LM2903
Low-power dual voltage comparator
Datasheet
-
production data
Related products
See LM2903W for similar device with higher
ESD performances
See LM2903H for similar device with operating
temperature up to 150 °C
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.
In addition, the device has a unique characteristic
in that the input common-mode voltage range
includes the negative rail even though operated
from a single power supply voltage.
Features
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
negative rail
Low output saturation voltage:
250 mV typ. (I
O
= 4 mA)
Differential input voltage range equal to the
supply voltage
TTL, DTL, ECL, MOS, CMOS compatible
outputs
Automotive qualification
November 2017
This is information on a product in full production.
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Contents
LM2903
Contents
1
2
3
4
5
6
Schematic diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Package pin connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Absolute maximum ratings and operating conditions . . . . . . . . . . . . . 5
Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Typical application schematics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
6.1
6.2
6.3
6.4
6.5
SO8 package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
TSSOP8 package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
MiniSO8 package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
DFN8 2x2 package mechanical data (LM2903Q2T) . . . . . . . . . . . . . . . . 15
DFN8 2x2 package mechanical data (LM2903YQ3T) . . . . . . . . . . . . . . . 17
7
8
Ordering information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
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LM2903
Schematic diagram
1
Schematic diagram
Figure 1. Schematic diagram (1/2 LM2903)
3.5
μA
100
μA
3.5
μA
100
μA
Non-inverting
input
Inverting
input
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Package pin connections
LM2903
2
Package pin connections
Figure 2. Pin connections for each package (top view)
(a)
a. Exposed pad can be left floating or connected to ground.
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LM2903
Absolute maximum ratings and operating conditions
3
Absolute maximum ratings and operating conditions
Table 1. Absolute maximum ratings
Symbol
V
CC
V
id
V
in
Supply voltage
Differential input voltage
Input voltage
Output short-circuit to ground
(1)
Thermal resistance junction to ambient
(2)
SO8
TSSOP8
MiniSO8
DFN8 2x2 mm
Thermal resistance junction to case
(2)
SO8
TSSOP8
MiniSO8
DFN8 2x2 mm
Maximum junction temperature
Storage temperature range
Human body model (HBM)
(3)
Machine model (MM)
(4)
ESD
CDM: charged device model (all packages
except MiniSO8)
(5)
CDM: charged device model (MiniSO8)
Parameter
Value
±18 or 36
±36
-0.3 to +36
Infinite
125
120
190
57
°C/W
40
37
39
57
+150
°C
-65 to +150
800
V
200
1.5
kV
1.3
V
Unit
R
thja
R
thjc
T
j
T
stg
1. Short-circuits from the output to V
CC+
can cause excessive heating and possible destruction. The
maximum output current is approximately 20 mA, independent of the magnitude of V
CC+
.
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 kresistor 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
).
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
Symbol
V
icm
T
oper
Parameter
Common mode input voltage range
T
min
T
amb
T
max
Operating free-air temperature range
Value
0 to V
CC+
-1.5
0 to V
CC+
-2
-40 to +125
Unit
V
°C
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