LM393, LM293, LM2903,
LM2903V, NCV2903,
NCV2903V
Low Offset Voltage
Dual Comparators
The LM393 series are dual independent precision voltage
comparators capable of single or split supply operation. These devices
are designed to permit a common mode range−to−ground level with
single supply operation. Input offset voltage specifications as low as
2.0 mV make this device an excellent selection for many applications
in consumer, automotive, and industrial electronics.
Features
8
1
SOIC−8
D SUFFIX
CASE 751
1
Micro8E
DM SUFFIX
CASE 846A
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PDIP−8
N SUFFIX
CASE 626
•
•
•
•
•
•
•
•
•
Wide Single−Supply Range: 2.0 Vdc to 36 Vdc
Split−Supply Range:
±1.0
Vdc to
±18
Vdc
Very Low Current Drain Independent of Supply Voltage: 0.4 mA
Low Input Bias Current: 25 nA
Low Input Offset Current: 5.0 nA
Low Input Offset Voltage: 5.0 mV (max) LM293/393
Input Common Mode Range to Ground Level
Differential Input Voltage Range Equal to Power Supply Voltage
Output Voltage Compatible with DTL, ECL, TTL, MOS, and CMOS
Logic Levels
•
ESD Clamps on the Inputs Increase the Ruggedness of the Device
without Affecting Performance
•
NCV Prefix for Automotive and Other Applications Requiring
Unique Site and Control Change Requirements; AEC−Q100
Qualified and PPAP Capable
•
These Devices are Pb−Free, Halogen Free/BFR Free and are RoHS
Compliant
V
CC
+ Input
- Input
Output
8
8
1
PIN CONNECTIONS
Output A
Inputs A
GND
1
2
3
4
8
−
+
7
V
CC
Output B
Inputs B
−
+
5
6
(Top View)
DEVICE MARKING AND ORDERING
INFORMATION
See detailed marking information and ordering and shipping
information on pages 6 and 7 of this data sheet.
R2
2.1 k
Q3
F1
R4
2.0 k
Q4
Q5
Q6
Q14
Q10
Q1
Q2
R1
4.6 k
Q11
Q8
Q9
Q12
Q15
Q16
Figure 1. Representative Schematic Diagram
(Diagram shown is for 1 comparator)
©
Semiconductor Components Industries, LLC, 2013
December, 2013
−
Rev. 24
1
Publication Order Number:
LM393/D
LM393, LM293, LM2903, LM2903V, NCV2903, NCV2903V
MAXIMUM RATINGS
Rating
Power Supply Voltage
Input Differential Voltage
Input Common Mode Voltage Range (Note 1)
Output Voltage
Output Short Circuit−to−Ground
Output Sink Current (Note 2)
Power Dissipation @ T
A
= 25°C
Derate above 25°C
Operating Ambient Temperature Range
LM293
LM393
LM2903
LM2903V, NCV2903 (Note 3)
NCV2903V (Note 3)
Maximum Operating Junction Temperature
LM393, 2903, LM2903V
LM293, NCV2903
Storage Temperature Range
ESD Protection at any Pin (Note 4)
−
Human Body Model
−
Machine Model
Symbol
V
CC
V
IDR
V
ICR
V
O
I
SC
I
Sink
P
D
1/R
qJA
T
A
−25
to +85
0 to +70
−40
to +105
−40
to +125
−40
to +150
T
J(max)
150
150
−65
to +150
1500
150
°C
Value
+36 or
±18
36
−0.3
to +36
36
Continuous
20
570
5.7
Unit
V
V
V
V
mA
mW
mW/°C
°C
T
stg
V
ESD
°C
V
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the
Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect
device reliability.
1. For supply voltages less than 36 V, the absolute maximum input voltage is equal to the supply voltage.
2. The maximum output current may be as high as 20 mA, independent of the magnitude of V
CC
, output short circuits to V
CC
can cause
excessive heating and eventual destruction.
3.
NCV2903 and NCV2903V are qualified for automotive use.
4. V
ESD
rating for NCV/SC devices is: Human Body Model
−
2000 V; Machine Model
−
200 V.
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LM393, LM293, LM2903, LM2903V, NCV2903, NCV2903V
ELECTRICAL CHARACTERISTICS
(V
CC
= 5.0 Vdc, T
low
≤
T
A
≤
T
high
, unless otherwise noted.)
LM293, LM393
Characteristic
Input Offset Voltage (Note 6)
T
A
= 25°C
T
low
≤
T
A
≤
T
high
Input Offset Current
T
A
= 25°C
T
low
≤
T
A
≤
T
high
Input Bias Current (Note 7)
T
A
= 25°C
T
low
≤
T
A
≤
T
high
Input Common Mode Voltage Range (Note 7)
T
A
= 25°C
T
low
≤
T
A
≤
T
high
Voltage Gain
R
L
≥
15 kW, V
CC
= 15 Vdc, T
A
= 25°C
Large Signal Response Time
V
in
= TTL Logic Swing, V
ref
= 1.4 Vdc
V
RL
= 5.0 Vdc, R
L
= 5.1 kW, T
A
= 25°C
Response Time (Note 9)
V
RL
= 5.0 Vdc, R
L
= 5.1 kW, T
A
= 25°C
Input Differential Voltage (Note 10)
All V
in
≥
GND or V− Supply (if used)
Output Sink Current
V
in
≥
1.0 Vdc, V
in+
= 0 Vdc, V
O
≤
1.5 Vdc T
A
= 25°C
Output Saturation Voltage
V
in
≥
1.0 Vdc, V
in+
= 0, I
Sink
≤
4.0 mA, T
A
= 25°C
T
low
≤
T
A
≤
T
high
Output Leakage Current
V
in−
= 0 V, V
in+
≥
1.0 Vdc, V
O
= 5.0 Vdc, T
A
= 25°C
V
in−
= 0 V, V
in+
≥
1.0 Vdc, V
O
= 30 Vdc,
T
low
≤
T
A
≤
T
high
Supply Current
R
L
=
∞
Both Comparators, T
A
= 25°C
R
L
=
∞
Both Comparators, V
CC
= 30 V
Symbol
V
IO
Min
−
−
−
−
−
−
0
0
50
−
Typ
±1.0
−
±5.0
−
25
−
−
−
200
300
Max
±5.0
±9.0
±50
±150
250
400
V
CC
−1.5
V
CC
−2.0
−
−
LM2903, LM2903V,
NCV2903, NCV2903V
Min
−
−
−
−
−
−
0
0
25
−
Typ
±2.0
±9.0
±5.0
±50
25
200
−
−
200
300
Max
±7.0
±15
nA
±50
±200
nA
250
500
V
V
CC
−1.5
V
CC
−2.0
−
−
V/mV
ns
Unit
mV
I
IO
I
IB
V
ICR
A
VOL
−
t
TLH
V
ID
I
Sink
V
OL
−
−
6.0
1.3
−
16
−
V
CC
−
−
−
6.0
1.5
−
16
−
V
CC
−
ms
V
mA
mV
−
−
−
−
150
−
0.1
−
0.4
−
400
700
−
1000
1.0
2.5
−
−
−
−
−
−
−
200
0.1
−
0.4
−
400
700
nA
−
1000
mA
1.0
2.5
I
OL
I
CC
−
−
LM293 T
low
=
−25°C,
T
high
= +85°C
LM393 T
low
= 0°C, T
high
= +70°C
LM2903 T
low
=
−40°C,
T
high
= +105°C
LM2903V & NCV2903 T
low
=
−40°C,
T
high
= +125°C
NCV2903V T
low
=
−40°C,
T
high
= +150°C
NCV2903 and NCV2903V are qualified for automotive use.
5. The maximum output current may be as high as 20 mA, independent of the magnitude of V
CC
, output short circuits to V
CC
can cause
excessive heating and eventual destruction.
6. At output switch point, V
O
]1.4
Vdc, R
S
= 0
W
with V
CC
from 5.0 Vdc to 30 Vdc, and over the full input common mode range
(0 V to V
CC
=
−1.5
V).
7. Due to the PNP transistor inputs, bias current will flow out of the inputs. This current is essentially constant, independent of the output state,
therefore, no loading changes will exist on the input lines.
8. Input common mode of either input should not be permitted to go more than 0.3 V negative of ground or minus supply. The upper limit of
common mode range is V
CC
−1.5
V.
9. Response time is specified with a 100 mV step and 5.0 mV of overdrive. With larger magnitudes of overdrive faster response times are
obtainable.
10. The comparator will exhibit proper output state if one of the inputs becomes greater than V
CC
, the other input must remain within the common
mode range. The low input state must not be less than
−0.3
V of ground or minus supply.
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LM393, LM293, LM2903, LM2903V, NCV2903, NCV2903V
LM293/393
80
IIB , INPUT BIAS CURRENT (nA)
IIB , INPUT BIAS CURRENT (nA)
70
60
T
A
= -55° C
50
T
A
= 0° C
40
30
20
10
0
0
5.0
10
15
20
25
30
V
CC
, SUPPLY VOLTAGE (Vdc)
35
40
T
A
= +25° C
T
A
= +125°C
T
A
= +70° C
80
70
60
50
40
30
20
10
0
0
5.0
10
15
20
25
V
CC
, SUPPLY VOLTAGE (Vdc)
30
35
40
T
A
= +85° C
T
A
= 0° C
T
A
= +25° C
T
A
= -40° C
LM2903
Figure 2. Input Bias Current versus
Power Supply Voltage
Figure 3. Input Bias Current versus
Power Supply Voltage
10
VOL , SATURATION VOLTAGE (Vdc)
VOL , SATURATION VOLTAGE (Vdc)
Out of
Saturation
T
A
= +125°C
10
Out of
Saturation
1.0
1.0
T
A
= +85° C
0.1
T
A
= +25° C
0.1
T
A
= +25° C
T
A
= -55° C
0.01
0.01
T
A
= -40° C
0.1
T
A
= 0° C
0.001
0.01
0.1
1.0
10
100
0.001
0.01
1.0
10
100
I
Sink
, OUTPUT SINK CURRENT (mA)
I
Sink
, OUTPUT SINK CURRENT (mA)
Figure 4. Output Saturation Voltage
versus Output Sink Current
Figure 5. Output Saturation Voltage
versus Output Sink Current
1.0
ICC , SUPPLY CURRENT (mA)
0.8
T
A
= 0° C
T
A
= +25° C
0.6
T
A
= +70° C
0.4
0.2
0
T
A
= +125°C
R
L
=
R
5.0
10
15
20
25
30
35
40
ICC , SUPPLY CURRENT (mA)
T
A
= -55° C
1.2
1.0
0.8
T
A
= -40° C
T
A
= 0° C
T
A
= +25° C
0.6
0.4
0
5.0
10
15
20
25
T
A
= +85° C
R
L
=
R
30
35
40
V
CC
, SUPPLY VOLTAGE (Vdc)
V
CC
, SUPPLY VOLTAGE (Vdc)
Figure 6. Power Supply Current versus
Power Supply Voltage
Figure 7. Power Supply Current versus
Power Supply Voltage
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LM393, LM293, LM2903, LM2903V, NCV2903, NCV2903V
APPLICATIONS INFORMATION
These dual comparators feature high gain, wide
bandwidth characteristics. This gives the device oscillation
tendencies if the outputs are capacitively coupled to the
inputs via stray capacitance. This oscillation manifests
itself during output transitions (V
OL
to V
OH
). To alleviate
this situation, input resistors < 10 kW should be used.
+15 V
R4
220 k
6.8 k
R2
R5
220 k
*
)
LM393
The addition of positive feedback (< 10 mV) is also
recommended. It is good design practice to ground all
unused pins.
Differential input voltages may be larger than supply
voltage without damaging the comparator’s inputs. Voltages
more negative than
−0.3
V should not be used.
R1
8.2 k
V
in
R1
D1
10 k
+V
CC
*
10 k
V
in
V
in(min)
Q
15 k
R3
10 m
V
in
LM393
)
-V
EE
V
CC
V
O
- V
EE
DQ
Q
D1 prevents input from going negative by more than 0.6 V.
R1 + R2 = R3
R3
≤
R5
for small error in zero crossing.
10
V
in(min)
[
0.4 V peak for 1% phase distortion (DQ).
Figure 8. Zero Crossing Detector
(Single Supply)
Figure 9. Zero Crossing Detector
(Split Supply)
V
CC
V
CC
R
-
LM393
V
C
+
V
O
+ V
ref
``ON'' for t
t
O
+
Dt
where:
V
ref
)
Dt
= RC n (
V
CC
V
in
0
V
O
0
V
C
0
t
O
V
ref
V
ref
1.0 mW
V
CC
R
L
10 k
t
R
L
-
LM393
+
V
CC
51 k
-
0.001
mF
LM393
+
C
V
O
51 k
51 k
V
CC
V
O
0
t
t
Figure 10. Free−Running Square−Wave Oscillator
V
CC
Figure 11. Time Delay Generator
R
S
= R1 | | R2
R
S
-
LM393
+
V
ref
R1
R2
R
L
V
th1
= V
ref
+
(V
CC
-V
ref
) R1
R1 + R2 + R
L
(V
ref
-V
O
Low) R1
R1 + R2
V
th2
= V
ref
-
Figure 12. Comparator with Hysteresis
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