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PDF LM393 Data sheet ( Hoja de datos )
| Número de pieza | LM393 | |
| Descripción | Low Power Low Offset Voltage Dual Comparators | |
| Fabricantes | National Semiconductor | |
| Logotipo |  |
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 1. Power Dual Comparators - Motorola  Hay una vista previa y un enlace de descarga de LM393 (archivo pdf) en la parte inferior de esta página. Total 14 Páginas | ||
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October 1999
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 VOS 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:
— single or dual supplies:
2.0V to 36V
±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:
±5 nA
n Maximum offset voltage:
±3 mV
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
© 1999 National Semiconductor Corporation DS005709
DS005709-2
www.national.com
1 page  
Electrical Characteristics (Continued)
Note 5: The direction of the input current is out of the IC due to the PNP input stage. This current is essentially constant, independent of the state of the output so
no loading change exists on the reference or input lines.
Note 6: The input common-mode voltage or either input signal voltage should not be allowed to go negative by more than 0.3V. The upper end of the common-mode
voltage range is V+−1.5V at 25˚C, but either or both inputs can go to 36V without damage, independent of the magnitude of V+.
Note 7: The response time specified is for a 100 mV input step with 5 mV overdrive. For larger overdrive signals 300 ns can be obtained, see typical performance
characteristics section.
Note 8: Positive excursions of input voltage may exceed the power supply level. As long as the other voltage remains within the common-mode range, the compara-
tor will provide a proper output state. The low input voltage state must not be less than −0.3V (or 0.3V below the magnitude of the negative power supply, if used).
Note 9: At output switch point, VO≅1.4V, RS=0Ω with V+ from 5V to 30V; and over the full input common-mode range (0V to V+−1.5V), at 25˚C.
Note 10: Refer to RETS193AX for LM193AH military specifications and to RETS193X for LM193H military specifications.
Typical Performance Characteristics LM193/LM293/LM393, LM193A/LM293A/LM393A
Supply Current
Input Current
Output Saturation Voltage
DS005709-25
Response Time for Various
Input Overdrives — Negative
Transition
DS005709-26
Response Time for Various
Input Overdrives — Positive
Transition
DS005709-27
DS005709-28
Typical Performance Characteristics LM2903
Supply Current
Input Current
DS005709-29
Output Saturation Voltage
DS005709-30
DS005709-31
5
DS005709-32
www.national.com
5 Page 
Typical Applications (V+=5.0 VDC) (Continued)
Time Delay Generator
Split-Supply Applications (V+=+15 VDC and V−=−15 VDC)
MOS Clock Driver
DS005709-7
Zero Crossing Detector
DS005709-43
DS005709-42
Comparator With a
Negative Reference
DS005709-44
11
www.national.com
11 Page | ||
| Páginas | Total 14 Páginas | |
| PDF Descargar | [ Datasheet LM393.PDF ] | |
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