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M193AH Datasheet

  • M193AH

  • Low Power Low Offset Voltage Dual Comparators

  • 15頁

  • NSC

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LM193/LM293/LM393/LM2903 Low Power Low Offset Voltage Dual Comparators
August 2002
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
operated 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
comparators.
The LM393 and LM2903 parts are available in National鈥檚
innovative thin micro SMD package with 8 (12 mil) large
bumps.
Advantages
n
n
n
n
n
n
High precision comparators
Reduced V
OS
drift over temperature
Eliminates need for dual supplies
Allows sensing near ground
Compatible with all forms of logic
Power drain suitable for battery operation
Features
n
Wide supply
鈥?Voltage range:
2.0V to 36V
鹵
1.0V to
鹵
18V
鈥?Single or dual supplies:
n
Very low supply current drain (0.4 mA) 鈥?independent
of supply voltage
n
Low input biasing current:
25 nA
鹵
5 nA
n
Low input offset current:
鹵
3 mV
n
Maximum offset voltage:
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
n
Available in the 8-Bump (12 mil) micro SMD package
n
See AN-1112 for micro SMD considerations
Squarewave Oscillator
Non-Inverting Comparator with Hysteresis
00570909
00570938
漏 2002 National Semiconductor Corporation
DS005709
www.national.com

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