ST LM2903H User Manual
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
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