LM2902
Datasheet
Low-power quad operational amplifiers
Features
SO14
TSSOP14
•
•
•
•
•
•
•
Wide gain bandwidth: 1.3 MHz
Input common-mode voltage range includes negative rail
Large voltage gain: 100 dB
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
Description
QFN16 3x3
QFN16 3x3 wettable flanks
This circuit consists of four independent, high-gain operational amplifiers (op amps)
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.
DS0506 - Rev 9 - August 2022
For further information contact your local STMicroelectronics sales office.
www.st.com
LM2902
Schematic diagram
1
Schematic diagram
Figure 1. Schematic diagram (1/4 LM2902)
V CC
6µA
4µA
100 µA
Q5
Q6
CC
Inverting
input
Q2
Q3
Q1
Q7
Q4
R SC
Q11
Non-inverting
input
Output
Q13
Q10
Q8
Q12
Q9
50 µA
GND
DS0506 - Rev 9
page 2/20
LM2902
Pinout information
2
Pinout information
Figure 2. Package pin connections (top view)
Output 1
1
Inverting input 1
2
-
Non-inverting input 1
3
+
V CC +
4
Non-inverting Input 2
5
+
Inverting input 2
6
-
Output 2
7
14
Output 4
-
13
Inverting input 4
+
12
Non-inverting input 4
11
V CC -
+
10
Non-inverting input 3
-
9
Inverting input 3
8
Output 3
IN1-
OUT1
OUT4
IN4-
SO14 and TSSOP14
16
15
14
13
IN1+ 1
12 IN4+
VCC+ 2
11 VCC-
NC(1)
NC 3
10 NC
IN2+ 4
6
7
8
IN2-
OUT2
OUT3
IN3-
9
5
IN3+
QFN16 3x3
1.
DS0506 - Rev 9
The exposed pads of the QFN16 3x3 can be connected to VCC- or left floating.
page 3/20
LM2902
Absolute maximum ratings and operating conditions
3
Absolute maximum ratings and operating conditions
Table 1. Absolute maximum ratings (AMR)
Symbol
Parameter
Value
VCC
Supply voltage (1)
± 16 to 32
Vid
Differential input voltage (2)
32
Vin
Input voltage
Output short-circuit duration
Unit
V
-0.3 to 32
(3)
Infinite
s
Tj
Maximum junction temperature
150
Tstg
Storage temperature range
-65 to 150
Input current : Vin driven negative (4)
5 in DC or 50 in AC (duty cycle = 10 %, T = 1 s)
Input current : Vin driven positive above AMR value (5)
0.4
Iin
Rthja
Rthjc
Thermal resistance junction-to-ambient
(6)
Thermal resistance junction-to-case
ESD
105
TSSOP14
100
QFN16 3x3
45
SO14
31
TSSOP14
32
QFN16 3x3
14
° C/W
370
MM: machine model (8)
CDM: charged device model
mA
SO14
HBM: human body model (7)
°C
150
(9)
V
1500
1. All voltage values, except the differential voltage are with respect to the network ground terminal.
2. Differential voltages are the non-inverting input terminal with respect to the inverting input terminal.
3. Short-circuits 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 an input diode clamp. In addition to this diode action, there is an 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 -0.3 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 µ A max (R = (Vin - 36 V)/400 µ A).
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.
Table 2. Operating conditions
Symbol
Parameter
VCC
Supply voltage
Vicm
Common mode input voltage range
Toper
Operating free-air temperature range
DS0506 - Rev 9
Value
Unit
3 to 30
(VCC +) - 1.5
Tmin ≤ Tamb ≤ Tmax
V
(VCC +) - 2
-40 to 125
°C
page 4/20
LM2902
Electrical characteristics
4
Electrical characteristics
Table 3. VCC + = 5 V, VCC - = Ground, VO = 1.4 V, Tamb = 25 °C (unless otherwise stated)
Symbol
Parameter
Vi o
Input offset voltage (1)
ΔVio/ΔT
Input offset voltage drift
Iio
Input offset current
DIio
Input offset current drift
Iib
Input bias current (2)
Avd
Large signal voltage gain
SVR
Supply voltage rejection ratio
ICC
Supply current, all op amps,
no load
CMR
Common-mode rejection
ratio
Io
Output short-circuit current
Isink
VOH
Output sink current
High-level output voltage
Test conditions
Min.
Tamb = 25 °C
Typ.
Max.
2
7
Tmin ≤ Tamb ≤ Tmax
9
Tamb = 25 °C
7
30
2
30
Tmin ≤ Tamb ≤ Tmax
40
Tamb = 25 °C
10
200
20
150
Tmin ≤ Tamb ≤ Tmax
300
VCC + = 15 V, RL = 2 kΩ, Vο = 1.4 V to 11.4 V, Tamb = 25 °C
50
VCC + = 15 V, RL = 2 kΩ, Vο = 1.4 V to 11.4 V, Tmin ≤ Tamb ≤ Tmax
25
RS ≤ 10 kΩ, Tamb = 25 °C
65
RS ≤ 10 kΩ, Tmin ≤ Tamb ≤ Tmax
65
mV
µV/°C
nA
pA/°C
nA
100
V/mV
110
dB
Tamb = 25 °C, VCC + = 5 V
0.7
1.2
Tamb = 25 °C, VCC + = 30 V
1.5
3
Tmin ≤ Tamb ≤ Tmax, VCC + = 5 V
0.8
1.2
Tmin ≤ Tamb ≤ Tmax, VCC + = 30 V
1.5
3
mA
RS ≤ 10 kΩ, Tamb = 25 °C
70
RS ≤ 10 kΩ, Tmin ≤ Tamb ≤ Tmax
60
Vid = 1 V, VCC + = 15 V, Vo = 2 V
20
40
Vid = -1 V, VCC + = 15 V, Vo = 2 V
10
20
Vid = -1 V, VCC + = 15 V, Vo = 0.2 V
12
50
VCC + = 30 V, RL = 2 kΩ, Tamb = 25 °C
26
27
VCC + = 30 V, RL = 2 kΩ, Tmin ≤ Tamb ≤ Tmax
26
VCC + = 30 V, RL = 10 kΩ, Tamb = 25 °C
27
VCC + = 30 V, RL = 10 kΩ, Tmin ≤ Tamb ≤ Tmax
27
VCC + = 5 V, RL = 2 kΩ, Tamb = 25 °C
3
VCC + = 5 V, RL = 2 kΩ, Tmin ≤ Tamb ≤ Tmax
3.5
RL = 10 kΩ, Tamb = 25 °C
Unit
80
dB
70
mA
µA
28
V
5
20
VOL
Low-level output voltage
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
%
en
Equivalent input noise
voltage
f = 1 kHz, RS = 100 Ω, VCC + = 30 V
40
nV/√Hz
DS0506 - Rev 9
RL = 10 kΩ, Tmin ≤ Tamb ≤ Tmax
20
mV
page 5/20
LM2902
Electrical characteristics
Symbol
Parameter
VO1/VO2 Channel separation
Test conditions
(3)
1 kHz ≤ f ≤ 20 kHz
Min.
Typ.
120
Max.
Unit
dB
1. 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 load on the input lines.
3. Due to the proximity of external components, ensure that stray capacitance does not cause coupling between these external parts. Typically,
this can be detected as this type of capacitance increases at higher frequencies.
DS0506 - Rev 9
page 6/20
LM2902
Electrical characteristic curves
5
Electrical characteristic curves
Figure 3. Input bias current vs. Tamb
Figure 4. Input voltage range
24
21
18
IB (nA)
15
12
9
6
3
0
-55 -35 -15
5
25 45
65
85 105 125
TEMPERATURE (°C)
Figure 5. Current limiting
Figure 6. Supply current
Figure 7. Gain bandwidth product
Figure 8. Voltage follower pulse response
4
OU TP UT
VO LT AG E (V)
GBP (MHz)
RL ≤ 2 kΩ
VCC = +15V
3
2
1
INPU T
VO LT AG E (V)
0
3
2
1
0
10
20
30
40
TIME (µs)
DS0506 - Rev 9
page 7/20
LM2902
Electrical characteristic curves
COMMON MODE R EJECTION RAT IO (dB)
Figure 9. Common-mode rejection ratio
Figure 10. Output characteristics (sink)
120
100
80
+7.5V
100Ω
60
40
-
100Ω
eI
eO
+
100kΩ
20
100kΩ
< 7.5V
0
100
10K
1K
1M
100K
FREQUENCY (Hz)
Figure 11. Open-loop frequency response
Figure 12. Voltage follower pulse response
140
500
0.1 µF
VOLTAGE G AIN (dB)
120
VCC
-
100
VI
VC C/2
80
VO
+
VC C = 30V &
-55°C Tam b +125 °C
60
40
20
VCC = + 10 to + 1 5V &
-55°C Tam b +125 °C
0
1.0
10
100
1k
10 k
100 k
1M
10M
OUTPUT VOLTAGE (mV)
10 MΩ
+
450
eO
-
el
50 pF
400
Inpu t
350
Output
300
Tam b = +25 °C
VCC = 3 0 V
250
0
1
2
3
4
5
6
7
8
TIME (µs)
FRE Q UENCY (Hz)
Figure 13. Large signal frequency response
Figure 14. Output characteristics (source)
20
100k Ω
OUTPUT S W ING (Vpp)
1k Ω
15
-
+15V
VO
VI
+7V
+
2kΩ
10
5
0
1k
10k
100 k
1M
FRE Q UENCY (Hz)
DS0506 - Rev 9
page 8/20
LM2902
Electrical characteristic curves
Figure 15. Input current
Figure 16. Voltage gain
VOLTAGE GAIN (dB)
16 0
R
L
= 20k Ω
R
L
= 2k Ω
12 0
80
40
0
10
20
30
P O S I T I V E S U P P LY V O LTA G E ( V )
Figure 17. Power supply and common-mode rejection
ratio
DS0506 - Rev 9
Figure 18. Large signal voltage gain
page 9/20
LM2902
Typical single-supply applications
6
Typical single-supply applications
Figure 19. AC coupled inverting amplifier
Rf
100 kΩ
Co
1/4
LM2902
A V = 1 + R2
R1
(as shown A V = 11)
Co
1/4
LM2902
CI
RL
10 kΩ
R3
1 MΩ
eI ~
2 VPP
0
eo
RB
6.2 kΩ
R3
100 kΩ
Vcc+
R2
1 MΩ
C1
0.1 µF
2VPP
0
eo
RB
6.2 kΩ
el ~
R1
100 kΩ
R2
AV=- R1
(as shown AV=-10)
R1
10 kΩ
Cl
Figure 20. AC coupled non-inverting amplifier
RL
10 kΩ
R4
100 kΩ
R2
100 kΩ
VCC
C1
10 µF
C2
10 µF
Figure 21. Non-inverting DC gain
eo
1/4
LM2902
e1
+5 V
e2
100 kΩ
e3
100 kΩ
100 kΩ
0
Figure 24. High input Z adjustable gain DC
instrumentation amplifier
R1
100 kΩ
R1
100 kΩ
C1
330 pF
1/4
LM2902
R5
470 kΩ
C2
330 pF
R3
10 kΩ
R2
2 kΩ
DS0506 - Rev 9
R3
100 kΩ
R4
100 kΩ
1/4
LM2902
Gain adjust
eO
R5
100 kΩ
eO
1/4
LM2902
R7
100kΩ
R8
100 kΩ
e1
1/4
LM2902
1/4
LM2902
R6
470 kΩ
Fo = 1 kHz
Q = 50
Av = 100 (40 dB)
100 kΩ
e0 = e1 + e2 - e3 - e4
where (e1 + e2) ≥ (e3 + e4)
to keep e0 ≥ 0 V
e I (mV)
Figure 23. Active bandpass filter
R4
10 MΩ
eO
1/4
100 kΩ LM2902
e4
e1
100 kΩ
eo (V)
R2
1 MΩ
R1
10 kΩ
Figure 22. DC summing amplifier
A V = 1 + R2
R1
(as shown A V = 101)
10 k Ω
R5
100 kΩ
C3
10µF
1/4
LM2902
VCC
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)
page 10/20
LM2902
Typical single-supply applications
Figure 25. High input Z, DC differential amplifier
Figure 26. Low drift peak detector
IB
R4
100 kΩ
R2
100 kΩ
1/4
I B LM2902
1/4
LM2902
R1
100 kΩ
1/4
LM2902
+V 1
R3
100 kΩ
eI
C
1 µF
*
ZI
1/4
LM2902
2I B
+V 2
R
1 MΩ
eo = [ 1 + R4 ] (e2 - e1)
R3
2I B
2N 92 9
Vo
As shown eo = (e2 - e1)
eo
Zo
0.00 1 µF
IB
3R
3 MΩ
IB
1/4
LM2902
Input current
compensation
* Polycarbonate or polyethylene
Figure 27. Using symmetrical amplifiers to reduce input current (general concept)
I I
eI
IB
1/4
I B LM2902
eo
2N 929
0.001µF
IB
IB
3 MΩ
IB
1/4
LM2902
Aux. amplifier for input
current compensation
1.5 MΩ
DS0506 - Rev 9
page 11/20
LM2902
Package information
7
Package information
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.
7.1
SO14 package information
Figure 28. SO14 package outline
Table 4. SO14 package mechanical data
Dimensions
Millimeters
Ref.
Min.
Typ.
Inches
Max.
Min.
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
DS0506 - Rev 9
Typ.
8° (max.)
0.10
0.004
page 12/20
LM2902
TSSOP14 package information
7.2
TSSOP14 package information
Figure 29. TSSOP14 package outline
aaa
Table 5. TSSOP14 package mechanical data
Dimensions
Millimeters
Ref.
Min.
Typ.
A
Max.
Min.
Typ.
1.20
A1
0.05
A2
0.80
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
4.90
5.00
5.10
0.193
0.197
0.201
E
6.20
6.40
6.60
0.244
0.252
0.260
E1
4.30
4.40
4.50
0.169
0.173
0.176
e
L
k
aaa
1.00
0.65
0.45
L1
DS0506 - Rev 9
Inches
0.60
0.0256
0.75
0.018
1.00
0°
0.024
0.030
0.039
8°
0.10
0°
8°
0.004
page 13/20
LM2902
QFN16 3x3 package information
7.3
QFN16 3x3 package information
Figure 30. QFN16 3x3 package outline
DS0506 - Rev 9
page 14/20
LM2902
QFN16 3x3 package information
Table 6. QFN16 3x3 mechanical data
Dimensions
Millimeters
Ref.
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
0.122
0.071
0.118
0.122
0.071
0.020
0.50
0.012
0.020
Figure 31. QFN16 3x3 recommended footprint
DS0506 - Rev 9
page 15/20
LM2902
QFN16 3x3 wettable flank package information
7.4
QFN16 3x3 wettable flank package information
Figure 32. QFN16 3x3 mm wettable flank drawing outline
DS0506 - Rev 9
page 16/20
LM2902
QFN16 3x3 wettable flank package information
Table 7. QFN16 3x3 wettable flank mechanical data
Dimensions
Millimeters
Ref.
Inches
Min.
Typ.
Max.
Min.
Typ.
Max.
A
0,90
0,95
1,00
0,035
0,037
0,039
A1
0,00
0,05
0,000
0,002
A2
0,75
0,030
A3
0,20
0,008
b
0,20
0,25
0,30
0,008
0,010
D
3,00
0,118
E
3,00
0,118
e
0,50
0,020
0,012
D2
1,56
1,66
1,76
0,061
0,065
0,069
E2
1,56
1,66
1,76
0,061
0,065
0,069
K
L
0,27
0,30
0,40
0,011
0,50
0,012
0,016
0,020
Figure 33. QFN16 3x3 wettable flank recommended footprint
DS0506 - Rev 9
page 17/20
LM2902
Ordering information
8
Ordering information
Table 8. Order codes
Order code
Temperature range
LM2902D
LM2902DT
LM2902PT
Packing
SO14
Tube or tape and reel
Marking
2902
TSSOP14
LM2902Q4T
LM2902YQ5T
LM2902YDT
Package
(1)
LM2902YPT (1)
-40 ° C to 125 ° C
QFN16 3x3
QFN16 3x3 wettable flank
SO14, automotive grade level
TSSOP14, automotive grade level
K5H
Tape and reel
K218
2902Y
1. Qualified and characterized according to AEC Q100 and Q003 or equivalent, advanced screening according to AEC Q001 & Q002 or
equivalent.
DS0506 - Rev 9
page 18/20
LM2902
Revision history
Table 9. Document revision history
Date
Revision
30-Nov-2001
1
01-Jul-2005
2
Changes
Initial release.
PPAP references inserted in the datasheet, see Table 3: Order codes.
ESD protection inserted in Table 1 on page 4.
An error in the device description was corrected on page 1.
31-Oct-2005
3
PPAP reference inserted in the datasheet see Table 3: Order codes.
Minor grammatical and formatting changes throughout.
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).
18-Jun-2007
4
Table 2: Operating conditions added.
Electrical characteristics figure captions updated.
Section 6: Package information updated.
Table 3: Order codes moved to end of document.
Removed power dissipation parameter from AMR table and added maximum junction temperature.
18-Dec-2007
5
Updated footnotes for automotive grade order codes.
Updated format of package information.
Added AMR values for input current in Table 1 on page 4.
16-Feb-2012
6
Added QFN16 3 x 3 mm package information in Chapter 7: Ordering information.
Removed LM2902YD order code from Table 3 and changed status of LM2902YPT order code.
Small text/layout changes in Features and Description.
Updated Figure 2: Pin connections (top view).
29-Jan-2013
7
Table 3: VCC+ = 5V, VCC- = Ground, Vo = 1.4V, Tamb = 25° C (unless otherwise specified): DVio replaced by
DVio/DT.
Replaced SO-14 package silhouette, package mechanical drawing (Figure 29) and package mechanical data
(Table 5).
Removed DIP package.
11-Jan-2017
8
Figure 2. Schematic diagram (1/4 LM2902): removed two diodes
Table 1. Absolute maximum ratings (AMR): updated value of VCC
Updated TSSOP14 package for L and aaa parameters
31-Aug-2022
DS0506 - Rev 9
9
Added Section 7.4 QFN16 3x3 wettable flank package information
Updated Section 8 Ordering information
page 19/20
LM2902
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DS0506 - Rev 9
page 20/20
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