Single, Low-Power, Strobed Differential Comparator with Open Collector and Emitter Outputs - LP311

LP311 (ACTIVE)

Single, Low-Power, Strobed Differential Comparator with Open Collector and Emitter Outputs

 

Description

The LP211 and LP311 devices are low-power versions of the industry-standard LM211 and LM311 devices. They take advantage of stable, high-value, ion-implanted resistors to perform the same function as the LM311 series, with a 30:1 reduction in power consumption but only a 6:1 slowdown in response time. They are well suited for battery-powered applications and all other applications where fast response times are not needed. They operate over a wide range of supply voltages, from ±18 V down to a single 3-V supply with less than 300-µA current drain, but are still capable of driving a 25-mA load. The LP211 and LP311 are quite easy to apply free of oscillation if ordinary precautions are taken to minimize stray coupling from the output to either input or to the trim pins. In addition, offset balancing is available to minimize input offset voltage. Strobe capability is also provided to turn off the output (regardless of the inputs) by pulling the strobe pin low.

The LP211 is characterized for operation from –25°C to 85°C. The LP311 is characterized for operation from 0°C to 70°C.

Features

  • Low Power Drain . . . 900 µW Typical With 5-V Supply
  • Operates From ±15 V or From a Single Supply as Low as 3 V
  • Output Drive Capability of 25 mA
  • Emitter Output Can Swing Below Negative Supply
  • Response Time . . . 1.2 µs Typ
  • Low Input Currents:
           Offset Current ...2 nA Typ
           Bias Current . . . 15 nA Typ
  • Wide Common-Mode Input Range:
    • –14.5 V to 13.5 V Using ±15-V Supply
  • Same Pinout as LM211, LM311
  • Designed To Be Interchangeable With Industry Standard LP311

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Parametrics Compare all products in Comparators

 
Number of Channels (#)
Output Type
Vs (Min) (V)
Vs (Max) (V)
Propagation Delay Time (uS)
Vos (Offset Voltage @ 25C) (Max) (mV)
Iq per channel (Max) (mA)
Input Bias Current (+/-) (Max) (nA)
Rail-to-Rail
Rating
Operating Temperature Range (C)
VICR (Max) (V)
VICR (Min) (V)
Package Group
Features
LP311 LP211 LP339
1    1    4   
Open Collector    Open Collector    Open Collector   
3.5    3.5    5   
30    30    30   
1.2    1.2    1.3   
7.5    7.5    5   
0.3    0.3    0.025   
100    100    25   
No    No    Out   
Catalog    Catalog    Catalog   
0 to 70    -25 to 85    0 to 70   
13.5    28.5    3.5   
-14.5    0.5    0   
PDIP
SOIC   
SOIC    PDIP
SOIC   
Strobe    Strobe    N/A   

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