LM397 - Single General Purpose Voltage Comparator

Datasheet Packaging Samples & Pricing Reliability Application Notes Knowledge Base

Features

(TA = 25°C. Typical values unless otherwise specified).

5-Pin SOT23 package

 

Industrial operating range

-40°C to +85°C

Single or dual power supplies

 

Wide supply voltage range

5V to 30V

Low supply current

300µA

Low input bias current

7nA

Low input offset current

±1nA

Low input offset voltage

±2mV

Response time

440ns (50mV overdrive)

Input common mode voltage

0 to VS - 1.5V

General Description


The LM397 is a single voltage comparator with an input common mode that includes ground. More...


Applications


A/D converters
Pulse, square wave generators
Peak detector
Industrial applications
  Typical Application
*click for larger image


Parametric Table     expand
Parametric Table    collapse
Response Time 0.25 us
Output Bus Open Drain
Supply Min 5 Volt
Supply Max 30 Volt
Channels 1 Channels
Offset Voltage max, 25C 7 mV
Output Current 13 mA
Input Range Vcm to V-
Supply Current Per Channel 0.25 mA
PowerWise Rating 3 63 uA x us
Response Time 0.25 us
Output Bus Open Drain
Supply Min 5 Volt
Supply Max 30 Volt
Channels 1 Channels
Offset Voltage max, 25C 7 mV
Output Current 13 mA
Input Range Vcm to V-
Supply Current Per Channel 0.25 mA
PowerWise Rating 3 63 uA x us
Max Input Bias Current 400 nA
Temperature Min -40 deg C
Temperature Max 85 deg C
Function Comparator
View Using Catalog


Typical Performance


click for larger image


  Additional Resources
Application Notes (see below)


Connection Diagram


click for larger image



Datasheet
RoHS Compliance Information Size in KbytesDate Click link below to Download
LM397 Single General Purpose Voltage Comparator 604 Kbytes 10-Aug-06 Download

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Package Availability, Models, Samples & Pricing
Part NumberPackageFactory Lead TimeModelsSamples &
Electronic
Orders
Budgetary PricingStd
Pack
Size
Package
Marking
Format
TypePinsSpec.MSL
Rating
Peak
Reflow
RoHS
Report
CAD
Symbols
WeeksQtyQty$US each
LM397MFSOT-235STD
NOPB
1
1
260
260
RoHS Download Full productionN/A
Samples
Buy Now
1K+$0.27reel
of
1000
C397
XTT
6 weeks5000
LM397MFXSOT-235STD
NOPB
1
1
260
260
RoHS Download Full productionN/A
 
Buy Now
1K+$0.27reel
of
3000
C397
XTT
6 weeks5000

General Description


The LM397 is a single voltage comparator with an input common mode that includes ground. The LM397 is designed to operate from a single 5V to 30V power supply or a split power supply. Its low supply current is virtually independent of the magnitude of the supply voltage.

The LM397 features an open collector output stage. This allows the connection of an external resistor at the output. The output can directly interface with TTL, CMOS and other logic levels, by tying the resistor to different voltage levels (level translator).

The LM397 is available in space saving 5-Pin SOT23 package and pin compatible to TI's TL331, single differential comparator.

Reliability Metrics


Part Number Process EFR Reject EFR Sample Size PPM LTA Rejects LTA Device Hours FITS MTTF (Hours)
LM397MFLB3000322490034065002966603676
LM397MFXLB3000322490034065002966603676

Note: The Early Failure Rates (EFR) were calculated as point estimate PPM based on rejects and sample size for EFR. The Long Term Failure Rates were calculated at 60% confidence using the Arrhenius equation at 0.7eV activation energy and derating the assumed stress temperature of 150°C to an application temperature of 55°C.

For more information on Reliability Metrics, please click here.


More Application Notes


TitleSize in Kbytes Date Click link below to Download
AN-184: Application Note 184 References for A/D Converters 64 Kbytes 3-Oct-02 Download
AN-184 (Japanese): Application Note 184 References for A/D Converters
124 Kbytes   Download
AN-173: Application Note 173 IC Zener Eases Reference Design 54 Kbytes 1-Oct-02 Download
AN-460: Application Note 460 LM34/LM35 Precision Monolithic Temperature Sensors 306 Kbytes 20-Sep-02 Download
AN-460 (Japanese): Application Note 460 LM34/LM35 Precision Monolithic Temperature Sensors
322 Kbytes   Download
AN-222: Application Note 222 Super Matched Bipolar Transistor Pair Sets New Standards for Drift and Noise 399 Kbytes 1-Oct-02 Download
AN-293: Application Note 293 Control Applications of CMOS DACs 385 Kbytes 4-Oct-04 Download
AN-286: Application Note 286 Applications of the LM392 Comparator Op Amp IC 135 Kbytes 2-Oct-02 Download
AN-263: Application Note 263 Sine Wave Generation Techniques 350 Kbytes 26-May-09 Download
AN-161: Application Note 161 IC Voltage Reference has 1 ppm per Degree Drift 138 Kbytes 10-Oct-02 Download
AN-181: Application Note 181 3-Terminal Regulator Is Adjustable 165 Kbytes 1-May-04 Download
AN-262: Application Note 262 Applying Dual and Quad FET Op Amps 416 Kbytes 2-Oct-02 Download
AN-311: Application Note 311 Theory and Applications of Logarithmic Amplifiers 258 Kbytes 2-Oct-02 Download
AN-274: Application Note 274 CMOS A/D Converter Interfaces Easily with Many Microprocessors 73 Kbytes 3-Oct-02 Download
AN-299: Application Note 299 Audio Applications of Linear Integrated Circuits 232 Kbytes 24-Feb-99 Download
AN-265: Application Note 265 An Electronic Watt-Watt-Hour Meter 185 Kbytes 3-Oct-02 Download
AN-31: Application Note 31 Op Amp Circuit Collection 962 Kbytes 2-Oct-02 Download

If you have trouble printing or viewing PDF file(s), see Printing Problems.

[Information as of 4-Jul-2009]