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STMicroelectronics
STMicroelectronics

LM2903W Datasheet

Low-power dual voltage comparator


LM2903W Datasheet Preview


LM2903W
Low-power dual voltage comparator
Preliminary data
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
ESD internal protection: 2 kV
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.
The input common-mode voltage range includes
the negative rail even though operated from a
single power supply voltage.
All the pins are protected against electrostatic
discharge up to 2 kV. As a consequence, the input
voltages must not exceed the magnitude of VCC+
or VCC-.
www.DataSheet.net/
D
SO-8
(Plastic micropackage)
Pin connections (top view)
1 - Output 1
2 - Inverting input 1
3 - Non-inverting input 1
4 - VCC-
5 - Non-inverting input 2
6 - Inverting input 2
7 - Output 2
8 - VCC+
January 2012
Doc ID 022662 Rev 1
This is preliminary information on a new product now in development or undergoing evaluation. Details are subject to
change without notice.
1/13
www.st.com
13
Datasheet pdf - http://www.DataSheet4U.co.kr/
Page 1

Schematic diagram
1 Schematic diagram
Figure 1. Schematic diagram (1/2 LM2903W)
6##
—!
—!
—!
—!
.ON INVERTING
INPUT
6##
)NVERTING
INPUT
6##
6##
6##
6##
6##
LM2903W
6O
www.DataSheet.net/
6##
2/13 Doc ID 022662 Rev 1
Datasheet pdf - http://www.DataSheet4U.co.kr/
Page 2

LM2903W
Absolute maximum ratings and operating conditions
2 Absolute maximum ratings and operating conditions
Table 1. Absolute maximum ratings
Symbol
Parameter
Value
Unit
VCC
Vid
Vin
Vout
Rthja
Rthjc
Supply voltage
Differential input voltage
Input voltage
Output voltage
Output short-circuit to ground (1)
Thermal resistance junction to ambient(2)
SO-8
Thermal resistance junction to case(2)
SO-8
±18 to 36
VCC- -0.3 to VCC+ +0.3
36
Infinite
125
40
V
V
V
°C/W
°C/W
Tj
Tstg
ESD
Maximum junction temperature
Storage temperature range
Human body model (HBM)(3)
Machine model (MM)(4)
CDM: charged device model(5)
+150
-65 to +150
2000
200
1500
°C
°C
V
V
V
1.
Short-circuits from the output to VCC+ can
maximum output current is approximately
cause excessive heating and possible
20 mA, independent of the magnitude
destruction.
of VCC+.
The
2. Short-circuits can cause excessive heating and destructive dissipation. Values are typical.
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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
Symbol
Vicm
Toper
Parameter
Common mode input voltage range
Tmin Tamb Tmax
Operating free-air temperature range
Value
0 to VCC+ -1.5
0 to VCC+ -2
-40 to +125
Unit
V
°C
Doc ID 022662 Rev 1
3/13
Datasheet pdf - http://www.DataSheet4U.co.kr/
Page 3
Part Number LM2903W
Manufactur STMicroelectronics
Description Low-power dual voltage comparator
Total Page 13 Pages
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