STMICROELECTRONICS LM2904PT

LM2904
Low Power Dual Operational Amplifier
■
Internally frequency compensated
■
Large DC voltage gain: 100dB
■
Wide bandwidth (unity gain): 1.1MHz
(temperature compensated)
■
Very low supply current/op (500µA) essentially
independent of supply voltage
■
Low input bias current: 20nA (temperature
compensated)
■
Low input offset current: 2nA
■
Input common-mode voltage range includes
ground
■
Differential input voltage range equal to the
power supply voltage
■
Large output voltage swing 0V to (VCC - 1.5V)
Description
This circuit consists of two independent, high
gain, internally frequency compensated which
were designed 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
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, these circuits can be directly supplied
with off the standard +5V which is used in logic
systems and will easily provide the required
interface electronics without requiring any
additional power supply.
In the linear mode the input common-mode
voltage range includes ground and the output
voltage can also swing to ground, even though
operated from only a single power supply voltage.
October 2005
N
DIP8
(Plastic Package)
D
SO-8
(Plastic Micropackage)
P
TSSOP8
(Thin Shrink Small Outline Package)
S
Mini SO-8
(Mini SO Package)
Pin Connection (top view)
1
8
2
-
3
+
4
7
-
6
+
5
Rev 3
1/15
www.st.com
15
LM2904
Order Codes
Part Number
Temperature Range
Package
Packing
Marking
LM2904N
DIP8
Tube
LM2904N
LM2904D/DT
SO-8
Tube or Tape & Reel
TSSOP8
(Thin Shrink Outline Package)
Tape & Reel
mini SO-8
Tape & Reel
SO-8 (automotive grade level)
Tube or Tape & Reel
LM2904YPT
TSSOP8 (automotive grade level)
Tape & Reel
LM2904YST
minI SO-8
(automotive grade level)
Tape & Reel
LM2904PT
LM2904ST
LM2904YD/YDT
-40, +125°C
2904
K403
2904Y
2/15
k409
LM2904
1
Absolute Maximum Ratings
Absolute Maximum Ratings
Table 1.
Key parameters and their absolute maximum ratings
Symbol
Parameter
Value
Unit
VCC
Supply Voltage
+32
V
Vid
Differential Input Voltage
+32
V
VI
Input Voltage
-0.3 to +32
V
Output Short-circuit to Ground (1)
ptot
Power Dissipation (2)
500
mW
Iin
Input Current (3)
50
mA
Toper
Operating Free-Air Temperature Range
-40 to +125
°C
Tstg
Storage Temperature Range
-65 to +150
°C
Thermal Resistance Junction to Ambient
Rthja
ESD
125
120
85
190
SO-8
TSSOP8
DIP8
MiniSO-8
°C/W
HBM: Human Body Model(4)
300
V
MM: Machine Model(5)
200
V
1.5
kV
CDM: Charged Device Model
Vcc+
1. Short-circuits from the output to V CC can cause excessive heating if
> 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. Power dissipation must be considered to ensure maximum junction temperature (Tj) is not
exceeded.
3. 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.
4. Human body model, 100pF discharged through a 1.5kΩ resistor into pin of device.
5. Machine model ESD, a 200pF cap is charged to the specified voltage, then discharged directly into
the IC with no external series resistor (internal resistor < 5Ω), into pin to pin of device.
3/15
Typical Application Schematic
2
LM2904
Typical Application Schematic
Figure 1.
Schematic Diagram (1/2 LM2904)
V CC
6µA
4µA
100µA
Q5
Q6
CC
Inverting
input
Q2
Q3
Q1
Q7
Q4
R SC
Q11
Non-inverting
input
Output
Q13
Q10
Q8
Q9
Q12
50mA
GND
4/15
LM2904
3
Electrical Characteristics
Electrical Characteristics
Table 2.
VCC+ = 5V, Vcc- = Ground, VO = 1.4V, Tamb = 25°C (unless otherwise specified)
Symbol
Parameter
Min.
Typ.
Max.
Unit
Vio
Input Offset Voltage (1)
Tamb = 25°C
Tmin ≤ Tamb ≤ T max.
2
7
9
mV
Iio
Input Offset Current
Tamb = 25°C
Tmin ≤ Tamb ≤ T max.
2
30
40
nA
Iib
Input Bias Current (2)
Tamb = 25°C
Tmin ≤ Tamb ≤ T max.
20
150
200
nA
Large Signal Voltage Gain
Avd
SVR
VCC+ = +15V,RL=2kΩ, Vo = 1.4V to 11.4V
Tamb = 25°C
Tmin ≤ Tamb ≤ T max.
50
25
100
V/
mV
Supply Voltage Rejection Ratio (RS ≤10kΩ)
Tamb = 25°C
Tmin ≤ Tamb ≤ T max.
65
65
100
dB
Supply Current, all Amp, no load
Icc
Tamb = 25°C, VCC = +5V
Tmin ≤ Tamb ≤ T max., VCC = +30V
0.7
Input Common Mode Voltage Range (Vcc= +30V) (3)
Tamb = 25°C
Tmin ≤ Tamb ≤ T max.
0
0
CMR
Common-mode Rejection Ratio (RS = 10kΩ)
Tamb = 25°C
Tmin ≤ Tamb ≤ T max.
70
60
85
Isource
Output Short-circuit Current
VCC = +15V, Vo = +2V, Vid = +1V
20
40
VO = 2V, V CC = +5V
VO = +0.2V, V CC = +15V
10
12
20
50
Output Voltage Swing (RL = 2kΩ
Tamb = 25°C
Tmin ≤ Tamb ≤ T max
0
0
Vicm
1.2
2
mA
VCC+ -1.5
V
VCC + -2
dB
60
mA
Output Sink Current
Isink
VOPP
mA
µA
VCC+ -1.5
V
VCC + -2
5/15
Electrical Characteristics
Symbol
VOH
LM2904
Parameter
High Level Output Voltage (Vcc + 30V)
Tamb = +25°C, RL = 2kΩ
Tmin ≤ Tamb ≤ T max.
Tamb = +25°C, RL = 10kΩ
Tmin ≤ Tamb ≤ T max.
26
26
27
27
Typ.
Max.
Unit
27
V
28
VOL
Low Level Output Voltage (RL = 10kΩ)
Tamb = +25°C
Tmin ≤ Tamb ≤ T max
SR
Slew Rate
Vcc = 15V, Vi = 0.5 to 3V, RL = 2kΩ, CL = 100pF,
unity gain
0.3
0.6
GBP
Gain Bandwidth Product f = 100kHz
Vcc = 30V, Vin = 10mV, RL = 2kΩ, CL = 100pF
0.7
1.1
THD
Total Harmonic Distortion
f = 1kHz, AV = 20dB, RL = 2kΩ, Vo = 2Vpp,
CL = 100pF, Vcc = 30V
5
20
20
mV
V/µs
MHz
%
0.02
DVio
Input Offset Voltage Drift
7
30
µV/
°C
DIio
Input Offset Current Drift
10
300
pA/
°C
(4)
VO1/VO2 Channel Separation
1kHz ≤ f ≤ 20kHz
1.
Min.
120
dB
VO = 1.4V, RS = 0Ω, 5V < V CC+ < 30V, 0V < V ic < VCC+ - 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 frequencies.
6/15
LM2904
Electrical Characteristics
Figure 2.
Open loop frequency response
Figure 3.
OPEN LOOP FREQUENCY RESPONSE (NOTE 3)
Large signal frequency response
LARGE SIGNAL FREQUENCY RESPONSE
20
140
100k Ω
10MΩ
1k Ω
VCC
VOLTAGE GAIN (dB)
-
100
VO
VI
VCC/2
OUTPUT SWING (Vpp)
0.1µF
120
+
80
VCC = 30V &
-55°C Tamb +125°C
60
40
20
VCC = +10 to + 15V &
-55°C Tamb +125°C
15
1.0
10
5
10
100
1k
10k
100k
1M
10M
1k
10k
Voltage follower pulse response
Figure 5.
OUTPUT CHARACTERISTICS
10
OUTPUT
VOLTAGE (V)
VCC = +5V
VCC = +15V
VCC = +30V
RL 2 kΩ
VCC = +15V
OUTPUT VOLTAGE (V)
3
2
1
0
3
2
1
v cc
v cc /2
IO
10
20
30
40
Tamb = +25°C
0,001
TIME (µs)
+
eO
-
50pF
400
Input
350
Output
300
Tamb = +25°C
VCC = 30 V
250
1
2
3
4
5
TIME (ms)
0,1
1
10
100
6
7
8
Output characteristics
OUTPUT CHARACTERISTICS
8
V CC
7
6
TO VCC+ (V)
500
Figure 7.
OUTPUT VOLTAGE REFERENCED
VOLTAGE FOLLOWER PULSSE RESPONSE
(SMALL SIGNAL)
el
0,01
OUTPUT SINK CURRENT (µ A)
Voltage follower pulse response
450
VO
+
0.01
0
-
0.1
1
0
1M
Output characteristics
4
INPUT
VOLTAGE (V)
100k
FREQUENCY (Hz)
VOLAGE FOLLOWER PULSE RESPONSE
OUTPUT VOLTAGE (mV)
2k Ω
+
+7V
FREQUENCY (Hz)
Figure 6.
VO
VI
0
0
Figure 4.
+15V
-
V CC /2
5
+
VO
IO
-
4
3
2
Independent of V CC
T amb = +25°C
1
0,001 0,01
0,1
1
10
100
OUTPUT SOURCE CURRENT (mA)
7/15
Electrical Characteristics
Figure 8.
LM2904
Input current
Figure 9.
Current limiting
CURRENT LIMITING (Note 1)
INPUT CURRENT (Note 1)
90
INPUT CURRENT (mA)
80
OUTPUT CURRENT (mA)
90
VI = 0 V
70
VCC = +30 V
60
50
VCC = +15 V
40
30
VCC = +5 V
20
-
80
IO
70
60
+
50
40
30
20
10
10
0
0
-55 -35
-15
5
25
45
65
85 105
-55 -35
125
TEMPERATURE (°C)
-15
5
25
45
65
85 105
125
TEMPERATURE (°C)
Figure 10. Input voltage range
Figure 11. Supply current
INPUT VOLTAGE RANGE
SUPPLY CURRENT
4
15
SUPPLY CURRENT (mA)
INPUT VOLTAGE (V)
VCC
10
Négative
Positive
5
ID
mA
3
-
2
+
Tamb = 0°C to +125°C
1
Tamb = -55°C
0
5
10
15
0
POWER SUPPLY VOLTAGE (±V)
30
Figure 13. Positive supply voltage
100
160
INPUT CURRENT (nA)
R L = 20kΩ
VOLTAGE GAIN (dB)
20
POSITIVE SUPPLY VOLTAGE (V)
Figure 12. Positive supply voltage
120
R L = 2k Ω
80
40
0
10
20
30
40
POSITIVE SUPPLY VOLTAGE (V)
8/15
10
75
50
25
Tamb= +25°C
0
10
20
30
POSITIVE SUPPLY VOLTAGE (V)
LM2904
Electrical Characteristics
Figure 15. Gain bandwidth product
GAIN BANDWIDTH PRODUCT (MHz)
Figure 14. Positive supply voltage
160
R L = 20k Ω
VOLTAGE GAIN (dB)
120
R L = 2k Ω
80
40
0
10
20
30
1.5
1.35
1.2
1.05
0.9
15V
0.6
0.45
0.3
0.15
0
-55-35-15 5 25 45 65 85 105 125
POSITIVE SUPPLY VOLTAGE (V)
TEMPERATURE (°C)
Figure 17. Common mode rejection ratio
COMMON MODE REJECTION RATIO (dB)
Figure 16. Power supply rejection ratio
POWER SUPPLY REJECTION RATIO (dB)
VCC =
0.75
115
110
SVR
105
100
95
90
85
80
75
70
65
60-55-35-15 5 25 45 65 85 105 125
TEMPERATURE (°C)
115
110
105
100
95
90
85
80
75
70
65
60-55-35-15 5 25 45 65 85 105 125
TEMPERATURE (°C)
Typical single - supply applications
Figure 18. AC coupled inverting amplifier
Rf
100kΩ
CI
R1
100kΩ
Rf
R1
(as shown AV = -10)
R1
10kΩ
1/2
LM2904
eI ~
R2
VCC 100kΩ
AV = -
Figure 19. AC coupled non-inverting amplifier
RB
6.2kΩ
R3
100kΩ
A V= 1 + R2
R1
(as shown A V = 11)
C1
0.1µF
Co
0
eo
R2
1MΩ
2VPP
CI
RL
10kΩ
Co
1/2
LM2904
0
eo
RB
6.2kΩ
eI ~
R3
1MΩ
2VPP
RL
10k Ω
R4
100kΩ
VCC
C1
10µF
C2
10µF
R5
100kΩ
9/15
Electrical Characteristics
LM2904
Figure 20. Non-inverting DC gain
Figure 21. DC summing amplifier
e1
100kΩ
A V = 1 + R2
R1
(As shown A V = 101)
10kΩ
eO
1/2
LM2904
100kΩ
e2
100kΩ
e3
100kΩ
100kΩ
e
O
R1
10kΩ
e4
0
100kΩ
eo = e1 + e2 - e3 - e4
where (e1 + e2) ≥ (e3 + e4)
to keep eo ≥ 0V
e I (mV)
Figure 22. High input Z, DC differential
amplifier
Figure 23. Using symmetrical amplifiers to
reduce input current
1/2
I
eI
R4
100kΩ
R2
100kΩ
R1
100kΩ
1/2
LM2904
IB
I
2N 929
0.001µ F
1/2
LM2904
Vo
IB
IB
If R1 = R5 and R3 = R4 = R6 = R7
eo = [ 1 + 2R1 ] (e2 - e1)
R2
As shown eo = 101 (e2 - e1)
3MΩ
IB
1.5MΩ
Figure 24. Low drift peak detector
1/2
LM2904
Input current compensation
Figure 25. Active bandpass filter
R1
100kΩ
IB
1/2
C
1µ F
ZI
2N 929
2IB
R
1M Ω
0.001µ F
IB
R5
470kΩ
R4
10MΩ
R3
100kΩ
C2
330pF
1/2
LM2904
R6
470kΩ
Vo
1/2
LM2904
IB
3R
3M Ω
1/2
LM2904
R2
100kΩ
+V1
Zo
2IB
C1
330pF
eo
I B LM2904
1/2
LM2904
10/15
eo
I B LM2904
R3
100kΩ
+V1
+V2
eI
eO
1/2
LM2904
(V)
R2
1M Ω
+5V
VCC
1/2
LM2904
Input current
compensation
R7
100kΩ
R8
100kΩ
Fo = 1kHz
Q = 50
Av = 100 (40dB)
C3
10µF
LM2904
4
Package Mechanical Data
Package Mechanical Data
In order to meet environmental requirements, ST offers these devices in ECOPACK® packages.
These packages have a Lead-free second level interconnect. The category of second level
interconnect is marked on the package and on the inner box label, in compliance with JEDEC
Standard JESD97. The maximum ratings related to soldering conditions are also marked on
the inner box label. ECOPACK is an ST trademark. ECOPACK specifications are available at:
www.st.com.
4.1
DIP8 Package
Plastic DIP-8 MECHANICAL DATA
mm.
inch
DIM.
MIN.
A
TYP
MAX.
MIN.
3.3
0.7
B
1.39
1.65
0.055
B1
0.91
1.04
0.036
b1
MAX.
0.130
a1
b
TYP.
0.028
0.5
0.38
0.041
0.020
0.5
D
0.065
0.015
0.020
9.8
0.386
E
8.8
0.346
e
2.54
0.100
e3
7.62
0.300
e4
7.62
0.300
F
7.1
0.280
I
4.8
0.189
L
Z
3.3
0.44
0.130
1.6
0.017
0.063
P001F
11/15
Package Mechanical Data
4.2
LM2904
SO-8 Package
SO-8 MECHANICAL DATA
DIM.
mm.
MIN.
TYP
inch
MAX.
MIN.
TYP.
MAX.
A
1.35
1.75
0.053
0.069
A1
0.10
0.25
0.04
0.010
A2
1.10
1.65
0.043
0.065
B
0.33
0.51
0.013
0.020
C
0.19
0.25
0.007
0.010
D
4.80
5.00
0.189
0.197
E
3.80
4.00
0.150
0.157
e
1.27
0.050
H
5.80
6.20
0.228
0.244
h
0.25
0.50
0.010
0.020
L
0.40
1.27
0.016
0.050
k
ddd
8˚ (max.)
0.1
0.04
0016023/C
12/15
LM2904
4.3
Package Mechanical Data
TSSOP8 Package
TSSOP8 MECHANICAL DATA
mm.
inch
DIM.
MIN.
TYP
A
MAX.
MIN.
TYP.
1.2
A1
0.05
A2
0.80
b
MAX.
0.047
0.15
0.002
1.05
0.031
0.19
0.30
0.007
0.012
c
0.09
0.20
0.004
0.008
D
2.90
3.00
3.10
0.114
0.118
0.122
E
6.20
6.40
6.60
0.244
0.252
0.260
E1
4.30
4.40
4.50
0.169
0.173
0.177
e
0.65
K
0˚
L
0.45
L1
1.00
0.60
1
0.006
0.039
0.041
0.0256
8˚
0˚
0.75
0.018
8˚
0.024
0.030
0.039
0079397/D
13/15
Package Mechanical Data
4.4
14/15
Mini SO-8 Package
LM2904
LM2904
5
Revision History
Revision History
Date
Revision
Changes
Jan. 2002
1
Initial release.
June 2005
2
1 - PPAP references inserted in the datasheet see table Order Codes
on page 2
2 - ESD protection inserted in Table 1.: Key parameters and their
absolute maximum ratings on page 4.
Oct. 2005
3
PPAP part numbers added in table Order Codes on page 2.
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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15/15