NJRC NJM2723 High speed current feedback operational amplifier Datasheet

NJM2723
High Speed Current Feedback Operational Amplifier
■ General Description
The NJM2723 is a high speed, wide bandwidth and
high output current feedback operational amplifier.
Driving 150Ω load can expand the versatility of several
multimedia applications. Current feedback technology
has wide bandwidth and Low supply current.
With a 75MHz at G=+2, 24MHzat G=+10, high slew
rate of 2000V/µs, second harmonic distortion -65dB
and settling time of 50ns(0.1%) The NJM2723 makes it
ideal for high frequency amplifier, active filter and pulse
amplifier applications.
■ Features
High Speed
●Bandwidth
75MHz (−3dB, G=+2)
●Bandwidth
24MHz (−3dB, G=+10)
●Slew Rate
2000V/µs
For Video Applications (V+/V−=±5V)
●Bandwidth
52MHz (−3dB, G=+2)
●Bandwidth
8MHz (0.1dB, G=+2)
●Differential Gain
0.05%
●Differential Phase
0.25deg
●Settling Time
50ns (0.1%, G=+2)
Low Noise
●Voltage Noise
6nV/√Hz (@1kHz)
●Current Noise
13pA/√Hz (@1kHz)
●THD
−60dBc (@10MHz)
■ Package Outline
NJM2723E
NJM2723D
ORDER INFORMATION
Parts
NJM2723D
NJM2723E
Package
DIP8
EMP8
■ Pin Configuration
( Top View )
N.C.
1
8
N.C.
-INPUT
2
7
V+
+INPUT
3
6
OUTPUT
V-
4
5
N.C.
●Specified for ±5V and ±15V operation
●150Ω Drive Capability
●Output Voltage
±3.5V min. (RL=150Ω, V+/V−=±15V)
±2.4V min. (RL=150Ω, V+/V−=±5V)
●Supply Range
±3.5V~±17.5V
●Supply Current
5mA max.
■ Applications
●High frequency amplifier
●Active Filter
●150Ωcable driver
●Video amplifier
150ΩDrive High Slew Rate OP−AMP Lineup (Single)
SR=250V/µs SR=500V/µs SR=2000V/µs
Voltage Feedback
NJM2720
NJM2721
Current Feedback
NJM2723
Ver.2009-10-28
-1-
NJM2723
■ ABSOLUTE MAXIMUM RATINGS (Ta=25ºC, unless otherwise noted.)
PARAMETER
SYMBOL
RATING
UNIT
Supply Voltage
VDD
±18
V
Common Mode Input Voltage Range
Differential Input Voltage Range
VICM
VID
±18(Note1)
±3(Note1)
V
V
Power Dissipation (Note4)
PD
DIP8: 500
EMP8: 375 / 625 (Note2) / 875 (Note3)
mW
Operating Temperature Range
Topr
-40~+85
Storage Temperature Range
Tstg
-50~+150
(Note1) For supply voltage less than ±18V, the absolute maximum rating is equal to the supply voltage.
(Note2) On the PCB "EIA/JEDEC (114.3×76.2×1.6mm, 2 layers, FR-4)"
(Note3) On the PCB "EIA/JEDEC (114.3×76.2×1.6mm, 4 layers, FR-4)"
(Note4) See Figure “Power Dissipation Derating Curve" when ambient temperature is over 25ºC.
°C
°C
Power Dissipation Derating Curve
1000
EMP8(Note3)
Power Dissipation Pd (mW)
900
∆Pd
(mW/°C)
Package
DIP8
-4.0
EMP8
-3.0
-5.0
EMP8(Note2)
-7.0
EMP8(Note3)
800
700
EMP8(Note2)
600
DIP8
500
400
EMP8
300
200
100
0
5
15 25 35 45 55 65 75 85 95 105
Ambient Temperature Ta (ºC)
■RECOMMENDED OPERATING VOLTAGE (Ta=25ºC)
PARAMETER
Supply Voltage
-2-
SYMBOL
+
-
V /V
TEST CONDITION
MIN.
TYP.
MAX.
UNIT
±3.5
-
±17.5
V
Ver.2009-10-28
NJM2723
■ ELECTRICAL CARACTERISTICS (Measurement is to be conducted as pulse testing.)
● DC CHARACTERISTICS (V+/V-=±15V, Ta=25ºC, unless otherwise noted.)
PARAMETER
SYMBOL
TEST CONDITION
MIN.
TYP.
MAX.
UNIT
Supply Current
Input Offset Voltage
Icc
VIO
IB+
No Signal
2.9
4
2
2
2.5
±12
66
76
5
20
20
20
-
mA
mV
uA
uA
MΩ
V
dB
dB
Transimpedance
Common Mode Input Voltage Range
Common Mode Rejection Ratio
Supply Voltage Rejection Ratio
Maximum Output Voltage
IBZT
VICM
CMR
SVR
VOM
RL=1kΩ, Vo=±10V
CMR≥56dB
-11V≤VICM≤+11V
+ ±3.5V≤V /V ≤±17.5V
1.0
±11
56
66
RL=1kΩ
±11.5
±13
-
V
Maximum Output Voltage
VOM
RL=150Ω
±3.5
±4.5
-
V
Input Bias Current
● AC CHARACTERISTICS (V+/V-=±15V, Ta=25ºC, unless otherwise noted.)
PARAMETER
SYMBOL
TEST CONDITION
MIN.
TYP.
MAX.
UNIT
Bandwidth
BW-3dB
GV=6dB, RF=680Ω, RG=680Ω, RL=1kΩ, CL=1pF
GV=20dB, RF=680Ω, RG=75Ω, RL=1kΩ, CL=1pF
-
75
24
-
MHz
MHz
BW0.1dB GV=6dB, RF=680Ω, RG=680Ω, RL=1kΩ, CL=1pF
-
12
-
MHz
0.1dB Flatness
Slew Rate
SR
GV=6dB, RF=680Ω, RG=680Ω, RL=1kΩ, CL=1pF,
Vo=10Vpp, measured20% to 80%
-
1500
-
V/us
Slew Rate
SR
GV=6dB, RF=680Ω, RG=680Ω, RL=1kΩ, CL=1pF,
Vo=20Vpp, measured20% to 80%
-
2000
-
V/us
Settling Time 0.1%
ts
GV=-1, RF=620Ω, RG=620Ω, RL=1kΩ, CL=1pF,
Vo=10Vpp
-
50
-
ns
Equivalent Input Noise Voltage
Equivalent Input Noise Current
Vni
Ini+
f=100kHz
f=100kHz
-
6
13
-
nV/√Hz
pA/√Hz
Total Harmonic Distortion
THD
GV=6dB, RF=680Ω, RG=680Ω, RL=1kΩ,
Vo=2Vpp, f=10MHz
-
-60
-
dBc
2nd Harmonic Distortion
HD2nd
GV=6dB, RF=680Ω, RG=680Ω, RL=1kΩ,
Vo=2Vpp, f=10MHz
-
-65
-
dB
3rd Harmonic Distortion
HD3nd
GV=6dB, RF=680Ω, RG=680Ω, RL=1kΩ,
Vo=2Vpp, f=10MHz
-
-70
-
dB
Ver.2009-10-28
-3-
NJM2723
■ ELECTRICAL CARACTERISTICS (Measurement is to be conducted as pulse testing.)
● DC CHARACTERISTICS (V+/V-=±5V, Ta=25ºC, unless otherwise noted.)
PARAMETER
SYMBOL
TEST CONDITION
MIN.
TYP.
MAX.
UNIT
Supply Current
Input Offset Voltage
Icc
VIO
IB+
No Signal
2.8
4
2
2
0.85
±2.25
60
76
4.5
20
20
20
-
mA
mV
uA
uA
MΩ
V
dB
dB
Transimpedance
Common Mode Input Voltage Range
Common Mode Rejection Ratio
Supply Voltage Rejection Ratio
Maximum Output Voltage
IBZT
VICM
CMR
SVR
VOM
RL=150Ω, Vo=±2V
CMR≥50
-2≤VICM≤+2
+ ±3.5≤V /V ≤±17.5
0.25
±2
50
66
RL=1kΩ
±2.8
±3.3
-
V
Maximum Output Voltage
VOM
RL=150Ω
±2.4
±2.8
-
V
Input Bias Current
● AC CHARACTERISTICS (V+/V-=±5V, Ta=25ºC, unless otherwise noted.)
PARAMETER
SYMBOL
TEST CONDITION
MIN.
TYP.
MAX.
UNIT
Bandwidth
BW-3dB
GV=6dB, RF=680Ω, RG=680Ω, RL=150Ω, CL=1pF
GV=20dB, RF=680Ω, RG=75Ω, RL=150Ω, CL=1pF
-
52
16
-
MHz
MHz
BW0.1dB GV=6dB, RF=680Ω, RG=680Ω, RL=150Ω, CL=1pF
-
8
-
MHz
0.1dB Flatness
Slew Rate
SR
GV=6dB, RF=680Ω, RG=680Ω, RL=150Ω, CL=1pF,
Vo=2Vpp
-
180
-
V/us
Settling Time 0.1%
ts
GV=-1, RF=620Ω, RG=620Ω, RL=150Ω, CL=1pF,
Vo=2Vpp
-
50
-
ns
Equivalent Input Noise Voltage
Equivalent Input Noise Current
Vni
Ini+
f=100kHz
f=100kHz
-
5
13
-
nV/√Hz
pA/√Hz
Total Harmonic Distortion
THD
GV=6dB, RF=680Ω, RG=680Ω, RL=150Ω,
Vo=2Vpp, f=10MHz
-
-50
-
dBc
2nd Harmonic Distortion
HD2nd
GV=6dB, RF=680Ω, RG=680Ω, RL=150Ω,
Vo=2Vpp, f=10MHz
-
-60
-
dB
3rd Harmonic Distortion
HD3nd
GV=6dB, RF=680Ω, RG=680Ω, RL=150Ω,
Vo=2Vpp, f=10MHz
-
-50
-
dB
Differential Gain
DG
GV=6dB, RF=680Ω, RG=680Ω, RL=150Ω, CL=1pF,
VINDC=1/0, VIN=0.286V
-
0.05
-
%
Differential Phase
DP
GV=6dB, RF=680Ω, RG=680Ω, RL=150Ω, CL=1pF,
VINDC=1/0, VIN=0.286V
-
0.25
-
deg
-4-
Ver.2009-10-28
NJM2723
■ TYPICAL CHARACTERISTICS
Supply Current vs. Supply Voltage
4
Ta=+25ºC
3.5
3.5
Ta=+85ºC
3
2.5
Ta=-40ºC
2
1.5
1
0.5
3.0
2.5
V+/V-=±5V
2.0
1.5
1.0
0.0
0
2.5
5
7.5 10 12.5 15
+ Supply Voltage V /V [V]
17.5
20
-50
Maximum Output Voltage vs. Load Resistance
12
-25
0
25 50 75 100 125 150
Ambient Temperature [ºC]
Maximum Output Voltage vs. Load Resistance
V+/V-=±15V, VIN=±0.3V
15
V+/V-=±5V, VIN=±0.3V
5
Ta=+85ºC
4
Ta=-40ºC
9
3
Ta=+25ºC
6
Output Voltage [V]
Output Voltage [V]
V+/V-=±15V
0.5
0
Ta=+85ºC
3
0
-3
-6
Ta=+25ºC
2
Ta=-40ºC
1
0
-1
-2
-9
-3
-12
-4
-15
-5
10
0k
100
0k
1k
10k
Load Resistance [Ω]
10
0k
100k
Maximum Output Voltage vs. Supply Voltage
100
0k
1k
10k
Load Resistance [Ω]
100k
Maximum Output Voltage vs. Supply Voltage
VIN=±0.3V, RL=1kΩ
20
VIN=±0.3V, RL=150Ω
15
Ta=-40ºC
15
10
Maximum Output Voltage [V]
Maximum Output Voltage [V]
RF=680Ω, RG=680Ω, RT=50Ω
4.0
Supply Current [mA]
Supply Current [mA]
Supply Current vs. Temperature
RF=680Ω, RG=680Ω, RT=50Ω
Ta=+85ºC
Ta=+25ºC
5
Ta=-40ºC
0
-5
-10
-15
-20
10
Ta=+25ºC
5
Ta=+85ºC
0
-5
-10
-15
0
Ver.2009-10-28
2.5
5
7.5 10 12.5 15
+ Supply VoltageV /V [V]
17.5
20
0
2.5
5
7.5 10 12.5 15
+ Supply Voltage V /V [V]
17.5
20
-5-
NJM2723
■ TYPICAL CHARACTERISTICS
Input Bias Current vs. Temperature
Input Offset Voltage vs. Temperature
20
10.0
15
7.5
10
5
+
-
V /V =±5V
0
-5
V+/V-=±15V
-10
Input Bias Current [µA]
Input Offset Voltage [mV]
VIN=0V
V+/V-=±15V, VIN=0V
5.0
IB-
2.5
0.0
-2.5
IB+
-5.0
-7.5
-15
-20
-10.0
-50
-25
-50
0
25 50 75 100 125 150
Ambient Temperature [ºC]
-25
0
25 50 75 100 125 150
Ambient Temperature [ºC]
Input Bias Current vs. Temperature
V+/V-=±5V, VIN=0V
10.0
4.5
5.0
IB+
2.5
0.0
-2.5
IB-
-5.0
Transimpedance [MΩ]
7.5
Input Bias Current [µA]
Transimpedance vs. Temperature
5
-7.5
4
V+/V-=±15V
RL=1kΩ
3.5
3
2.5
2
V+/V-=±5V
RL=150Ω
1.5
1
0.5
-10.0
0
-50
-25
0
25 50 75 100 125 150
Ambient Temperature [ºC]
-50
-25
0
25 50 75 100 125 150
Ambient Temperature [ºC]
SVR vs. Temperature
CMR vs. Temperature
V+/V-=±15V
VICM=±12V
90
80
70
60
V+/V-=±5V
VICM=±2.25V
50
40
30
20
10
90
80
70
60
50
40
30
20
10
0
0
-50
-6-
V+/V-=±3.5V~±18V, ViN=0V
100
Supply Voltage Rejection Ratio [dB]
Common Mode Rejection Ratio[dB]
100
-25
0
25 50 75 100 125 150
Ambient Temperature[ºC]
-50
-25
0
25 50 75 100 125 150
Ambient Temperature [ºC]
Ver.2009-10-28
NJM2723
■ TYPICAL CHARACTERISTICS
Gain vs. Frequency
V+/V-=±5V, RF=680Ω, RL=150Ω, CL=0pF, Ta=25ºC
30
20
20
10
Voltage Gain[dB]
30
6dB
0
-10
10
-10
-20
-30
-30
20
1M
-40
100k
0M
1G
1000M
10M
100M
Frequency[Hz]
6dB
0
-20
-40
100k
0M
1M
10M
100M
Frequency[Hz]
Gain vs. Frequency (Load Capacitance)
Gain vs. Frequency (Load Capacitance)
V+/V-=±15V, Gv=+2, RF=680Ω, RL=1kΩ, Ta=25ºC
V+/V-=±5V, Gv=+2, RF=680Ω, RL=150Ω, Ta=25ºC
20
CL=100pF
15
15
CL=300pF
10
Voltage Gain[dB]
40
CL=10pF
5
0
-5
10
Voltage Gain[dB]
Voltage Gain[dB]
40
Gain vs. Frequency
V+/V-=±15V, RF=680Ω, RL=1kΩ, CL=0pF, Ta=25ºC
-5
-15
-15
10M
100M
Frequency[Hz]
1G
1000M
CL=10pF
0
-10
1M
CL=100pF
CL=300pF
5
-10
-20
100k
0M
1G
1000M
-20
100k
0M
1M
10M
100M
Frequency[Hz]
1G
1000M
-3dB Bandwidth vs Feedback Resistor RF
Gv=+2, Ta=25ºC
120
V+/V-=±15V
RL=1kΩ
-3dB Bandwidth [MHz]
100
80
60
40
20
V+/V-=±5V
RL=150Ω
0
400
Ver.2009-10-28
800
1200
1600
Feedback Resistor RF [Ω]
2000
-7-
NJM2723
■ TYPICAL CHARACTERISTICS
Pulse Response
Pulse Response
V+/V-=±15V, Gv=+2, RF=680Ω, RL=1kΩ, CL=0pF, VO=10Vpp
V+/V-=±5V, Gv=2, RF=680Ω, RL=150Ω, CL=0pF, VO=2Vpp, Ta=25ºC
Input
Input
2.5V/div.
0.5V/div.
Output
Output
5V/div.
1V/div.
50ns/div.
50ns/div.
Pulse Response
Pulse Response
V+/V-=±15V, Gv=-1, RF=680Ω, RL=1kΩ, CL=0pF, VO=10Vpp
V+/V-=±5V, Gv=-1, RF=680Ω, RL=150Ω, CL=0pF, VO=2Vpp, Ta=25ºC
Input
Input
5V/div.
1V/div.
Output
Output
5V/div.
1V/div.
50ns/div.
50ns/div.
Slew Rate vs. Feedback Resistor RF
2000
V+/V-=±15V, Gv=+2, Ta=25ºC
(Measured from 20% to 80%)
1750
Slew Rate [V/µs]
1500
rise
1250
1000
fall
750
500
250
0
0.4k
-8-
0.8k
1.2k
1.6k
Feedback Resistor RF [Ω]
2.0k
Ver.2009-10-28
NJM2723
■ TYPICAL CHARACTERISTICS
V+/V-=±15V, RL=1kΩ, Ta=25ºC
100
Input Noise vs. Frequency
100
V+/V-=±5V, RL=150Ω, Ta=25ºC
100
10
Voltage Noise
1
100
0k
Ver.2009-10-28
1k
10k
Frequency [Hz]
1
100k
Equivalent Input Noise
Voltage [nV/√Hz]
10
Equivalent Input Noise
Current [pA/√Hz]
Equivalent Input Noise
Voltage [nV/√Hz]
Current Noise
100
Current Noise
10
10
Voltage Noise
1
100
0k
1k
10k
Frequency [Hz]
Equivalent Input Noise
Current [pA/√Hz]
Input Noise vs. Frequency
1
100k
-9-
NJM2723
■ Application Note
● Choice of feedback resistor and gain resistor for current feedback operational Amplifier
The NJM2723 is a current feedback operational amplifier. Closed-loop bandwidth depends on the feedback resistor
value. Table1 shows recommended resistor values for a variety of useful closed-loop gains and supply voltages.
Figure1. Formula of non−inverting / inverting amplifier
RF
RF
RG
RG
-
VO
-
VIN
+
+
VIN
VO
Gv=1+RF/RG
Gv= -RF/RG
Table1. -3dB Bandwidth vs. Closed−loop Gain and Resistance Value
V+/V-=±15V
Closed-Loop Gain
RF[Ω]
RG[Ω]
+1
+2
+10
-1
-10
750
680
680
680
680
680
75
680
68
-3dB BW[MHz]
V+/V-=±5V
Closed-Loop Gain
RF[Ω]
RG[Ω]
-3dB BW[MHz]
120
76
20
65
25
+1
+2
+10
-1
-10
680
680
620
680
680
680
68
680
68
85
52
15
50
20
● In case of using Voltage follower
The feedback resistance must be inserted when using a current feedback amplifier as the voltage follower.
A current feedback amplifier cannot be used by connecting output pin and inverting input pin directly. (Figure2)
Figure2. Voltage follower circuit
RF
VIN
VO
+
● In case of using capacitive Feedback
For a current feedback amplifier stability operation, do not use a compensation capacitor in parallel with feedback
resistance. The dynamic impedance of capacitor in the feedback loop reduces the amplifier's stability.
Figure3. Non-stability circuit example
C
RF
RF
RG
VIN
+
(a). C connects in paraliel with RF
- 10 -
VO
RG
C
VIN
VO
+
(b). C connects to input pin
Ver.2009-10-28
NJM2723
■ MEMO
[CAUTION]
The specifications on this data book are only given for information,
without any guarantee as regards either mistakes or omissions. The
application circuits in this data book 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.2009-10-28
- 11 -
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