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LM2903
Low-power dual voltage comparator
Datasheet - production data
Related products
 See LM2903W for similar device with higher
ESD performances
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 See LM2903H for similar device with operating
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Description
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.
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. (IO = 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.
DocID2470 Rev 12
1/20
www.st.com
Contents
LM2903
Contents
1
Schematic diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2
Package pin connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3
Absolute maximum ratings and operating conditions . . . . . . . . . . . . . 5
4
Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
5
Typical application schematics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
6
Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
6.1
SO8 package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
6.2
TSSOP8 package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
6.3
MiniSO8 package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
6.4
DFN8 2x2 package mechanical data (LM2903Q2T) . . . . . . . . . . . . . . . . 15
6.5
DFN8 2x2 package mechanical data (LM2903YQ3T) . . . . . . . . . . . . . . . 17
7
Ordering information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
8
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
2/20
DocID2470 Rev 12
LM2903
1
Schematic diagram
Schematic diagram
Figure 1. Schematic diagram (1/2 LM2903)
3.5 μA
100 μA
3.5 μA
100 μA
Non-inverting
input
Inverting
input
DocID2470 Rev 12
3/20
20
Package pin connections