NJU77806
5.5nV/ Hz Low Noise, 500μA low Power,
Rail-to-Rail Output CMOS Operational Amplifier
FEATURES
●Equivalent
Input Noise Voltage
f=10Hz
11nV/√Hz
f=1kHz
5.5nV/√Hz
●Supply
Current
500μA typ.
●Gain
Bandwidth Product
4.4MHz
●Slew
Rate
1.1V/μs
●Supply
Voltage
Single Supply
1.8V to 5.5V
Dual Supply
±0.9V to ±2.75V
●Rail-to-Rail
Output (R
L
=10kΩ)
50mV from rail
●Ground
Sense
●Common-Mode
Input Voltage Range
V
SS
-0.1V to V
DD
-0.9V
●Input
Offset Voltage
2mV max.
●Input
Offset Voltage Drift
1.5µV/°C typ.
●RF-Noise
Immunity
●Package
SC-88A
DESCRIPTION
The NJU77806 is a single low noise rail-to-rail output
CMOS operational amplifier offer a low input voltage
noise density of 5.5nV/√Hz at 1kHz while consuming
only 500µA of supply current, and have wide gain
bandwidth of 4.4MHz and slew rate of 1.1V/µs. These
characteristics makes NJU77806 ideal when excellent
performance is required in low noise and low power
applications.
The very low noise of 5.5nV/√Hz at 1kHz and low 1/f
noise of 11nV/√Hz at 10Hz while consuming only
500µA of supply current, give the NJU77806 the wide
dynamic range necessary for preamps in microphones,
audio amplifiers, active filters and sensor amplifiers.
NJU77806
guaranteed
from
1.8V
to
5V
specifications. In addition to low noise and low supply
current, the NJU77806 operate on supplies as low as
1.8V. These features makes NJU77806 ideal for
battery powered applications.
The NJU77806 is high RF-immunity to reduce
malfunctions caused by RF noises from mobile phones
and others.
The NJU77806 is available in space saving 5-pin
SC-88A. The small package saves space on PC
boards, and enables the design of small portable
electronic devices.
APPLICATIONS
●Low-noise
microphone amplifier
●Photodiode
preamplifier
●Shock
Sensor application
●Acceleration
sensor application
●Security
equipment
●Wireless
LAN
●Radio
systems
TYPICAL CHARACTERISTIC
Voltage Noise vs. Frequency
Equivalent Input Noise Voltage [nV/ Hz]
PIN CONFIGURATION
50
45
40
35
30
25
20
15
10
5
0
10
V
DD
=5.0V
(Top View)
Pin
Function
conventional
Low Noise CMOS OP-AMP
+INPUT
V
SS
-INPUT
1
2
3
5
V
DD
4
OUTPUT
NJU77806
Package
SC-88A
Product
Name
NJU77806F3
100
1k
Frequency [Hz]
10k
© New Japan Radio Co.,Ltd.
Ver.00
[
1]
NJU77806
■
ABSOLUTE MAXIMUM RATINGS
PARAMETER
Supply Voltage
Input Voltage
Differential Input Voltage
Power Dissipation
SC-88A
Operating Temperature Range
Storage Temperature Range
(3)
(1)
SYMBOL
V
DD
V
ICM
V
ID
P
D
T
opr
T
stg
RATING
7
V
SS
- 0.3 to V
DD
+ 0.3
±7
(2)
UNIT
Power Dissipation P
D
[mW]
500
Power Dissipation vs. Temperature
V
V
V
mW
°C
°C
400
(2-layer)
280
-40 to +105
-55 to +125
300
200
100
(1) Differential voltage is the voltage difference between +INPUT and -INPUT.
0
(2) For supply voltage less than +7V, the absolute maximum rating is equal to
5
25
45
65
85
105
the supply voltage.
Ambient Temperature [ºC]
(3) Power dissipation is the power that can be consumed by the IC at Ta=25°C,
and is the typical measured value based on JEDEC condition.
When using the IC over Ta=25°C subtract the value [mW/°C]=P
D
/(Tstg(MAX)-25) per temperature.
2-layer: EIA/JEDEC STANDARD Test board (76.2x114.3x1.6mm, 2layers, FR-4) mounting
125
■
RECOMMENDED OPERATING CONDITIONS
(Ta=25°C)
PARAMETER
Supply Voltage
SYMBOL
V
DD
TEST CONDITION
MIN.
1.8
TYP.
-
MAX.
5.5
UNIT
V
© New Japan Radio Co.,Ltd.
Ver.00
[
2]
NJU77806
■
ELECTRICAL CHARACTERISTICS
(V
DD
=1.8 to 5.0V, V
SS
=0V, V
ICM
=V
DD
/2, Ta=25°C, unless otherwise noted.)
PARAMETER
DC CHARACTERISTICS
Supply Current
Input Offset Voltage
Input Offset Voltage Drift
Input Bias Current
Input Offset Current
Input capacitance
Voltage Gain
Common-Mode Rejection Ratio
Supply Voltage Rejection Ratio
Common-Mode Input Voltage Range
High-Level Output Voltage
Low-Level Output Voltage
AC CHARACTERISTICS
Slew Rate
Gain Bandwidth Product
Unity Gain Frequency
Equivalent Input Noise Voltage
SR
GBP
f
T
V
NI
V
NIPP
Total Harmonic Distortion + Noise
THD+N
G
V
=14dB
G
V
=40dB, f=100kHz
G
V
=40dB
f=1kHz
f=10Hz
f=0.1Hz to 10Hz
G
V
=20dB, f=1kHz, LPF=80kHz
V
DD
=5.0V, V
O
=4Vpp
V
DD
=1.8V, V
O
=1.5Vpp
-
-
0.005
0.01
-
-
%
-
-
-
-
-
-
1.1
4.4
2.4
5.5
11
0.25
-
-
-
-
-
-
V/µs
MHz
MHz
nV/√Hz
µVpp
I
DD
V
IO
ΔV
IO
/ΔT
Ta = -40ºC to 105ºC
I
B
I
IO
C
IN
A
V
CMR
SVR
V
ICM
V
OH
V
OL
R
L
=10kΩ to V
DD
/2
V
ICM
=-0.1V to V
DD
-0.9V
V
DD
=1.8V to 5.5V
CMR≥70dB
R
L
=10kΩ to V
DD
/2
Isource=1.5mA
R
L
=10kΩ to V
DD
/2
Isink=1.5mA
No Signal
-
-
-
-
-
-
70
70
70
-0.1
500
0.7
1.5
1
1
17
100
100
100
-
650
2
-
-
-
-
-
-
-
V
DD
-0.9
-
-
0.1
0.15
V
µA
mV
µV/ºC
pA
pA
pF
dB
dB
dB
V
SYMBOL
TEST CONDITION
MIN.
TYP.
MAX.
UNIT
V
DD
-0.1 V
DD
-0.05
V
DD
-0.15 V
DD
-0.1
-
-
0.05
0.1
Note
The closed gain should be 14dB(5V/V) or higher to prevent the oscillation. Unity gain follower application may cause the
oscillation. When the closed gain is lower than 14dB, please use a compensation capacitor (CF: about 20pF), parallel with the
feedback resistor R
F
to avoid oscillation. Details are shown on Input Capacitance of Application note.
CF
RG
RF
© New Japan Radio Co.,Ltd.
Ver.00
[
3]
NJU77806
■
TYPICAL CHARACTERISTICS
Supply Current vs. Supply Voltage
700
600
Ta=105ºC
Ta=25ºC
G
V
=0dB
Supply Current vs. Temperature
700
600
V
DD
=5V
G
V
=0dB
Supply Current [µA]
500
400
300
200
100
0
0
1
2
3
4
5
Supply Voltage [V]
6
7
Ta=-40ºC
Supply Current [µA]
500
400
300
200
100
0
-50
-25
0
25
50
75
100
Ambient Temperature [ºC]
125
V
DD
=1.8V
Input Offset Voltage Distribution
40%
35%
V
DD
=5.0V, Ta=25ºC, n=195
Input Offset Voltage Drift Distribution
40%
35%
V
DD
=5.0V, n=179
Percent of Amplifiers
30%
25%
20%
15%
10%
5%
0%
-0.6
-0.2
0.2
0.6
1.0
1.4
Input Offset Voltage [mV]
1.8
Percent of Amplifiers
30%
25%
20%
15%
10%
5%
0%
0.1
0.5
0.9
1.3
1.7
2.1
Input Offset Voltage Drift [µV/ºC]
2.5
Input Offset Voltage vs. Temperature
1.4
1.2
V
DD
=5.0V, n=80
Input Offset Voltage vs. Supply Voltage
4
3
V
ICM
=V
DD
/2
Input Offset Voltage [mV]
Input Offset Voltage [mV]
1
0.8
0.6
0.4
0.2
0
-50
-25
0
25
50
75
100
Ambient Temperature [ºC]
125
2
1
0
Ta=105ºC
Ta=25ºC
Ta=-40ºC
-1
-2
-3
0
1
2
3
4
5
Supply Voltage [V]
6
7
© New Japan Radio Co.,Ltd.
Ver.00
[
4]
NJU77806
■
TYPICAL CHARACTERISTICS
Input Offset Voltage
vs. Common-Mode Input Voltage
1.4
1.2
V
DD
=5.0V
Input Offset Voltage
vs. Common-Mode Input Voltage
1.4
1.2
V
DD
=1.8V
Input Offset Voltage [mV]
Input Offset Voltage [mV]
1
0.8
0.6
0.4
0.2
0
-0.6
Ta=105ºC
Ta=25ºC
1
0.8
0.6
0.4
0.2
0
Ta=105ºC
Ta=25ºC
Ta=-40ºC
Ta=-40ºC
0 0.6 1.2 1.8 2.4 3 3.6 4.2 4.8
Common-Mode Input Voltage [V]
-0.6
-0.3
0
0.3
0.6
0.9
1.2
Common-Mode Input Voltage [V]
1.5
Common-Mode and Supply Voltage
Rejection Ratio vs. Temperature
140
Common-Mode and Supply Voltage
Rejection Ratio [dB]
V
ICM
=V
DD
/2
Voltage Gain vs. Temperature
140
R
L
=10kΩ
to V
DD
/2
130
120
110
100
90
80
70
60
50
40
-50
-25
CMR (V
DD
=1.8V)
CMR (V
DD
=5.0V)
SVR
130
120
V
DD
=5V
Voltage Gain [dB]
110
100
90
80
70
60
50
40
V
DD
=1.8V
0
25
50
75
100
Ambient Temperature [ºC]
125
-50
-25
0
25
50
75
100
Ambient Temperature [ºC]
125
Maximum Output Voltage vs. Output Current
5.0
4.5
4.0
V
OH
Ta=-40ºC
V
DD
=5.0V
Maximum Output Voltage vs. Output Current
1.8
1.6
V
OH
Ta=-40ºC
Ta=25ºC
Ta=105ºC
V
DD
=1.8V
Output Voltage [V]
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
1
V
OL
Output Voltage [V]
Ta=25ºC
Ta=105ºC
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0.0
0.1
V
OL
Ta=105ºC
Ta=25ºC
Ta=-40ºC
Ta=105ºC
Ta=25ºC
Ta=-40ºC
10
100
Output Current [mA]
1
10
Output Current [mA]
© New Japan Radio Co.,Ltd.
Ver.00
[
5]
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