NJM2904
-1-
Ver.2007-05-11
SINGLE-SUPPLY DUAL OPERATIONAL AMPLIFIER
■ GENERAL DESCRIPTION ■ PACKAGE OUTLINE
The NJM2904 consists of two independent, high gain,
internally frequency compensated operation amplifiers, which
were designed specifically to operate from a single power
supply over a wide range of voltages. Operation from split
power supplies is also possible and the low power supply
current drain is independent of the magnitude of the power
supply voltage.
Application areas include transducer amplifiers, DC gain
blocks, and all the conventional op amp circuits, which now can
be more easily implemented in single power supply systems.
For example, the NJM2904 can be directly operated off of the
standard +5V power supply voltage, which is used in digital
systems and will easily provide the required interface electronics
without requiring the additional ±15V power supplies.
■ FEATURES
● Single Supply
● Operating Voltage ( +3V~+32V )
● Low Operating Current ( 0.7mA typ. )
● Slew Rate ( 0.5V/µs typ. )
● Bipolar Technology
● Package Outline DIP8, DMP8, EMP8, SSOP8, TVSP8, SIP8
■ PIN CONFIGURATION
■ EQUIVALENT CIRCUIT ( 1/2 Shown )
PIN FUNCTION
1. A OUTPUT
2. A –INPUT
3. A +INPUT
4. GND
5. B +INPUT
6. B –INPUT
7. B OUTPUT
8. V
+
8
7
6
5
1
2
3
4
A
B
( Top View )
NJM2904D, NJM2904M
NJM2904E, NJM2904V
NJM2904RB1
A B
1 234567 8
NJM2904L
NJM2904D NJM2904M
NJM2904E NJM2904V
NJM2904L
NJM2904RB1
NJM2904
- 2 -
Ver.2007-05-11
■ 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 V
( DIP8 ) 500
( DMP8 ) 300
( EMP8 ) 300
( SSOP8 ) 300
( TVSP8 ) 320
Power Dissipation P
D
( SIP8 ) 800
mW
Operating Temperature Range T
opr
-40~+85 ˚C
Storage Temperature Range T
stg
-50~+125 ˚C
■ ELECTRICAL CHARACTERISTICS
( Ta=25˚C,V
+
=5V )
PARAMETER SYMBOL TEST CONDITION MIN. TYP. MAX. UNIT
Input Offset Voltage V
IO
R
S
=0Ω - 2 7 mV
Input Offset Current I
IO
- 5 50 nA
Input Bias Current I
B
- 25 250 nA
Large Signal Voltage Gain A
V
R
L
≥2kΩ - 100 - dB
Maximum Output Voltage Swing V
OM
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 30 - 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
=∞ - 0.7 1.2 mA
Slew Rate SR V
+
/V
-
=±15V - 0.5 - V/µs
Unity Gain Bandwidth f
T
V
+
/V
-
=±15V
- 0.6 - MHz
NJM2904
-
3
-
Ver.2007-05-11
■ TYPICAL CHARACTERISTICS
NJM2904
- 4 -
Ver.2007-05-11
■ TYPICAL CHARACTERISTICS
NJM2904
-
5
-
Ver.2007-05-11
■ TYPICAL CHARACTERISTICS
NJM2904
-
6
-
Ver.2007-05-11
■ 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
NJM2904,in its static state ( No in and output condition ) when
design,Q
U
being biassed by constant current ( break down
beam ) yet,Q
L
stays OFF.
While using with both power source mode,the cross-ove
r
distortion might occur instantly when Q
L
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 Q
U
than the load
current ( including feedback current ),and then connect th
e
pull-down resister R
P
at the part between output and GND pins.
