STMICROELECTRONICS LM2904W

LM2904W
Low power dual operational amplifier
Features
■
Internally frequency compensated
■
Large DC voltage gain: 100dB
■
Wide bandwidth (unity gain): 1.1MHz
(temperature compensated)
■
Very low supply current/op (500µA)
■
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)
■
ESD internal protection: 2kV
N
DIP8
(Plastic package)
D
SO-8
(Plastic micropackage)
P
TSSOP8
(Thin shrink small outline package)
Description
This circuit consists of two independent, high
gain, internally frequency compensated
operational-amplifiers, 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.
Pin connections (top view)
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 2006
Rev 6
1/19
www.st.com
19
Contents
LM2904W
Contents
1
Schematic diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2
Absolute maximum ratings and operating conditions . . . . . . . . . . . . . 4
3
Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Typical single-supply applications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
4
Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
4.1
SO-8 package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
4.2
DIP8 package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4.3
TSSOP8 package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
5
Ordering information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
6
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
2/19
LM2904W
1
Schematic diagram
Schematic diagram
Figure 1.
Schematic diagram (1/2 LM2904W)
3/19
Absolute maximum ratings and operating conditions
2
LM2904W
Absolute maximum ratings and operating conditions
Table 1.
Absolute maximum ratings
Symbol
Parameter
Value
Unit
+32
V
VCC
Supply voltage
Vid
Differential input voltage
-0.3V to VCC + 0.3
V
VI
Input voltage
-0.3V to VCC + 0.3
V
Infinite
s
500
mW
50
mA
Output short-circuit duration(1)
ptot
Iin
Power dissipation
Input current
(2)
Toper
Operating free-air temperature range
-40 to +125
°C
Tstg
Storage temperature range
-65 to +150
°C
ambient(3) (4)
Rthja
Thermal resistance junction to
SO-8
TSSOP8
DIP-8
Rthjc
Thermal resistance junction to case
SO-8
TSSOP8
DIP-8
Tstg
Storage temperature range
HBM: human body model
ESD
MM: machine
125
120
85
40
37
41
(5)
model(6)
CDM: charged device model(7)
°C/W
°C/W
-65 to +150
°C
2
kV
200
V
1.5
kV
+
1. Short-circuits from the output to VCC can cause excessive heating if VCC > 15V. The maximum output
current is approximately 40mA, independent of the magnitude of VCC. 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
diode 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 VCC voltage level (or to ground
for a large overdrive) for the time during which an input is driven negative. This is not destructive and
normal output is restored for input voltages above -0.3V.
3. Short-circuits can cause excessive heating and destructive dissipation.
4. Rth are typical values.
5. Human body model: 100pF discharged through a 1.5kΩ resistor between two pins of the device, done for
all couples of pin combinations with other pins floating.
6. Machine model: a 200pF cap is charged to the specified voltage, then discharged directly between two pins
of the device with no external series resistor (internal resistor < 5Ω), done for all couples of pin
combinations with other pins floating.
7. Charged device model: all pins plus package are charged together to the specified voltage and then
discharged directly to the ground.
4/19
LM2904W
Table 2.
Absolute maximum ratings and operating conditions
Operating conditions
Symbol
Parameter
VCC
Supply voltage
Vicm
Common mode input voltage range
Value
Unit
3 to 30
V
VCC+ - 1.5
V
5/19
Electrical characteristics
LM2904W
3
Electrical characteristics
Table 3.
VCC+ = 5V, VCC- = Ground, VO = 1.4V, Tamb = 25°C (unless otherwise specified)
Symbol
Parameter
Conditions
Min.
Typ.
Max.
Unit
Vio
Input offset voltage (1)
Tamb = 25°C
Tmin ≤ Tamb ≤ Tmax
2
7
9
mV
Iio
Input offset current
Tamb = 25°C
Tmin ≤ Tamb ≤ Tmax
2
30
40
nA
Iib
Input bias current (2)
Tamb = 25°C
Tmin ≤ Tamb ≤ Tmax
20
150
200
nA
Avd
VCC+ = +15V, RL=2kΩ, Vo = 1.4V to 11.4V
Large signal voltage gain Tamb = 25°C
Tmin ≤ Tamb ≤ Tmax
SVR
Supply voltage rejection
ratio
RS ≤10kΩ
Tamb = 25°C
Tmin ≤ Tamb ≤ Tmax
Icc
Supply current, all Amp,
no load
Tamb = 25°C, VCC = +5V
Tmin ≤ Tamb ≤ Tmax, VCC = +30V
Vicm
Input common mode
voltage range
VCC= +30V (3)
Tamb = 25°C
Tmin ≤ Tamb ≤ Tmax
0
0
CMR
RS = 10kΩ
Common-mode rejection
Tamb = 25°C
ratio
Tmin ≤ Tamb ≤ Tmax
70
60
85
Isource
Output short-circuit
current
VCC = +15V, Vo = +2V, Vid = +1V
20
40
Isink
Output sink current
VO = 2V, VCC = +5V
VO = +0.2V, VCC = +15V
10
12
20
50
Output voltage swing
RL = 2kΩ
Tamb = 25°C
Tmin ≤ Tamb ≤ Tmax
0
0
High level output voltage
VCC + 30V
Tamb = +25°C, RL = 2kΩ
Tmin ≤ Tamb ≤ Tmax
Tamb = +25°C, RL = 10kΩ
Tmin ≤ Tamb ≤ Tmax
26
26
27
27
VOPP
VOH
VOL
Low level output voltage
RL = 10kΩ
Tamb = +25°C
Tmin ≤ Tamb ≤ Tmax
SR
Slew rate
VCC = 15V, Vi = 0.5 to 3V, RL = 2kΩ,
CL = 100pF, unity gain
Tmin ≤ Tamb ≤ Tmax
Gain bandwidth product
f = 100kHz, VCC = 30V,Vin = 10mV,
RL = 2kΩ, CL = 100pF
GBP
6/19
50
25
100
V/mV
65
65
100
dB
0.7
1.2
2
VCC+ -1.5
VCC+ -2
mA
V
dB
60
mA
mA
µA
VCC+ -1.5
VCC+ -2
V
V
27
28
5
20
20
mV
0.3
0.2
0.6
V/µs
0.7
1.1
MHz
LM2904W
Table 3.
Electrical characteristics
VCC+ = 5V, VCC- = Ground, VO = 1.4V, Tamb = 25°C (unless otherwise specified)
Symbol
Parameter
THD
Total harmonic distortion
DVio
Input offset voltage drift
7
30
µV/°C
DIio
Input offset current drift
10
300
pA/°C
VO1/VO2 Channel separation
1.
Conditions
(4)
+
f = 1kHz, AV = 20dB, RL = 2kΩ,
Vo = 2Vpp, CL = 100pF, Vcc = 30V
1kHz ≤ f ≤ 20kHz
Min.
Typ.
Max.
Unit
0.02
120
%
dB
+
VO = 1.4V, RS = 0Ω, 5V < VCC < 30V, 0V < Vic < 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 there is no change in the loading charge 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 VCC+ –1.5V, but either or both inputs can go to +32V without damage.
4. Due to the proximity of external components, ensure that stray capacitance between these external parts does not cause
coupling. Typically, this can be detected because this type of capacitance increases at higher frequencies.
7/19
Electrical characteristics
Figure 2.
LM2904W
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
0.1μF
VCC
VOLTAGE GAIN (dB)
-
100
VO
VI
VCC/2
+
80
VCC = 30V &
-55°C Tamb +125°C
60
40
20
VCC = +10 to + 15V &
-55°C Tamb +125°C
15
2k Ω
+
10
5
0
1.0
10
100
1k
10k
100k
1M
10M
1k
10k
Figure 4.
Voltage follower pulse response
Figure 5.
OUTPUT CHARACTERISTICS
10
OUTPUT
VOLTAGE (V)
4
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
0
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
Figure 6.
1M
Output characteristics
VOLAGE FOLLOWER PULSE RESPONSE
INPUT
VOLTAGE (V)
100k
FREQUENCY (Hz)
FREQUENCY (Hz)
OUTPUT VOLTAGE (mV)
VO
VI
+7V
0
8/19
+15V
-
OUTPUT SWING (Vpp)
120
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)
LM2904W
Electrical characteristics
Figure 8.
Input current
Figure 9.
Current limiting
CURRENT LIMITING (Note 1)
INPUT CURRENT (Note 1)
90
90
VI = 0 V
70
VCC = +30 V
60
50
VCC = +15 V
40
30
VCC = +5 V
20
-
80
OUTPUT CURRENT (mA)
INPUT CURRENT (mA)
80
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
VCC
10
SUPPLY CURRENT (mA)
INPUT VOLTAGE (V)
IO
70
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)
20
30
POSITIVE SUPPLY VOLTAGE (V)
Figure 12. Positive supply voltage
Figure 13. Positive supply voltage
100
160
INPUT CURRENT (nA)
R L = 20kΩ
VOLTAGE GAIN (dB)
10
120
R L = 2k Ω
80
40
0
10
20
30
40
POSITIVE SUPPLY VOLTAGE (V)
75
50
25
Tamb= +25°C
0
10
20
30
POSITIVE SUPPLY VOLTAGE (V)
9/19
Electrical characteristics
LM2904W
Figure 15. Gain bandwidth product
160
VOLTAGE GAIN (dB)
R L = 20k Ω
120
R L = 2k Ω
80
40
0
10
20
30
GAIN BANDWIDTH PRODUCT (MHz)
Figure 14. Positive supply voltage
1.5
1.35
1.2
1.05
0.9
0.75
0.6
0.3
0.15
TEMPERATURE (°C)
Figure 18. Phase margin vs capacitive load
Phase Margin at Vcc=15V and Vicm=7.5V
Vs. Iout and Capacitive load value
10/19
0
-55-35-15 5 25 45 65 85 105 125
TEMPERATURE (°C)
Figure 17. Common mode rejection ratio
COMMON MODE REJECTION RATIO (dB)
POWER SUPPLY REJECTION RATIO (dB)
115
110
SVR
105
100
95
90
85
80
75
70
65
60-55-35-15 5 25 45 65 85 105 125
15V
0.45
POSITIVE SUPPLY VOLTAGE (V)
Figure 16. Power supply rejection ratio
VCC =
115
110
105
100
95
90
85
80
75
70
65
60-55-35-15 5 25 45 65 85 105 125
TEMPERATURE (°C)
LM2904W
Electrical characteristics
Typical single-supply applications
Figure 19. AC coupled inverting amplifier
Rf
100kΩ
1/2
LM2904
eI ~
R2
VCC 100kΩ
R1
100kΩ
Rf
R1
(as shown AV = -10)
R1
10kΩ
CI
AV = -
Figure 20. AC coupled non-inverting amplifier
2VPP
0
eo
A V= 1 + R2
R1
(as shown A V = 11)
C1
0.1μF
Co
RB
6.2kΩ
R3
100kΩ
R2
1MΩ
Co
1/2
LM2904
CI
RL
10kΩ
RB
6.2kΩ
R3
1MΩ
eI ~
2VPP
0
eo
RL
10k Ω
R4
100kΩ
VCC
C1
10μF
C2
10μF
Figure 21. Non-inverting DC gain
Figure 22. DC summing amplifier
e1
100kΩ
A V = 1 + R2
R1
(As shown A V = 101)
10kΩ
+5V
100kΩ
e2
100kΩ
e3
100kΩ
1/2
LM2904
eO
100kΩ
e
O
R2
1M Ω
eO
(V)
1/2
LM2904
R1
10kΩ
R5
100kΩ
e4
0
100kΩ
eo = e1 + e2 - e3 - e4
where (e1 + e2) ≥ (e3 + e4)
to keep eo ≥ 0V
e I (mV)
Figure 23. High input Z, DC differential
amplifier
Figure 24. Using symmetrical amplifiers to
reduce input current
1/2
I
eI
R4
100kΩ
R2
100kΩ
R1
100kΩ
1/2
LM2904
IB
R3
100kΩ
+V1
+V2
I
eo
I B LM2904
2N 929
0.001μ F
1/2
LM2904
Vo
IB
If R1 = R5 and R3 = R4 = R6 = R7
eo = [ 1 + 2R1 ] (e2 - e1)
R2
As shown eo = 101 (e2 - e1)
IB
3MΩ
1.5MΩ
IB
1/2
LM2904
Input current compensation
11/19
Electrical characteristics
LM2904W
Figure 25. Low drift peak detector
Figure 26. Active bandpass filter
R1
100kΩ
IB
1/2
1/2
LM2904
eI
C
1μ F
ZI
2N 929
2IB
R
1M Ω
0.001μ F
IB
12/19
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
VCC
1/2
LM2904
Input current
compensation
R7
100kΩ
R8
100kΩ
Fo = 1kHz
Q = 50
Av = 100 (40dB)
C3
10μF
LM2904W
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.
13/19
Package mechanical data
4.1
LM2904W
SO-8 package
Dimensions
Ref.
Millimeters
Min.
Typ.
Inches
Max.
Min.
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
14/19
Typ.
8° (max.)
0.1
0.04
LM2904W
4.2
Package mechanical data
DIP8 package
Dimensions
Ref.
Millimeters
Min.
A
Typ.
Inches
Max.
Min.
3.3
Typ.
Max.
0.130
a1
0.7
B
1.39
1.65
0.055
0.065
B1
0.91
1.04
0.036
0.041
b
b1
0.28
0.5
0.38
0.020
0.5
D
0.015
0.20
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
15/19
Package mechanical data
4.3
LM2904W
TSSOP8 package
Dimensions
Ref.
Millimeters
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
1.00
0.65
K
0°
L
0.45
L1
16/19
Inches
0.60
1
0.006
0.039
0.041
0.0256
8°
0°
0.75
0.018
8°
0.024
0.039
0.030
LM2904W
5
Ordering information
Ordering information
Part number
Temperature
range
Package
Packing
Marking
LM2904WN
DIP8
Tube
LM2904W
LM2904WD/WDT
SO-8
Tube or tape & reel
2904W
TSSOP8
(Thin shrink outline package)
Tape & reel
2904W
SO-8 (automotive grade level)
Tube or tape & reel
2904WY
TSSOP8 (automotive grade level)
Tape & reel
K04WY
LM2904WPT
LM2904WYD/WYDT
LM2904WYPT
-40°C, +125°C
17/19
Revision history
6
LM2904W
Revision history
Table 4.
18/19
Document revision history
Date
Revision
Changes
1-Sep-2003
1
Initial release.
1-Jul-2005
2
PPAP references inserted in the datasheet see Section 5: Ordering
information on page 17.
ESD protection inserted in Table 1: Absolute maximum ratings on
page 4.
1-Oct-2005
3
Correction of error in AVD min. value see: Table 3. on page 6
1-Dec-2005
4
LM2904WYPT PPAP reference added in Section 5: Ordering
information on page 17.
Information added in Table 1: Absolute maximum ratings on page 4.
2-May-2006
5
Minimum value of Slew Rate at 25°C and in temperature added in
Table 3. on page 6.
29-Sep-2006
6
ESD tolerance for HBM model improved to 2kV in Table 3. on page 6.
Added Figure 18: Phase margin vs capacitive load on page 10.
LM2904W
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