40
30
20
10
0
-50
0
50
100
150
Ambient Temperature [°C]
70
60
50
40
30
20
10
0
-50
0
50
100
150
Ambient Temperature [°C]
V
-
Supply Voltage Rejection Ratio
vs. Ambient Temperature
100
V Supply Voltage Rejection Ratio [dB]
V =+2.5V,-5V<V <-2.5V,RL=2kΩ
+
-
90
80
70
60
50
40
30
20
10
0
-50
0
50
100
150
Ambient Temperature [°C]
-
+
-5-
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