1/10
s
INTERNALLY FREQUENCY COMPENSATED
s
LARGE DC VOLTAGE GAIN : 100dB
s
WIDE BANDWIDTH (unity gain) : 1.1MHz
(temperature compensated)
s
VERY LOW SUPPLY CURRENT/OP (500A)
s
LOW INPUT BIAS CURRENT : 20nA
(temperature compensated)
s
LOW INPUT OFFSET CURRENT : 2nA
s
INPUT COMMON-MODE VOLTAGE RANGE
INCLUDES GROUND
s
DIFFERENTIAL INPUT VOLTAGE RANGE
EQUAL TO THE POWER SUPPLY VOLTAGE
s
LARGE OUTPUT VOLTAGE SWING 0V TO
(V
CC
- 1.5V)
s
ESD INTERNAL PROTECTION : 2kV
DESCRIPTION
This circuit consists of two independent, high gain,
internally frequency compensated which were de-
signed specifically for automotive and industrial
control system. It operates from a single power
supply over a wide range of voltages. The low
power supply drain is independent of the magni-
tude 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 implement-
ed in single power supply ssystems. For example,
these circuits can be directly supplied with off the
standard +5V which is used in logic systems and
will easily provide the required interface electron-
ics without requiring any additional power supply.
In the linear mode the input common-mode volt-
age range includes ground and the output voltage
can also swing to groung, even though operated
from only a single power supply voltage.
ORDER CODE
N = Dual in Line Package (DIP)
D = Small Outline Package (SO) - also available in Tape & Reel (DT)
P = Thin Shrink Small Outline Package (TSSOP) - only available
in Tape & Reel (PT)
PIN CONNECTIONS (top view)
Part
Number
Temperature
Range
Package
N
D
P
LM2904W
-40C, +125C
N
DIP8
(Plastic Package)
D
SO8
(Plastic Micropackage)
P
TSSOP8
(Thin Shrink Small Outline Package)
1
2
3
4
5
6
7
8
-
+
-
+
LM2904W
LOW POWER DUAL OPERATIONAL AMPLIFIERS
September 2003
LM2904W
2/10
SCHEMATIC DIAGRAM (1/2 LM2904W)
ABSOLUTE MAXIMUM RATINGS
OPERATING CONDITIONS
Symbol
Parameter
Value
Unit
V
CC
Supply Voltage
+32
V
V
id
Differential Input Voltage
-0.3v to Vcc + 0.3
V
V
I
Input Voltage
-0.3v to Vcc + 0.3
V
ESD
Human Body Model
3)
2
kV
Output Short-circuit Duration
1)
Infinite
s
p
tot
Power Dissipation
500
mW
I
in
Input Current
2)
50
mA
T
oper
Operating Free-Air Temperature Range
-40 to +125
C
T
stg
Storage Temperature Range
-65 to +150
C
1.
Short-circuits from the output to V
cc
can cause excessive heating if Vcc
+
> 15V. The maximum output current is approximately 40mA,
independent of the magnitude of V
cc
. Destructive dissipation can result from simultaneous short-circuits on all amplifiers.
2.
This input current only exists when the voltage at any of the input leads is driven negative. It is due to the collector-base junction of the input PNP
transistor becoming forward biased and thereby acting as input diodes clamps. In addition to this diode action, there is also NPN parasitic action on
the IC chip. this transistor action can cause the output voltages of the Op-amps to go to the V
CC
voltage level (or to ground for a large overdrive)
for the time duration than an input is driven negative.
This is not destructive and normal output will set up again for input voltage higher than -0.3V
3)
Human body model, 100pF discharged through a 1.5K
resistor, into pin to pin of device.
Symbol
Parameter
Value
Unit
V
CC
+
Supply Voltage
3 to 30
V
V
icm
Common Mode Input Voltage Range
V
CC
+
- 1.5
V
LM2904W
3/10
ELECTRICAL CHARACTERISTICS
V
CC
+
= 5V, V
cc
-
= Ground, V
O
= 1.4V, T
amb
= 25C (unless otherwise specified)
Symbol
Parameter
Min.
Typ.
Max.
Unit
V
io
Input Offset Voltage
1)
T
amb
= 25C
T
min
T
amb
T
max
.
2
7
9
mV
I
io
Input Offset Current
T
amb
= 25C
T
min
T
amb
T
max.
2
30
40
nA
I
ib
Input Bias Current
2)
T
amb
= 25C
T
min
T
amb
T
max.
20
150
200
nA
A
vd
Large Signal Voltage Gain
V
CC
+
= +15V,R
L
=2k
, V
o
= 1.4V to 11.4V
T
amb
= 25C
T
min
T
amb
T
max.
50
25
100
V/mV
SVR
Supply Voltage Rejection Ratio (R
S
10k
)
T
amb
= 25C
T
min
T
amb
T
max.
65
65
100
dB
I
cc
Supply Current, all Amp, no load
T
amb
= 25C
V
CC
= +5V
T
min
T
amb
T
max.
V
CC
= +30V
0.7
1.2
2
mA
V
icm
Input Common Mode Voltage Range (V
cc
= +30V)
3)
T
amb
= 25C
T
min
T
amb
T
max.
0
0
V
CC
+
-1.5
V
CC
+
-2
V
CMR
Common-mode Rejection Ratio (R
S
=
10k
)
T
amb
= 25C
T
min
T
amb
T
max.
70
60
85
dB
I
source
Output Short-circuit Current
V
CC
= +15V, V
o
= +2V, V
id
= +1V
20
40
60
mA
I
sink
Output Sink Current
V
O
= 2V
V
CC
= +5V
V
O
= +0.2V
V
CC
= +15V
10
12
20
50
mA
V
OPP
Output Voltage Swing (R
L
=
2k
T
amb
= 25C
T
min
T
amb
T
max
0
0
V
CC
+
-1.5
V
CC
+
-2
V
V
OH
High Level Output Voltage (V
cc
+ 30V)
T
amb
= +25C
R
L
=
2k
T
min
T
amb
T
max.
T
amb
= +25C
R
L
=
10k
T
min
T
amb
T
max.
26
26
27
27
27
28
V
V
OL
Low Level Output Voltage (R
L
=
10k
)
T
amb
= +25C
T
min
T
amb
T
max
5
20
20
mV
SR
Slew Rate
V
cc
= 15V, Vi = 0.5 to 3V, R
L
=
2k
, C
L
= 100pF,
unity gain
0.3
0.6
V/s
GBP
Gain Bandwidth Product f = 100kHz
V
cc
= 30V,V
in
= 10mV, R
L
=
2k
, C
L
= 100pF
0.7
1.1
MHz
LM2904W
4/10
THD
Total Harmonic Distortion
f = 1kHz, A
V
= 20dB, R
L
= 2k
, V
o
= 2Vpp,
C
L
= 100pF, V
cc
= 30V
0.02
%
DV
io
Input Offset Voltage Drift
7
30
V/C
DI
io
Input Offset Current Drift
10
300
pA/C
V
O1
/V
O2
Channel Separation
4)
1kHz
f
20kHz
120
dB
1.
V
O
=
1.4V, R
S
= 0
, 5V < V
CC
+
< 30V, 0V < V
ic
< V
CC
+
- 1.5V
2.
The direction of the input current is out of the IC. This current is essentially constant, independent of the state of the output, so no loading charge
change exists on the input lines
3.
The input common-mode voltage of either input signal voltage should not be allowed to go negative by more than 0.3V. The upper end of the
common-mode voltage range is V
CC
+
1.5V, but either or both inputs can go to +32V without damage.
4.
Due to the proximity of external components insure that coupling is not originating via stray capacitance between these external parts. This typically
can be detected as this type of capacitance increases at higher frequences.
Symbol
Parameter
Min.
Typ.
Max.
Unit
VOLTAGE
G
AIN
(
dB)
OPEN LOOP FREQUENCY RESPONSE
(NOTE 3)
1.0
10
100
1k
10k
100k
1M
10M
VCC = +10 to + 15V &
FREQUENCY (Hz)
10M
VI
VCC/2
VCC = 30V &
0.1
F
VCC V
O
-
+
-55C
Tamb
+125C
140
120
100
80
60
40
20
0
-55C
Tamb
+125C
LARGE SIGNAL FREQUENCY RESPONSE
FREQUENCY (Hz)
1k
10k
100k
1M
OUTPUT
S
WING
(Vpp)
+7V
2k
1k
100k
+15V
VO
-
+
VI
20
15
10
5
0
INPUT
VOLTAGE
(
V)
OUT
P
UT
VOLTAGE
(
V)
VOLAGE FOLLOWER PULSE RESPONSE
0
10
20
30
40
TIME (
s)
RL
2 k
VCC = +15V
4
3
2
1
0
3
2
1
OUTPUT CHARACTERISTICS
OUTPUT SINK CURRENT (
A)
0,001
0,01
0,1
1
10
100
OUTPUT
V
OLTA
GE
(
V
)
VCC = +5V
VCC = +15V
VCC = +30V
-
IO
VO
Tamb = +25C
vcc/2
vcc
+
10
1
0.1
0.01
LM2904W
5/10
OUTPUT VOLTAGE (mV)
VOLTAGE FOLLOWER PULSSE RESPONSE
(SMALL SIGNAL)
0 1 2 3 4 5 6 7 8
Input
Tamb = +25C
VCC = 30 V
Output
eO
el
50pF
+
-
TIME (
m
s)
500
450
400
350
300
250
OUTPUT VOLTAGE REFERENCED
TO V
CC
+ (V)
OUTPUT CHARACTERISTICS
0,01
0,1
1
10 100
0,001
Independent of VCC
Tamb = +25C
+
-
VCC
VO
IO
VCC /2
OUTPUT SOURCE CURRENT (mA)
8
7
6
5
4
3
2
1
INPUT CURRENT (mA)
INPUT CURRENT (Note 1)
-55 -35 -15
5
25
45 65
85 105 125
VI = 0 V
VCC = +30 V
VCC = +15 V
VCC = +5 V
TEMPERATURE (C)
90
80
70
60
50
40
30
20
10
0
OUTPUT CURRENT (mA)
CURRENT LIMITING (Note 1)
-
+
IO
TEMPERATURE (C)
90
80
70
60
50
40
30
20
10
0
-55 -35 -15
5
25
45 65
85 105 125
INPUT VOLTAGE (V)
INPUT VOLTAGE RANGE
0
5
10
15
POWER SUPPLY VOLTAGE (V)
Ngative
Positive
15
10
5
SUPPLY CURRENT (mA)
SUPPLY CURRENT
0
10
20
30
Tamb = -55C
VCC
mA
ID
-
+
Tamb = 0C to +125C
POSITIVE SUPPLY VOLTAGE (V)
4
3
2
1
0
10
20
30
40
POSITIVE SUPPLY VOLTAGE (V)
VOLTAGE
G
AIN
(
dB)
160
120
80
40
L
R = 20k
L
R = 2k
0 10 20 30
POSITIVE SUPPLY VOLTAGE (V)
INPUT CURRENT (nA)
100
75
50
25
amb
T = +25C
LM2904W
6/10
TYPICAL SINGLE - SUPPLY APPLICATIONS
AC COUPLED INVERTING AMPLIFIER
AC COUPLED NON-INVERTING AMPLIFIER
NON-INVERTING DC GAIN
0
10
20
30
POSITIVE SUPPLY VOLTAGE (V)
VOLTAGE
G
AIN
(
dB)
160
120
80
40
L
R = 20k
L
R = 2k
-55-35-15 5 25 45 65 85 105 125
TEMPERATURE (C)
GAIN BANDWIDTH PRODUCT (MHz)
CC
V = 15V
1.5
1.35
1.2
1.05
0.9
0.75
0.6
0.45
0.3
0.15
0
-55-35-15 5 25 45 65 85 105 125
TEMPERATURE (C)
POWER SUPPLY REJECTION RATIO (dB)
SVR
115
110
105
100
95
90
85
80
75
70
65
60
-55-35-15 5 25 45 65 85 105 125
TEMPERATURE (C)
COMMON MODE REJECTION RATIO (dB)
115
110
105
100
95
90
85
80
75
70
65
60
1/2
LM2904
~
0
2V
PP
R
10k
L
C
o
e
o
R
6.2k
B
R
100k
f
R1
10k
C
I
e
I
V
CC
R2
100k
C1
10
F
R3
100k
A
= -
R
R1
V
f
(as shown A
= -10)
V
1/2
LM2904
~
0
2V
PP
R
10k
L
C
o
e
o
R
6.2k
B
C1
0.1
F
e
I
V
CC
(as shown A
= 11)
V
A = 1 + R2
R1
V
R1
100k
R2
1M
C
I
R3
1M
R4
100k
R5
100k
C2
10
F
R1
10k
R2
1M
1/2
LM2904
10k
e
I
e
O
+5V
e
O
(V
)
(mV)
0
A
V
= 1 +
R2
R1
(As shown
= 101)
A
V
LM2904W
7/10
DC SUMMING AMPLIFIER
HIGH INPUT Z, DC DIFFERENTIAL AMPLIFIER
USING SYMMETRICAL AMPLIFIERS TO
REDUCE INPUT CURRENT
HIGH INPUT Z ADJUSTABLE GAIN DC
INSTRUMENTATION AMPLIFIER
LOW DRIFT PEAK DETECTOR
ACTIVER BADPASS FILTER
1/2
LM2904
e
O
e
4
e
3
e
2
e
1
100k
100k
100k
100k
100k
100k
eo = e1 + e2 - e3 - e4
where (e1 + e2)
(e3 + e4)
to keep eo
0V
+
1/2
LM2904
R1
100k
R2
100k
R4
100k
R3
100k
+V2
V1
V
o
1/2
LM2904
If R1 = R5 and R3 = R4 = R6 = R7
eo = [ 1 + ] (e2 - e1)
As shown eo = 101 (e2 - e1)
2R1
R2
I
B
2N 929
0.001
F
I
B
3M
I
B
e
o
I
I
e
I
I
B
I
B
Input current compensation
1.5M
1/2
LM2904
1/2
LM2904
1/2
LM2904
I
B
2N 929
0.001
F
I
B
3R
3M
I
B
Input current
compensation
e
o
I
B
e
I
Z
o
Z
I
C
1
F
2I
B
R
1M
2I
B
1/2
LM2904
1/2
LM2904
1/2
LM2904
R8
100k
C3
10
F
R7
100k
R5
470k
C1
330pF
V
o
V
CC
R6
470k
C2
330pF
R4
10M
R1
100k
R2
100k
+V1
R3
100k
1/2
LM2904
1/2
LM2904
Fo = 1kHz
Q = 50
Av = 100 (40dB)
R3
100k
e
O
R1
100k
e
1
1/2
LM2904
R7
100k
R6
100k
R5
100k
e
2
R2
2k
Gain adjust
R4
100k
1/2
LM2904
1/2
LM2904
If R1 = R5 and R3 = R4 = R6 = R7
eo = [ 1 + ] (e2 - e1)
As shown eo = 101 (e2 - e1)
2R1
R2
LM2904W
8/10
PACKAGE MECHANICAL DATA
8 PINS - PLASTIC DIP
Dim.
Millimeters
Inches
Min.
Typ.
Max.
Min.
Typ.
Max.
A
3.32
0.131
a1
0.51
0.020
B
1.15
1.65
0.045
0.065
b
0.356
0.55
0.014
0.022
b1
0.204
0.304
0.008
0.012
D
10.92
0.430
E
7.95
9.75
0.313
0.384
e
2.54
0.100
e3
7.62
0.300
e4
7.62
0.300
F
6.6
0260
i
5.08
0.200
L
3.18
3.81
0.125
0.150
Z
1.52
0.060
LM2904W
9/10
PACKAGE MECHANICAL DATA
8 PINS - PLASTIC MICROPACKAGE (SO)
Dim.
Millimeters
Inches
Min.
Typ.
Max.
Min.
Typ.
Max.
A
1.75
0.069
a1
0.1
0.25
0.004
0.010
a2
1.65
0.065
a3
0.65
0.85
0.026
0.033
b
0.35
0.48
0.014
0.019
b1
0.19
0.25
0.007
0.010
C
0.25
0.5
0.010
0.020
c1
45 (typ.)
D
4.8
5.0
0.189
0.197
E
5.8
6.2
0.228
0.244
e
1.27
0.050
e3
3.81
0.150
F
3.8
4.0
0.150
0.157
L
0.4
1.27
0.016
0.050
M
0.6
0.024
S
8 (max.)
LM2904W
10/10
PACKAGE MECHANICAL DATA
8 PINS -THIN SHRINK SMALL OUTLINE PACKAGE
Dim.
Millimeters
Inches
Min.
Typ.
Max.
Min.
Typ.
Max.
A
1.20
0.05
A1
0.05
0.15
0.01
0.006
A2
0.80
1.00
1.05
0.031
0.039
0.041
b
0.19
0.30
0.007
0.15
c
0.09
0.20
0.003
0.012
D
2.90
3.00
3.10
0.114
0.118
0.122
E
6.40
0.252
E1
4.30
4.40
4.50
0.169
0.173
0.177
e
0.65
0.025
k
0
8
0
8
l
0.50
0.60
0.75
0.09
0.0236
0.030
L
0.45
0.600
0.75
0.018
0.024
0.030
L1
1.000
0.039
C
L
14
8
5
L1
c
0.25mm
.010 inch
GAGE PLANE
E1
k
L
L1
E
SEA
TING
PLANE
A
A2
D
A1
b
5
8
4
1
PIN 1 IDENTIFICATION
e
Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the
consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from
its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications
mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information
previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or
systems without express written approval of STMicroelectronics.
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All other names are the property of their respective owners.
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