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LM2903/LM2903I,LM393/LM393A,
LM293/LM293A
Dual Differential Comparator
Features
•
•
•
•
•
•
•
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Single Supply Operation: 2V to 36V
Dual Supply Operation:
±
1V to
±18V
Allow Comparison of Voltages Near Ground Potential
Low Current Drain 800µA Typ.
Compatible with all Forms of Logic
Low Input Bias Current 25nA Typ.
Low Input Offset Current
±5nA
Typ.
Low Offset Voltage
±1mV
Typ.
Description
The LM2903/LM2903I, LM393/LM393A, LM293/
LM293A consist of two independent voltage comparators
designed to operate from a single power supply over a wide
voltage range.
8-DIP
1
8-SOP
1
Internal Block Diagram
Rev. 1.0.3
©2001 Fairchild Semiconductor Corporation
LM2903/LM2903I,LM393/LM393A, LM293/LM293A
Schematic Diagram
Absolute Maximum Ratings
Parameter
Power Supply Voltage
Differential Input Voltage
Input Voltage
Output Short Circuit to GND
Power Dissipation, Ta = 25°C
8-DIP
8-SOP
Operating Temperature
LM393/LM393A
LM2903
LM2903I
LM293/LM293A
Storage Temperature
Symbol
V
CC
V
I(DIFF)
V
I
-
P
D
Value
±18
or 36
36
- 0.3 to +36
Continuous
1040
480
0 ~ +70
- 40 ~ +85
-40 ~ +105
-25 ~ +85
- 65 ~ +150
Unit
V
V
V
-
mW
T
OPR
T
STG
°C
°C
Thermal Data
Parameter
Thermal Resistance Junction-Ambient Max.
8-DIP
8-SOP
Symbol
Rθja
Value
120
260
Unit
°C/W
2
LM2903/LM2903I,LM393/LM393A, LM293/LM293A
Electrical Characteristics
(V
CC
= 5V, T
A
= 25°C, unless otherwise specified)
Parameter
Input Offset
Voltage
Input Offset
Current
Input Bias
Current
Input Common
Mode
Voltage Range
Supply Current
Voltage Gain
Large Signal
Response
Time
Response
Time
Output Sink
Current
Output
Saturation
Voltage
Output
Leakage
Current
Symbol
V
IO
I
IO
I
BIAS
Conditions
V
O(P)
=1.4V, R
S
= 0Ω
V
CM
= 0 to1.5V Note 1
Note 1
Note 1
LM293A/LM393A
Min.
-
-
-
-
-
-
0
Note 1
I
CC
G
V
T
LRES
T
RES
I
SINK
V
SAT
R
L
=
∞ ,
V
CC
= 5V
R
L
=
∞,
V
CC
= 30V
V
CC
=15V, R
L
≥
15KΩ
(for large V
O(P-P)swing
)
V
I
=TTL Logic Swing
V
REF
=1.4V, V
RL
= 5V,
R
L
= 5.1KΩ
V
RL
=5V, R
L
=5.1KΩ
V
I(-)
≥
1V, V
I(+)
=0V,
V
O(P)
≤1.5V
V
I(-)
≥
1V, VI(+) = 0V
I
SINK
= 4mA
Note 1
V
O(P)
= 5V
V
O(P)
= 30V
0
-
-
50
-
-
6
-
-
-
-
Typ.
±1
-
±5
-
65
-
-
-
0.6
0.8
200
350
1.4
18
160
-
0.1
-
Max.
±2
±4.0
±50
±150
250
400
V
CC
-1.5
V
CC
-2
1
2.5
-
-
-
-
400
700
-
1.0
-
-
-
-
-
-
0
0
-
-
50
-
-
6
-
-
-
-
LM293/LM393
Min.
Typ.
±1
-
±5
-
65
-
-
-
0.6
0.8
200
350
1.4
18
160
-
0.1
-
Max.
±5
±9.0
±50
±150
250
400
V
CC
-1.5
V
CC
-2
1
2.5
-
-
-
-
400
700
-
1.0
mV
nA
µA
mA
V/mV
nS
µS
mA
Unit
mV
nA
nA
V
I(R)
V
V
I(-)
= 0V,
I
O(LKG)
V
I(+)
= 1V
NOTE 1
LM393/LM393A: 0
≤
T
A
≤
+70°C
LM2903: -40
≤
T
A
≤
+85°C
LM2903I: -40
≤
T
A
≤
+105°C
LM293/LM293A : -25
≤
T
A
≤
+85°C
3
LM2903/LM2903I,LM393/LM393A, LM293/LM293A
Electrical Characteristics
(Continued)
(V
CC
= 5V, T
A
= 25°C, unless otherwise specified)
Parameter
Input Offset Voltage
Input Offset Current
Input Bias Current
Input Common Mode
Voltage Range
Supply Current
Voltage Gain
Large Signal Response Time
Response Time
Output Sink Current
Output Saturation Voltage
Output Leakage Current
Note 1
LM393/LM393A: 0
≤
T
A
≤
+70°C
LM2903: -40
≤
T
A
≤
+85°C
LM2903I: -40
≤
T
A
≤
+105°C
LM293/LM293A : -25
≤
T
A
≤
+85°C
Symbol
V
IO
I
IO
I
BIAS
Conditions
V
O(P)
=1.4V, R
S
= 0Ω
V
CM
= 0 to 1.5V
Note 1
Note 1
Note 1
LM2903/LM2903I
Min.
-
-
-
-
-
-
0
Typ.
±1
±9
±5
±50
65
-
-
-
0.6
1
100
350
1.5
16
160
-
0.1
-
Max.
±7
±15
±50
±200
250
500
V
CC
-1.5
V
CC
-2
1
2.5
-
-
-
-
400
700
-
1.0
Unit
mV
nA
nA
V
I(R)
Note 1
I
CC
G
V
T
LRES
T
RES
I
SINK
V
SAT
I
O(LKG)
R
L
=
∞,
V
CC
= 5V
R
L
=
∞,
V
CC
= 30V
V
CC
=15V, R
L
≥15KΩ
(for large V
O(P-P)swing
)
V
I
=TTL Logic Swing
V
REF
=1.4V, V
RL
= 5V, R
L
= 5.1KΩ
V
RL
= 5V, R
L
= 5.1KΩ
V
I(-)
≥
1V, V
I(+)
= 0V, V
O(P)
≤
1.5V
V
I(-)
≥
1V, VI(+) = 0V
I
SINK
= 4mA
V
I(-)
= 0V,
V
I(+)
= 1V
Note 1
V
O(P)
= 5V
V
O(P)
= 30V
V
0
-
-
25
-
-
6
-
-
-
-
mA
V/mV
nS
µS
mA
mV
nA
µA
4
LM2903/LM2903I,LM393/LM393A, LM293/LM293A
Typical Performance Characteristics
Figure 1. Supply Current vs Supply Voltage
Figure 2. Input Current vs Supply Voltage
Figure 3. Output Saturation Voltage vs Sink Current
Figure 4. Response Time for Various Input
Overdrive-Negative Transition
Figure 5. Response Time for Various Input
Overdrive-Positive Transition
5
