LM2902
Low-power quad operational amplifier
Datasheet − production data
Features
■
Wide gain bandwidth: 1.3 MHz
■
Input common-mode voltage range includes
negative rail
■
Large voltage gain: 100 dB
■
Very low supply current per amplifier: 375 µA
■
Low input bias current: 20 nA
■
Low input offset current: 2 nA
■
Wide power supply range:
– Single supply: +3 V to +30 V
– Dual supplies: ±1.5 V to ±15 V
N
DIP14
(Plastic package)
D
SO-14
(Plastic micropackage)
Description
This circuit consists of four independent, high gain
operational amplifiers which employ internal
frequency compensation and are specifically
designed for automotive and industrial control
systems.
The device operates 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 from
the power supply voltage magnitude.
P
TSSOP14
(Thin shrink small outline package)
Q4
QFN16 3x3
(Plastic micropackage)
January 2013
This is information on a product in full production.
Doc ID 2469 Rev 7
1/21
www.st.com
21
Contents
LM2902
Contents
1
Schematic diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2
Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3
Operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
4
Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
5
Typical single-supply applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
6
ECOPACK®
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
6.1
DIP14 package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
6.2
SO-14 package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
6.3
TSSOP14 package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
6.4
QFN16 3 x 3 package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . 17
7
Ordering information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
8
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
2/21
Doc ID 2469 Rev 7
LM2902
Schematic diagram
Figure 1.
Schematic diagram (1/4 LM2902)
Figure 2.
Pin connections (top view)
Output 1 1
14
Output 4
Inverting Input 1 2
-
-
13
Inverting Input 4
Non-inverting Input 1 3
+
+
12
Non-invertin g Input 4
11
V CC -
VCC + 4
9
Inverting Input 3
Output 2
7
8
Output 3
,1
9&&
,1
-
287
-
6
287
Inverting Input 2
Non-invertin g Input 3
,1
10
+
+
5
Non-inverting Input 2
,1
9&&
1&
,1
,1
,1
,1
287
1&
287
1&
,1
1
Schematic diagram
1. The exposed pads of the QFN16 3x3 can be connected to VCC- or left floating.
Doc ID 2469 Rev 7
3/21
Absolute maximum ratings
LM2902
2
Absolute maximum ratings
Table 1.
Absolute maximum ratings (AMR)
Symbol
VCC
Parameter
Supply voltage(1)
Differential input voltage
Vin
Input voltage
+32
Tstg
V
-0.3 to +32
Output short-circuit duration(3)
Infinite
s
Maximum junction temperature
150
°C
Input current(4): Vin driven negative
Iin
Unit
±16 to 33
(2)
Vid
Tj
Value
5 in DC or 50 in AC
(duty cycle = 10 %, T = 1 s)
Input current(5): Vin driven positive above AMR
value
Storage temperature range
mA
0.4
-65 to +150
°C
ambient(6)
Rthja
Thermal resistance junction to
DIP14
SO-14
TSSOP14
QFN16 3x3
Rthjc
Thermal resistance junction to case(6)
DIP14
SO-14
TSSOP14
QFN16 3x3
33
31
32
14
HBM: human body model(7)
370
V
150
V
1500
V
ESD
MM: machine
80
105
100
45
model(8)
CDM: charged device
model(9)
°C/W
1. All voltage values, except differential voltage are with respect to network ground terminal.
2. Differential voltages are the non-inverting input terminal with respect to the inverting input terminal.
3. Short-circuit from the output to VCC+ can cause excessive heating and eventual destruction. The maximum output current
is approximately 20 mA, independent of the magnitude of VCC+.
4. 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 clamp. In addition to this
diode action, there is NPN parasitic action on the IC chip. This transistor action can cause the output voltages of the Opamps 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 -0.3 V.
5. The junction base/substrate of the input PNP transistor polarized in reverse must be protected by a resistor in series with
the inputs to limit the input current to 400 µA max (R = (Vin - 36 V)/400 µA).
6. Rthja/c are typical values.
7. Human body model: a 100 pF capacitor is charged to the specified voltage, then discharged through a 1.5 kΩ resistor
between two pins of the device. This is done for all couples of connected pin combinations while the other pins are floating.
8. Machine model: a 200 pF capacitor is charged to the specified voltage, then discharged directly between two pins of the
device with no external series resistor (internal resistor < 5 Ω). This is done for all couples of connected pin combinations
while the other pins are floating.
9. Charged device model: all pins and the package are charged together to the specified voltage and then discharged directly
to the ground through only one pin. This is done for all pins.
4/21
Doc ID 2469 Rev 7
LM2902
Operating conditions
3
Operating conditions
Table 2.
Operating conditions
Symbol
Parameter
VCC
Supply voltage
Vicm
Common mode input voltage range
Tmin ≤ Tamb ≤ Tmax
Toper
Operating free-air temperature range
Value
Unit
3 to 30
Doc ID 2469 Rev 7
VCC+ - 1.5
VCC+ -2
V
-40 to +125
°C
5/21
Electrical characteristics
LM2902
4
Electrical characteristics
Table 3.
VCC+ = 5V, VCC- = Ground, Vo = 1.4V, Tamb = 25°C
(unless otherwise specified)
Symbol
Parameter
Min.
Typ.
Max.
Unit
2
7
9
mV
7
30
µV/°C
2
30
40
nA
10
200
pA/°C
20
150
300
nA
Input offset voltage(1)
Vio
ΔVio/ΔT
Tmin ≤ Tamb ≤ Tmax
Input offset voltage drift
Input offset current
Iio
DIio
Tmin ≤ Tamb ≤ Tmax
Input offset current drift
Input bias
Iib
Avd
current(2)
Tmin ≤ Tamb ≤ Tmax
Large signal voltage gain (VCC+ = +15 V, RL = 2 kΩ,
Vo = 1.4 V to 11.4 V)
Tmin ≤ Tamb ≤ Tmax
50
25
100
65
65
110
V/mV
Supply voltage rejection ratio (RS ≤10 kΩ)
SVR
Tmin ≤ Tamb ≤ Tmax
Icc
Supply current, all amps, no load
VCC+ = +5 V
VCC+ = +30 V
Tmin ≤ Tamb ≤ Tmax
VCC+ = +5 V
VCC+ = +30 V
dB
0.7
1.5
1.2
3
0.8
1.5
1.2
3
mA
Common-mode rejection ratio (RS ≤ 10 kΩ)
CMR
Tmin ≤ Tamb ≤ Tmax
IO
Output short-circuit current (Vid = +1 V, VCC+ = +15 V,
Vo = +2 V)
70
60
80
20
40
Isink
Output sink current (Vid = -1 V)
VCC+ = +15 V, Vo = +2 V
VCC+ = +15 V, Vo = +0.2 V
10
12
20
50
26
26
27
27
3
3.5
27
VOH
High level output voltage (VCC+ = +30 V)
RL = 2 kΩ
Tmin ≤ Tamb ≤ Tmax
RL = 10 kΩ
Tmin ≤ Tamb ≤ Tmax
VCC+ = +5 V, RL = 2 kΩ
Tmin ≤ Tamb ≤ Tmax
6/21
Doc ID 2469 Rev 7
28
dB
70
mA
mA
µA
V
LM2902
Table 3.
Electrical characteristics
VCC+ = 5V, VCC- = Ground, Vo = 1.4V, Tamb = 25°C
(unless otherwise specified) (continued)
Symbol
VOL
Min.
Typ.
Max.
Unit
5
20
20
mV
Low level output voltage (RL = 10 kΩ)
Tmin ≤ Tamb ≤ Tmax
SR
Slew rate (VCC+ = 15 V, Vin = 0.5 to 3 V, RL = 2 kΩ,
CL = 100 pF, unity gain)
0.4
V/µs
GBP
Gain bandwidth product (VCC+ = 30 V, Vin = 10 mV,
RL = 2 kΩ, CL = 100 pF)
1.3
MHz
THD
Total harmonic distortion (f = 1 kHz, AV = 20 dB,
RL = 2 kΩ, Vo = 2 Vpp, CL = 100 pF, VCC+ = 30 V)
0.015
%
Equivalent input noise voltage (f = 1 kHz, RS = 100 Ω,
VCC+ = 30 V)
40
nV
-----------Hz
Channel separation(3) (1 kHz ≤ f ≤ 20 kHz)
120
dB
en
VO1/VO2
1.
Parameter
+
+
VO = 1.4 V, RS = 0 Ω, 5 V < VCC < 30 V, 0 V < Vic < VCC - 1.5 V.
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. Due to the proximity of external components ensure stray capacitance does not cause coupling between these external
parts. This typically can be detected as this type of capacitance increases at higher frequencies.
Doc ID 2469 Rev 7
7/21
Electrical characteristics
LM2902
Figure 3.
Input bias current vs. Tamb
Figure 4.
Input voltage range
Figure 5.
Current limiting
Figure 6.
Supply current
Figure 7.
Gain bandwidth product
Figure 8.
Voltage follower pulse response
OUTPUT
VOLTAGE (V)
4
RL 2 k Ω
VCC = +15V
3
2
1
0
INPUT
VOLTAGE (V)
3
8/21
Doc ID 2469 Rev 7
2
1
0
10
20
TIME (μ s)
30
40
LM2902
Electrical characteristics
COMMON MODE REJECTION RATIO (dB)
Figure 9.
Common mode rejection ratio
Figure 10. Output characteristics (sink)
120
100
80
+7.5V
100kΩ
100 Ω
60
-
40
100 Ω
eI
eO
+
100kΩ
20
+7.5V
0
100
10K
1K
1M
100K
FREQUENCY (Hz)
Figure 11.
Open-loop frequency response
Figure 12. Voltage follower pulse response
(
140
VCC
VOLTAGE GAIN (dB)
-
100
VI
VCC/2
OUTPUT VOLTAGE (mV)
10M Ω
0.1μF
120
VO
+
80
VCC = 30V &
-55°C Tamb
60
+125°C
40
20
)
500
VCC = +10 to + 15V &
-55°C Tamb +125°C
0
+
450
eO
el
-
50pF
400
Input
350
Output
300
Tamb = +25°C
VCC = 30 V
250
1.0
10
100
1k
10k
100k
1M
10M
0
1
2
3
4
5
6
7
8
TIME (μs)
FREQUENCY (Hz)
Figure 13. Large signal frequency response
Figure 14. Output characteristics (source)
20
100k Ω
OUTPUT SWING (Vpp)
1k Ω
-
15
+15V
VO
VI
+7V
+
2k Ω
10
5
0
1k
10k
100k
1M
FREQUENCY (Hz)
Doc ID 2469 Rev 7
9/21
Electrical characteristics
LM2902
Figure 15. Input current
Figure 16. Voltage gain
160
VOLTAGE GAIN (dB)
R L = 20k Ω
120
R L = 2k Ω
80
40
0
10
20
30
POSITIVE SUPPLY VOLTAGE (V)
Figure 17. Power supply and common mode
rejection ratio
10/21
Figure 18. Large signal voltage gain
Doc ID 2469 Rev 7
LM2902
Typical single-supply applications
5
Typical single-supply applications
Figure 19. AC coupled inverting amplifier
Rf
100 kΩ
CI
AV = -
R1
100 kΩ
Rf
R1
(as shown A V = -10)
R1
10 kΩ
R2
VCC 100 kΩ
2VPP
0
eo
RB
6.2 kΩ
R3
100 kΩ
A V = 1 + R2
R1
(as shown AV = 11)
Co
1/4
LM2902
CI
RL
10 kΩ
R3
1 MΩ
eI ~
RL
10 kΩ
R4
100 kΩ
VCC
C2
10 μF
Figure 21. Non-inverting DC gain
eO
1/4
LM2902
e1
100 kΩ
+5 V
100 kΩ
e2
100 kΩ
e3
100 kΩ
eO (V)
R2
1 MΩ
R5
100 kΩ
Figure 22. DC summing amplifier
A V = 1 + R2
R1
(As shown A V = 101)
10 kΩ
1/4
LM2902
eO
100 kΩ
e4
0
100 kΩ
eo = e1 + e2 - e3 - e4
where (e1 + e2) ≥ (e3 + e4)
to keep eo ≥ 0 V
e I (mV)
Figure 23. Active bandpass filter
Figure 24. High input Z adjustable gain DC
instrumentation amplifier
R1
100 kΩ
R1
100 kΩ
C1
330 pF
1/4
LM2902
e1
2 VPP
0
eo
RB
6.2 kΩ
C1
10 μF
R1
10 kΩ
R2
1 MΩ
C1
0.1 μF
Co
1/4
LM2902
eI ~
Figure 20. AC coupled non-inverting amplifier
R5
470 kΩ
R4
10 MΩ
e1
1/4
LM2902
R2
2 kΩ
C2
330 pF
R3
10 kΩ
1/4
LM2902
R6
470 kΩ
R7
100 kΩ
Fo = 1 kHz
Q = 50
Av = 100 (40 dB)
C3
10 μF
eO
R5
100 kΩ
1/4
LM2902
VCC
R8
100 kΩ
R4
100 kΩ
1/4
LM2902
Gain adjust
eO
1/4
LM2902
R3
100 kΩ
R6
100 kΩ
R7
100 kΩ
e2
If R1 = R5 and R3 = R4 = R6 = R7
eo = [ 1 + 2R1 ] (e2 - e1)
R2
As shown eo = 101 (e2 - e1)
Doc ID 2469 Rev 7
11/21
Typical single-supply applications
LM2902
Figure 25. High input Z, DC differential
amplifier
Figure 26. Low drift peak detector
IB
R4
100 kΩ
R2
100 kΩ
1/4
R1
100 kΩ
1/4
LM2902
eI
R3
100 kΩ
+V1
+V2
C
*
1 μF
ZI
1/4
LM2902
2I B
R
1 MΩ
As shown eo = (e2 - e1)
Figure 27. Using symmetrical amplifiers to
reduce input current (general
concept)
1/4
eI
IB
I
eo
I B LM2902
2N 929
0.001 μF
IB
IB
3 MΩ
IB
1/4
LM2902
Aux. amplifier for input
current compensation
1.5 MΩ
12/21
0.001 μF
IB
3R
3 MΩ
IB
* Polycarbonate or polyethylene
I
Zo
2I B
2N 929
Vo
eo = [ 1 + R4 ] (e2 - e1)
R3
Doc ID 2469 Rev 7
eo
I B LM2902
1/4
LM2902
1/4
LM2902
Input current
compensation
ECOPACK®
LM2902
6
ECOPACK®
In order to meet environmental requirements, ST offers these devices in different grades of
ECOPACK® packages, depending on their level of environmental compliance. ECOPACK®
specifications, grade definitions and product status are available at: www.st.com.
ECOPACK® is an ST trademark.
Doc ID 2469 Rev 7
13/21
ECOPACK®
6.1
LM2902
DIP14 package information
Figure 28. DIP14 package mechanical drawing
Table 4.
DIP14 package mechanical data
Millimeters
Inches
Ref.
Min.
a1
0.51
B
1.39
Typ.
Min.
Typ.
Max.
0.020
1.65
0.055
0.065
b
0.5
0.020
b1
0.25
0.010
D
20
0.787
E
8.5
0.335
e
2.54
0.100
e3
15.24
0.600
F
7.1
0.280
I
5.1
0.201
L
Z
14/21
Max.
3.3
1.27
0.130
2.54
Doc ID 2469 Rev 7
0.050
0.100
ECOPACK®
LM2902
6.2
SO-14 package information
Figure 29. SO-14 package mechanical drawing
Table 5.
SO-14 package mechanical data
Dimensions
Millimeters
Inches
Ref.
Min.
Typ.
Max.
Min.
Typ.
Max.
A
1.35
1.75
0.05
0.068
A1
0.10
0.25
0.004
0.009
A2
1.10
1.65
0.04
0.06
B
0.33
0.51
0.01
0.02
C
0.19
0.25
0.007
0.009
D
8.55
8.75
0.33
0.34
E
3.80
4.0
0.15
0.15
e
1.27
0.05
H
5.80
6.20
0.22
0.24
h
0.25
0.50
0.009
0.02
L
0.40
1.27
0.015
0.05
k
ddd
8° (max.)
0.10
Doc ID 2469 Rev 7
0.004
15/21
ECOPACK®
6.3
LM2902
TSSOP14 package information
Figure 30. TSSOP14 package mechanical drawing
A
A2
A1
K
e
b
L
c
E
D
E1
PIN 1 IDENTIFICATION
1
Table 6.
TSSOP14 package mechanical data
Dimensions
Ref.
Millimeters
Min.
Typ.
A
Max.
Min.
Typ.
1.2
A1
0.05
A2
0.8
b
Max.
0.047
0.15
0.002
0.004
0.006
1.05
0.031
0.039
0.041
0.19
0.30
0.007
0.012
c
0.09
0.20
0.004
0.0089
D
4.9
5
5.1
0.193
0.197
0.201
E
6.2
6.4
6.6
0.244
0.252
0.260
E1
4.3
4.4
4.48
0.169
0.173
0.176
e
16/21
Inches
1
0.65 BSC
K
0°
L1
0.45
0.60
0.0256 BSC
8°
0°
0.75
0.018
Doc ID 2469 Rev 7
8°
0.024
0.030
ECOPACK®
LM2902
6.4
QFN16 3 x 3 package mechanical data
Figure 31. QFN16 3 x 3 mm package mechanical drawing
*$06&%
Doc ID 2469 Rev 7
17/21
ECOPACK®
LM2902
Table 7.
QFN16 3 x 3 mm package mechanical data (pitch 0.5 mm)
Dimensions
Ref.
Millimeters
Inches
Min.
Typ.
Max.
Min.
Typ.
Max.
A
0.80
0.90
1.00
0.031
0.035
0.039
A1
0
0.05
0
A3
0.20
b
0.18
D
2.90
D2
1.50
E
2.90
E2
1.50
e
L
3.00
3.00
0.008
0.30
0.007
3.10
0.114
1.80
0.059
3.10
0.114
1.80
0.059
0.50
0.30
0.002
0.012
0.118
0.071
0.118
0.122
0.071
0.020
0.50
0.012
0.020
Figure 32. QFN16 3 x 3 mm footprint recommendation
*$06
18/21
0.122
Doc ID 2469 Rev 7
LM2902
Ordering information
7
Ordering information
Table 8.
Order codes
Order code
Package
Packing
Marking
LM2902N
DIP14
Tube
LM2902N
LM2902D
LM2902DT
SO-14
Tube or
tape & reel
2902
LM2902PT
TSSOP14
LM2902Q4T
Temperature range
-40°C, +125°C
QFN16 3x3
LM2902YDT(1)
SO-14
(Automotive grade level)
LM2902YPT(1)
TSSOP14
(Automotive grade level)
K5H
Tape & reel
2902Y
1. Qualified and characterized according to AEC Q100 and Q003 or equivalent, advanced screening according to AEC Q001
& Q 002 or equivalent.
Doc ID 2469 Rev 7
19/21
Revision history
LM2902
8
Revision history
Table 9.
Document revision history
Date
Revision
30-Nov-2001
1
Initial release.
01-Jul-2005
2
PPAP references inserted in the datasheet, see Table 8: Order codes.
ESD protection inserted in Table 1 on page 4.
31-Oct-2005
3
An error in the device description was corrected on page 1.
PPAP reference inserted in the datasheet see Table 8: Order codes.
Minor grammatical and formatting changes throughout.
4
Values for thermal resistance junction to ambient and ESD HBM corrected in
Table 1: Absolute maximum ratings (AMR).
Values for thermal resistance junction to case added in Table 1: Absolute
maximum ratings (AMR).
Table 2: Operating conditions added.
Electrical characteristics figure captions updated.
Section 6: Package information updated.
Table 8: Order codes moved to end of document.
5
Removed power dissipation parameter from AMR table and added maximum
junction temperature.
Updated footnotes for automotive grade order codes.
Updated format of package information.
6
Added AMR values for input current in Table 1 on page 4.
Added QFN16 3 x 3 mm package information in Chapter 7: Ordering
information.
Removed LM2902YD order code from Table 8 and changed status of
LM2902YPT order code.
7
Small text/layout changes in Features and Description.
Updated Figure 2: Pin connections (top view).
Table 3: VCC+ = 5V, VCC- = Ground, Vo = 1.4V, Tamb = 25°C (unless
otherwise specified): DVio replaced by ΔVio/ΔT.
Replaced SO-14 package silhouette, package mechanical drawing (Figure 29)
and package mechanical data (Table 5).
18-Jun-2007
18-Dec-2007
16-Feb-2012
29-Jan-2013
20/21
Changes
Doc ID 2469 Rev 7
LM2902
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