Features
2
3
45
■ Wide single supply voltage range or dual
supplies +2 V to +36 V or ±1 V to ±18 V
■ Very low supply current (0.4 mA) independent
of supply voltage (1 mW/comparator at +5 V)
■ Low input bias current: 25 nA typ.
■ Low input offset current: ±5 nA typ.
■ Input common-mode voltage range includes
ground
■ Low output saturation voltage:
250 mV typ. (I
■ Differential input voltage range equal to the
supply voltage
■ TTL, DTL, ECL, MOS, CMOS compatible
outputs
= 4 mA)
O
LM2903H
Low-power dual voltage comparator
Datasheet − production data
SO-8
(Plastic micropackage)
Wafer form
Description
This device consists of two independent low
power voltage comparators designed specifically
to operate from a single supply over a wide range
of voltages. Operation from split power supplies is
also possible.
These comparators also have a unique
characteristic in that the input common-mode
voltage range includes ground even though
operated from a single power supply voltage.
Pin connections
(top view)
1
-
+
+
8
7
6
-
March 2012 Doc ID 9875 Rev 4 1/10
This is information on a product in full production.
www.st.com
10
Absolute maximum ratings and operating conditions LM2903H
1 Absolute maximum ratings and operating conditions
Table 1. Absolute maximum ratings (AMR)
Symbol Parameter Value Unit
V
CC
V
id
V
in
R
thja
R
thjc
Supply voltage ±18 or 36 V
Differential input voltage ±36 V
Input voltage -0.3 to +36 V
Output short-circuit to ground
(1)
Thermal resistance junction to ambient
(SO-8)
Thermal resistance junction to case
(2)
(SO-8)
(2)
20 mA
125 °C/W
40 °C/W
Tj Maximum junction temperature 160 °C
HBM: human body model
ESD
MM: machine model
CDM: charged device model
T
stg
1. Short-circuit from the output to V
output current is approximately 20 mA, independent of the magnitude of V
2. Short-circuits can cause excessive heating and destructive dissipation. Values are typical.
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
Storage temperature range -65 to +150 °C
CC
(3)
(4)
(5)
+
can cause excessive heating and eventual destruction. The maximum
1500
CC
800
200
+
.
V
Symbol Parameter Value Unit
+
V
T
CC
oper
Supply voltage 2 to 36 V
Operating free-air temperature range -40 to +150 °C
Input common mode voltage range (V
V
icm
1. The input common-mode voltage of either input signal voltage should not be allowed to go negative by
more than 0.3 V. The upper end of the common-mode voltage range is V
inputs can go to +30 V without damage.
T
T
amb
min
= +25°C
≤ T
amb
≤ T
max
2/10 Doc ID 9875 Rev 4
CC
= 30 V)
(1)
+
-1.5
CC
+
-2
CC
–1.5 V, but either or both
CC
0 to V
0 to V
+
V
LM2903H Circuit schematics
2 Circuit schematics
Figure 1. Schematic diagram (1/2 LM2903)
VCC+
3.5µA 100µA 3.5µA 100µA
Non-Inverting
Input
Inverting
Input
Figure 2. Pad locations
OUT 2
Vcc +
year
E- (2)
y
OUT 1
Die id.
E- (1) E+ (1)
x
VCC- VCC-
E+ (2)
GND
All dimensions are specified in micrometer (um).
VCC-
Vo
Pad dimensionsPad placementName
Pad dimensionsPad placementName
YXYX
YXYX
9090415830GND
9090415830GND
9090100750E+1
9090100750E+1
9090100400E-1
9090100400E-1
9090100100OUT1
9090100100OUT1
909041565Vcc +
909041565Vcc +
909073090OUT2
909073090OUT2
9090720410E-2
9090720410E-2
9090720760E+2
9090720760E+2
Doc ID 9875 Rev 4 3/10
Electrical characteristics LM2903H
3 Electrical characteristics
Table 3. V
CC
+
= 5V, V
Symbol Parameter Min. Typ. Max. Unit
V
A
Input offset voltage
io
I
io
I
ib
VD
≤ T
T
min
amb
Input offset current
≤ T
T
min
amb
Input bias current
T
≤ T
min
amb
Large signal voltage gain (V
≤ T
≤ T
≤ T
Supply current (all comparators)
I
V
V
I
I
sink
CC
OL
OH
t
re
id
+
V
= 5V, no load
CC
+
= 30V, no load
V
CC
Differential input voltage
Low level output voltage (Vid = -1V, I
T
≤ T
amb
≤ T
min
High level output current (V
T
≤ T
amb
≤ T
min
Output sink current (Vid = -1V,Vo = 1.5V)
T
≤ T
amb
≤ T
min
Small signal response time
Large signal response time
rel
TTL input (V
Output signal at 50% of final value
t
Output signal at 95% of final value
1. At output switch point, VO ≈ 1.4 V, RS = 0 Ω with V
2. The direction of the input current is out of 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.
+
–1.5 V).
to V
CC
independent of the state of the output, so there is no load charge on the reference of input lines.
common-mode range, the comparator will provide 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)
-
= GND, T
CC
(1)
max
max
(2)
max
max
max
max
= +1.4 V, RL=5.1kΩ to V
ref
amb
+
= 15V,RL=15kΩ, Vo=1 to 11V) 25 200 V/mV
CC
(3)
CC+ =Vo
(4)
(RL = 5.1kΩ to V
(5)
= 25°C (unless otherwise specified)
17
550
150
25 250
400
0.4
1
V
= 4mA)
sink
=30V, Vid = 1V)
+
)1.3µs
CC
+
)
CC
+
from 5 V to 30 V, and over the full input common-mode range (0 V
CC
6
2
250 400
800
0.1
16
500
15
1
2.5
CC
1
1
mV
nA
nA
mA
+
V
mV
nA
µA
mA
ns
µs
4/10 Doc ID 9875 Rev 4
LM2903H Electrical characteristics
Figure 3. Supply current vs. supply voltage Figure 4. Input current vs. supply voltage
1.0
0.8
0.6
0.4
T
AMB
T
AMB
= - 40 °C
T
= + 25 °C
AMB
= + 125 °C
SUPPLY CURRENT (mA)
0.2
0.0
0 10203040
T
AMB
= + 150 °C
SUPPLY VOLTAGE (V)
Figure 5. Output saturation voltage vs.
output current (V
10
1
T
= + 150 °C
AMB
T
= + 125 °C
AMB
0.1
OUTPUT SATURATION VOLTAGE (V)
0.01
0.1 1 10 100
OUTPUT SINK CURRENT (mA)
CC
T
= 5 V)
T
= - 40 °C
AMB
= + 25 °C
AMB
50
40
T
= - 40 °C
= + 25 °C
AMB
T
= + 150 °C
AMB
30
20
T
AMB
INPUT BIAS CURRENT (nA)
10
0
010203040
T
AMB
= + 125 °C
SUPPLY VOLTAGE (V)
Figure 6. Response time for various input
overdrives - negative transition
6
Input overdrive : 5mV
5
4
20mV
3
2
1
100mV
0
0
-50
-100
0 0.5 1 1.5 2
INPUT VOLTAGE (mV) OUTPUT VOLTAGE (V)
TIME (
m
5V
= +25°C
5.1k
e
o
e
I
T
amb
s)
Figure 7. Response time for various input
overdrives - positive transition
W
6
Input overdrive : 100mV
5
4
3
2
1
0
100
50
T
0
0 0.5 1 1.5 2
INPUT VOLTAGE (mV) OUTPUT VOLTAGE (V)
amb
20mV
= +25°C
TIME (
m
5mV
s)
5V
W
5.1k
e
I
e
o
Doc ID 9875 Rev 4 5/10
Package information LM2903H
4 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: www.st.com.
ECOPACK
®
packages, depending on their level of environmental compliance. ECOPACK®
®
is an ST trademark.
6/10 Doc ID 9875 Rev 4
LM2903H Package information
Figure 8. SO-8 package mechanical drawing
Table 4. SO-8 package mechanical data
Dimensions
Ref.
Millimeters Inches
Min. Typ. Max. Min. Typ. Max.
A1.750.069
A1 0.10 0.25 0.004 0.010
A2 1.25 0.049
b 0.28 0.48 0.011 0.019
c 0.17 0.23 0.007 0.010
D 4.80 4.90 5.00 0.189 0.193 0.197
E 5.80 6.00 6.20 0.228 0.236 0.244
E1 3.80 3.90 4.00 0.150 0.154 0.157
e 1.27 0.050
h 0.25 0.50 0.010 0.020
L 0.40 1.27 0.016 0.050
k1° 8°1° 8°
ccc 0.10 0.004
Doc ID 9875 Rev 4 7/10
Ordering information LM2903H
5 Ordering information
Table 5. Order codes
Order code Temperature range Package Packing Marking
JLM2903H- E6D1
LM2903HD
LM2903HDT
LM2903HYDT
1. Qualified and characterized according to AEC Q100 and Q003 or equivalent, advanced screening
according to AEC Q001 & Q 002 or equivalent.
(1)
-40°C, +150°C
Wafer
SO-8
SO-8
(Automotive grade)
Tube or
Tape & reel
Tape & reel 2903HY
2903H
8/10 Doc ID 9875 Rev 4
LM2903H Revision history
6 Revision history
Table 6. Document revision history
Date Revision Changes
25-Sep-2003 1 Initial release.
23-Aug-2005 2 PPAP references inserted in the datasheet, see order codes table.
27-Mar-2008 3
13-Mar-2012 4
Added ESD parameters in AMR table.
Updated document format.
Changed value of T
Removed LM2903HYD order code from Ta bl e 5 .
in Table 1: Absolute maximum ratings (AMR).
J
Doc ID 9875 Rev 4 9/10
LM2903H
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10/10 Doc ID 9875 Rev 4
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