This device consists of two independent lowpower voltage comparators designed specifically
to operate from a single supply over a wide range
of voltages. Operation from split power supplies is
also possible.
The input common-mode voltage range includes
negative rail even though operated from a single
power supply voltage.
All pins are protected against electrostatic
discharge up to 2
kV. Consequently, the input
voltages must not exceed the V
magnitudes.
November 2012Doc ID 022662 Rev 21/15
This is information on a product in full production.
Absolute maximum ratings and operating conditionsLM2903W
2 Absolute maximum ratings and operating conditions
Table 1.Absolute maximum ratings
SymbolParameterValueUnit
V
CC
V
id
V
in
V
out
R
thja
R
thjc
T
j
T
stg
ESD
1. Short-circuits from the output to V
maximum output current is approximately 20 mA and is independent of the V
2. Short-circuits can cause excessive heating and destructive dissipation. Values are typical and for a fourlayer PCB.
3. 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.
4. 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.
5. 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
Supply voltage±18 or 36V
Differential input voltage
Input voltage
V
CC
-
-0.3 to V
+
+0.3V
CC
Output voltage36V
Output short-circuit to ground
Thermal resistance junction to ambient
SO-8
TSSOP8
Thermal resistance junction to case
SO-8
TSSOP8
(1)
(2)
(2)
Infinite
125
120
40
37
°C/W
°C/W
Maximum junction temperature+150°C
Storage temperature range-65 to +150°C
Human body model (HBM)
Machine model (MM)
(4)
CDM: charged device model
+
can cause excessive heating and possible destruction. The
CC
(3)
(5)
2000V
200V
1500V
+
magnitude.
CC
SymbolParameterValueUnit
V
T
icm
oper
Common mode input voltage range
T
≤ T
amb
≤ T
max
min
Operating free-air temperature range-40 to +125°C
4/15Doc ID 022662 Rev 2
0 to V
0 to V
CC
CC
+
-1.5
+
-2
V
Page 5
LM2903WElectrical characteristics
3 Electrical characteristics
Table 3.V
CC
+
= 5 V, V
SymbolParameterTest conditionsMin.Typ.Max.Unit
-
= GND, T
CC
= 25°C (unless otherwise specified)
amb
17
15
550
150
25250
400
0.4
1
V
1
2.5
CC
+
250400
700
0.1
1
1.3µs
5001ns
(2)
(1)
T
≤ T
min
T
≤ T
min
T
≤ T
min
V
= 5 V, no load
CC
VCC = 30 V, no load
(3)
V
= -1 V, I
id
≤ T
T
min
V
= Vo = 30 V, Vid = 1 V
CC
≤ T
T
min
(4)
RL = 5.1 kΩ to V
V
= +1.4 V, RL = 5.1 kΩ to V
(5)
ref
Output signal at 50 % of final value
Output signal at 95 % of final value
CC
≤ T
amb
max
≤ T
amb
max
≤ T
amb
max
= 4 mA
sink
≤ T
amb
max
≤ T
amb
max
+
CC
+
CC
+
from 5 V to 30 V, and over the full input common-mode range
V
Input offset voltage
io
I
Input offset current
io
I
Input bias current
ib
Large signal voltage gainVCC = 15 V, RL = 15 kΩ, Vo = 1 to 11 V25200V/mV
A
vd
I
Supply current (all comparators)
CC
V
Differential input voltage
id
V
I
1. At output switch point, VO ≈ 1.4 V, RS = 0 Ω with V
2. The direction of the input current is from the IC due to the PNP input stage. This current is essentially constant,
3. Positive excursions of input voltage may exceed the power supply level. As long as the other voltage remains within the
4. The response time specified is for a 100 mV input step with 5 mV overdrive.
5. Maximum values are guaranteed by design and evaluation.
Low level output voltage
OL
I
High level output current
OH
Output sink current Vid = -1 V, Vo = 1.5 V616mA
sink
t
Small signal response time
res
Large signal response time
t
rel
TTL input
(0 V to V
independent of the state of the output, so no loading charge exists on the reference of input lines.
common-mode range, the comparator provides a proper output state. The low input voltage state must not be less than
–0.3 V (or 0.3 V below the negative power supply, if used).
CC
+
–1.5 V).
mV
nA
nA
mA
V
mV
nA
µA
µs
Doc ID 022662 Rev 25/15
Page 6
Electrical characteristicsLM2903W
Figure 2.Supply current vs. supply voltageFigure 3.Input current vs. supply voltage
Figure 4.Output saturation voltage vs.
output current
Figure 5.Response time for various input
overdrives - negative transition
Figure 6.Response time for various input
overdrives - positive transition
6/15Doc ID 022662 Rev 2
Page 7
LM2903WTypical application schematics
5 V
100 kΩ
&
1/ 2
LM2903
+V
(ref)
-V
(ref)
5 V
10 kΩ
+V
(ref)
&
&
1/ 2
LM2903
-V
(ref)
5 V
15 kΩ
0.5 μF
100 kΩ
1 kΩ
~
2N 2222
(eo = 0 V for el = 0 V)
1/ 2
LM2903
e
o
e
l
AV = 100
4 Typical application schematics
Figure 7.Basic comparatorFigure 8.Driving CMOS
V
= 5 V
CC
15 kΩ
+V
-V
(ref)
(ref)
1/2
LM2903
V
O
Figure 9.Driving TTLFigure 10. Low frequency op-amp
5 V
15 k
1/2
~
e
LM2903
l
Ω
e
o
100 kΩ
1 kΩ
AV = 100
Figure 11. Low frequency op-ampFigure 12. Transducer amplifier
Magnetic pick-up
10 kΩ
Doc ID 022662 Rev 27/15
10 kΩ
1/ 2
LM2903
20 MΩ
5 V
0.5 μF
3 kΩ
e
o
Page 8
Typical application schematicsLM2903W
e
l
~
2N 2222
5 V
e
o
R1
100 kΩ
1 kΩ
5 V
1 MΩ
100 kΩ
1 MΩ
Offset adjust
R
S
R
1
15 kΩ
0.5μF
R
2
1/ 2
LM2903
100 kΩ
10 kΩ
e
l
20 MΩ
5 V
1N4148
5.1 kΩ
5.1 kΩ
100 kΩ
1/ 2
LM2903
5.1 kΩ
10 kΩ
e
I
~
R
S
2R
S
V
(ref)
high
V
(ref)
low
2N 2222
V
CC
Lamp
1/ 2
LM2903
1/2
LM2903
2R
S
(12 V)
15 V
5.1 kΩ
e
o
e
I
~
15 V
1/2
LM2903
Figure 13. Low frequency op- amp with offset
adjust
Figure 14. Zero crossing detector (single
power supply)
Figure 15. Limit comparatorFigure 16. Split-supply applications - zero
crossing detector
Figure 17. Crystal controlled oscillatorFigure 18. Comparator with a negative
reference
V
= 15 V
CC
15 V
200 kΩ
100 kΩ
1/2
LM2903
f = 100 kHz
0.1 μF
200 kΩ
8/15Doc ID 022662 Rev 2
2 kΩ
V
CC
0
e
o
e
~
I
1/2
LM2903
5.1 kΩ
e
o
5 V
15 V
Page 9
LM2903WTypical application schematics
V
CC
0
V
(ref.)
10 kΩ
1/2
15 kΩ
200 k
Ω
3 kΩ
3 k
Ω
3 k
Ω
10 MΩ
V
O2
V
03
O1
V
51 kΩ
V
1
V
2
0.001μF
V
C1
V
3
V
CC
V
C1
V
1
V
2
V
3
0
0
1
t
t
3
t
4
t
2
t
t
V
CC
t0t
1
V
CC
V
CC
V
C C
=+15V
1/2
LM2903
1/2
1/2
10 kΩ
10 kΩ
10 kΩ
10 kΩ
10 MΩ
10 MΩ
51 kΩ
51 kΩ
t
2
t
o
t
3
t
o
t
A
t
o
Input gating signal
LM2903
LM2903
LM2903
V
CC
V
CC
100 kΩ
3 kΩ
5.1 kΩ
/2
V
CC
/2
0.01 μF
500 pF
100 kΩ
0.1 μF
20 kΩ
50 kΩ
=+30V
+250 mV
V
control
+50 V
700 Hzf100 kHz
o
20 kΩ
3 kΩ
1/ 2
LM2903
1/ 2
LM2903
1/ 2
LM2903
Output 1
Output 2
V
CC
V
CC
Frequency control
voltage input
Vcontrol
10 kΩ
Figure 19. Time delay generator
Figure 20. Two-decade high-frequency VCO
Doc ID 022662 Rev 29/15
Page 10
Package informationLM2903W
5 Package information
In order to meet environmental requirements, ST offers these devices in different grades of
ECOPACK
specifications, grade definitions and product status are available at:
ECOPACK® is an ST trademark.
®
packages, depending on their level of environmental compliance. ECOPACK®
www.st.com.
10/15Doc ID 022662 Rev 2
Page 11
LM2903WPackage information
5.1 SO-8 package information
Figure 21. SO-8 package mechanical drawing
Table 4.SO-8 package mechanical data
Dimensions
Ref.
Min.Typ.Max.Min.Typ.Max.
A1.750.069
A10.100.250.0040.010
A21.250.049
b0.280.480.0110.019
c0.170.230.0070.010
D4.804.905.000.1890.1930.197
E5.806.006.200.2280.2360.244
E13.803.904.000.1500.1540.157
e1.270.050
h0.250.500.0100.020
L0.401.270.0160.050
L11.040.040
k1°8°1°8°
ccc0.100.004
MillimetersInches
Doc ID 022662 Rev 211/15
Page 12
Package informationLM2903W
5.2 TSSOP8 package information
Figure 22. TSSOP8 package mechanical drawing
Table 5.TSSOP8 package mechanical data
Dimensions
Ref.
Min.Typ.Max.Min.Typ.Max.
A1.200.047
A10.050.150.0020.006
A20.801.001.050.0310.0390.041
b0.190.300.0070.012
c0.090.200.0040.008
D2.903.003.100.1140.1180.122
E6.206.406.600.2440.2520.260
E14.304.404.500.1690.1730.177
e0.650.026
k0°8°0°8°
L0.450.600.750.0180.0240.030
L110.039
aaa0.100.004
MillimetersInches
12/15Doc ID 022662 Rev 2
Page 13
LM2903WOrdering information
6 Ordering information
Table 6.Order codes
Order code
LM2903WDT
LM2903WYDT
(1)
Temperature
range
-40°C to +125°C
PackagePackingMarking
SO-8
SO-8
(Automotive grade)
Tape & reel
LM2903WPTTSSOP82903W
LM2903WYPT
1. Qualified and characterized according to AEC Q100 and Q003 or equivalent, advanced screening
according to AEC Q001 and Q 002 or equivalent.
(1)
TSSOP8
(Automotive grade)
2903W
2903WY
903WY
Doc ID 022662 Rev 213/15
Page 14
Revision historyLM2903W
7 Revision history
Table 7.Document revision history
DateRevisionChanges
18-Jan-20121Initial release.
Added TSSOP8 package
05-Nov-20122
Modified note 2 in Table 1: Absolute maximum ratings
Modified note1 in Table 6: Order codes
14/15Doc ID 022662 Rev 2
Page 15
LM2903W
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