NJM2902
-
1
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Ver.2012-01-30
QUAD SINGLE-SUPPLY OPERATIONAL AMPLIFIER
■ GENERAL DESCRIPTION ■ PACKAGE OUTLINE
The NJM2902 consists of four independent high-gain
operational amplifiers that are designed for single-supply
operation.
Operation from split power supplies is also possible and the low
power supply drain is independent of the magnitude of the power
supply voltage.
Used with a dual supply the circuit will operate over a wide
range of supply voltages. However, a large amount of crossover
distortion may occur with loads to ground. An external
current-sinking resistor to-VS will reduce crossover distortion.
There is no crossover distortion problem in single-supply
operation if the load is direct-coupled to ground.
■ FEATURES
● Single Supply
● Operating Voltage ( +3V~+32V )
● High Output Voltage ( V+-2V )
● Slew Rate ( 0.5V/µs typ. )
● Low Operating Current ( 1mA typ. )
● Package Outline DIP14, DMP14, SSOP14
● Bipolar Technology
■ PIN CONFIGURATION
■ EQUIVALENT CIRCUIT ( 1/4 Shown )
NJM2902N, NJM2902M
NJM2902V
PIN FUNCTION
1.A OUTPUT 8.C OUTPUT
2.A –INPUT 9.C -INPUT
3.A +INPUT 10.C +INPUT
4.V
+
11.V
-
5.B +INPUT 12.D +INPUT
6.B –INPUT 13.D -INPUT
7.B OUTPUT 14.D OUTPUT
NJM2902N NJM2902M
NJM2902V
V
-
NJM2902
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2
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Ver.2012-01-30
■ ABSOLUTE MAXIMUM RATINGS
( Ta=25˚C )
PARAMETER SYMBOL RATINGS UNIT
Supply Voltage V
+
(V
+
/V
-
) 32 ( or ± 16 ) V
Differential Input Voltage V
ID
32 V
Input Voltage V
IC
-0.3~ 32(Note2) V
( DIP14 ) 570
( DMP14 ) 300
Power Dissipation P
D
( SSOP14 ) 300
mW
Operating Temperature Range T
opr
-40~+85 ˚C
Storage Temperature Range T
stg
-50~+125 ˚C
(Note1) Continuous short-circuits from output to GND is guaranteed only when V+≤15V.
(Note2) For supply voltage less than 32V[±16], the absolute maximum input voltage is equal to supply voltage.
■ ELECTRICAL CHARACTERISTICS
( Ta=25˚C,V+=5V
)
PARAMETER SYMBOL TEST CONDITION MIN. TYP. MAX. UNIT
Input Offset Voltage V
IO
R
S
=0Ω - 2 10 mV
Input Offset Current I
IO
I
IN+
-I
IN-
- 5 50 nA
Input Bias Current I
B
I
IN+
or I
IN-
- 20 500 nA
Large Signal Voltage Gain A
V
R
L
>2kΩ - 100 - V/mV
Maximum Output Voltage Swing V
OPP
R
L
=2kΩ 3.5 - - V
Input Common Mode Voltage Range V
ICM
0~3.5 - - V
Common Mode Rejection Ratio CMR - 85 - dB
Supply Voltage Rejection Ratio SVR - 100 - dB
Output Source Current I
SOURCE
V
IN+
=1V,V
IN-
=0V 20 40 - mA
Output Sink Current I
SINK
V
IN+
=0V,V
IN-
=1V 8 20 - mA
Channel Separation CS f=1k~20kHz,Input Referred - 120 - dB
Operating Current I
CC
R
L
=∞ - 1 2 mA
Slew Rate SR V
+
/V
-
=±15V - 0.5 - V/µs
Gain Bandwidth Product GB V
+
/V
-
=±15V - 0.5 - MHz
NJM2902
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3
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Ver.2012-01-30
■ TYPICAL CHARACTERISTICS
NJM2902
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4
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Ver.2012-01-30
■ TYPICAL CHARACTERISTICS
NJM2902
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5
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Ver.2012-01-30
■ TYPICAL CHARACTERISTICS
NJM2902
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6
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Ver.2012-01-30
■ APPLICATION
[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.
Improvement of Cross-over Distortion
Equivalent circuit at the output stage
NJM2902,in its static state ( No in and output condition ) when
design, QU being biassed by constant current ( break down
beam ) yet, QL stays OFF.
While using with both power source mode, the cross-ove
r
distortion might occur instantly when QL ON.
There might be cases when application for amplifier of audi
o
signals, not only distortion but also the apparent frequenc
y
bandwidth being narrowed remarkably.
It is adjustable especially when using both power sourc
e
mode, constantly to use with higher current on QU than the load
current ( including feedback current ),and then connect th
e
pull-down resister RP at the part between output and V- pins.
V
-