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lm393A-芯片资料介绍.PDF
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lm393A-芯片资料介绍.PDF
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LM193/LM293/LM393/LM2903
Low Power Low Offset Voltage Dual Comparators
General Description
The LM193 series consists of two independent precision
voltage comparators with an offset voltage specification as
low as 2.0 mV max for two comparators which were de-
signed specifically to operate from a single power supply
over a wide range of voltages. Operation from split power
supplies is also possible and the low power supply current
drain is independent of the magnitude of the power supply
voltage. These comparators also have a unique characteris-
tic in that the input common-mode voltage range includes
ground, even though operated from a single power supply
voltage.
Application areas include limit comparators, simple analog to
digital converters; pulse, squarewave and time delay gen-
erators; wide range VCO; MOS clock timers; multivibrators
and high voltage digital logic gates. The LM193 series was
designed to directly interface with TTL and CMOS. When op-
erated from both plus and minus power supplies, the LM193
series will directly interface with MOS logic where their low
power drain is a distinct advantage over standard compara-
tors.
Advantages
n High precision comparators
n Reduced V
OS
drift over temperature
n Eliminates need for dual supplies
n Allows sensing near ground
n Compatible with all forms of logic
n Power drain suitable for battery operation
Features
n Wide supply
— Voltage range: 2.0V to 36V
— single or dual supplies:
±
1.0V to
±
18V
n Very low supply current drain (0.4 mA) — independent
of supply voltage
n Low input biasing current: 25 nA
n Low input offset current:
±
5nA
n Maximum offset voltage:
±
3mV
n Input common-mode voltage range includes ground
n Differential input voltage range equal to the power
supply voltage
n Low output saturation voltage,: 250 mV at 4 mA
n Output voltage compatible with TTL, DTL, ECL, MOS
and CMOS logic systems
Schematic and Connection Diagrams
DS005709-2
May 1999
LM193/LM293/LM393/LM2903 Low Power Low Offset Voltage Dual Comparators
© 1999 National Semiconductor Corporation DS005709 www.national.com
Schematic and Connection Diagrams (Continued)
Note 1: Also available per JM38510/11202
Note 2: See STD Mil DWG 5962-94526
Metal Can Package
DS005709-3
Order Number LM193H,
LH193H/883 (Note 1), LM193AH-QMLV(Note 2)
M193AH, LM193AH/883,
LM293H, LM293AH, LM393H
or LM393AH
See NS Package Number H08C
Dual-In-Line Package
DS005709-1
Order Number LM193J/883 (Note 1),
LM193AJ/883, LM193AJ-QMLV(Note 2)
LM393J, LM393AJ,
LM393M, LM2903M, LM393N,
LM2903J or LM2903N
See NS Package Number J08A,
M08A or N08E
www.national.com 2
Absolute Maximum Ratings (Note 12)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Supply Voltage, V
+
36V
Differential Input Voltage (Note 10) 36V
Input Voltage −0.3V to +36V
Input Current (V
IN
<
−0.3V) (Note 5) 50 mA
Power Dissipation (Note 3)
Molded DIP 780 mW
Metal Can 660 mW
Small Outline Package 510 mW
Output Short-Circuit to Ground
(Note 4) Continuous
Operating Temperature Range
LM393/LM393A 0˚C to +70˚C
LM293/LM293A −25˚C to +85˚C
LM193/LM193A −55˚C to +125˚C
LM2903 −40˚C to +85˚C
Storage Temperature Range −65˚C to +150˚C
Lead Temperature
(Soldering, 10 seconds) +260˚C
Soldering Information
Dual-In-Line Package
Soldering (10 seconds) 260˚C
Small Outline Package 215˚C
Vapor Phase (60 seconds)
Infrared (15 seconds) 220˚C
See AN-450 “Surface Mounting Methods and Their Effect
on Product Reliability” for other methods of soldering
surface mount devices.
ESD rating
(1.5 kΩ in series with 100 pF) 1300V
Electrical Characteristics
(V
+
=
5V, T
A
=
25˚C, unless otherwise stated)
Parameter Conditions LM193A LM293A, LM393A Units
Min Typ Max Min Typ Max
Input Offset Voltage (Note 11) 1.0 2.0 1.0 2.0 mV
Input Bias Current I
IN
(+) or I
IN
(−) with Output In Linear 25 100 25 250 nA
Range, V
CM
=
0V (Note 7)
Input Offset Current I
IN
(+)−I
IN
(−) V
CM
=
0V 3.0 25 5.0 50 nA
Input Common Mode V+
=
30V (Note 8) 0 V
+
−1.5 0 V+−1.5 V
Voltage Range
Supply Current R
L
=
∞
V
+
=
5V 0.4 1 0.4 1 mA
V
+
=
36V 1 2.5 1 2.5 mA
Voltage Gain R
L
≥15 kΩ,V
+
=
15V 50 200 50 200 V/mV
V
O
=
1V to 11V
Large Signal Response V
IN
=
TTL Logic Swing, V
REF
=
1.4V 300 300 ns
Time V
RL
=
5V, R
L
=
5.1 kΩ
Response Time V
RL
=
5V, R
L
=
5.1 kΩ (Note 9) 1.3 1.3 µs
Output Sink Current V
IN
(−)
=
1V, V
IN
(+)
=
0, V
O
≤1.5V 6.0 16 6.0 16 mA
Saturation Voltage V
IN
(−)
=
1V, V
IN
(+)
=
0, I
SINK
≤4 mA 250 400 250 400 mV
Output Leakage Current V
IN
(−)
=
0, V
IN
(+)
=
1V, V
O
=
5V 0.1 0.1 nA
Electrical Characteristics
(V
+
=
5V, T
A
=
25˚C, unless otherwise stated)
Parameter Conditions LM193 LM293, LM393 LM2903 Units
Min Typ Max Min Typ Max Min Typ Max
Input Offset Voltage (Note 11) 1.0 5.0 1.0 5.0 2.0 7.0 mV
Input Bias Current I
IN
(+) or I
IN
(−) with Output In 25 100 25 250 25 250 nA
Linear Range, V
CM
=
0V (Note 7)
Input Offset Current I
IN
(+)−I
IN
(−) V
CM
=
0V 3.0 25 5.0 50 5.0 50 nA
Input Common Mode V+
=
30V (Note 8) 0 V+−1.5 0 V+−1.5 0 V+−1.5 V
Voltage Range
Supply Current R
L
=
∞
V
+
=
5V 0.4 1 0.4 1 0.4 1.0 mA
V
+
=
36V 1 2.5 1 2.5 1 2.5 mA
www.national.com3
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