Product details

Number of channels (#) 2 Output type Open-collector Propagation delay time (µs) 1.5 Vs (Max) (V) 32 Vs (Min) (V) 3 Vos (offset voltage @ 25 C) (Max) (mV) 5 Iq per channel (Typ) (mA) 0.5 Input bias current (+/-) (Max) (nA) 250 Rail-to-rail In to V- Rating Catalog Operating temperature range (C) 0 to 70 Features VICR (Max) (V) 32 VICR (Min) (V) 3
Number of channels (#) 2 Output type Open-collector Propagation delay time (µs) 1.5 Vs (Max) (V) 32 Vs (Min) (V) 3 Vos (offset voltage @ 25 C) (Max) (mV) 5 Iq per channel (Typ) (mA) 0.5 Input bias current (+/-) (Max) (nA) 250 Rail-to-rail In to V- Rating Catalog Operating temperature range (C) 0 to 70 Features VICR (Max) (V) 32 VICR (Min) (V) 3
PDIP (P) 8 93 mm² 9.81 x 9.43 SOIC (D) 8 19 mm² 4.9 x 3.9 SOIC (D) 8 19 mm² 3.91 x 4.9 VSSOP (DGK) 8 15 mm² 3 x 4.9
  • Wide Power-Supply Voltage Range
    • Single Supply: 3 V to 32 V
    • Dual Supply: ±1.5 V to ±16 V
  • Low Supply-Current Drain Essentially Independent of Supply Voltage: 600 µA
  • Low Input Biasing Current: 50 nA
  • Low Input Offset Voltage: 2 mV
  • Low Input Offset Current: 5 nA
  • Input Common-Mode Voltage Range Includes Ground
  • Differential Input Voltage Range Equals Power-Supply Voltage
  • Additional Operational Amplifier Features
    • Internally Frequency Compensated for Unity Gain
    • Large DC Voltage Gain: 100 dB
    • Wide Bandwidth (Unity Gain): 1 MHz
    • Large Output Voltage Swing: 0 V to V+ - 1.5 V
  • Additional Comparator Features
    • Low Output Saturation Voltage: 250 mV at 4 mA
    • Output Voltage Compatible With All Types of Logic Systems
  • ADVANTAGES
    • Eliminates Need for Dual Power Supplies
    • An Internally Compensated Operational Amplifier and a Precision Comparator in the Same Package
    • Allows Sensing at or Near Ground

  • Wide Power-Supply Voltage Range
    • Single Supply: 3 V to 32 V
    • Dual Supply: ±1.5 V to ±16 V
  • Low Supply-Current Drain Essentially Independent of Supply Voltage: 600 µA
  • Low Input Biasing Current: 50 nA
  • Low Input Offset Voltage: 2 mV
  • Low Input Offset Current: 5 nA
  • Input Common-Mode Voltage Range Includes Ground
  • Differential Input Voltage Range Equals Power-Supply Voltage
  • Additional Operational Amplifier Features
    • Internally Frequency Compensated for Unity Gain
    • Large DC Voltage Gain: 100 dB
    • Wide Bandwidth (Unity Gain): 1 MHz
    • Large Output Voltage Swing: 0 V to V+ - 1.5 V
  • Additional Comparator Features
    • Low Output Saturation Voltage: 250 mV at 4 mA
    • Output Voltage Compatible With All Types of Logic Systems
  • ADVANTAGES
    • Eliminates Need for Dual Power Supplies
    • An Internally Compensated Operational Amplifier and a Precision Comparator in the Same Package
    • Allows Sensing at or Near Ground

The LM392 consists of two independent building-block circuits. One is a high-gain internally-frequency-compensated operational amplifier, and the other is a precision voltage comparator. Both the operational amplifier and the voltage comparator are designed to operate from a single power supply over a wide range of voltages. Both circuits have input stages that force the common-mode input down to ground when operating from a single power supply. Operation from split power supplies also is possible, and the low power-supply current is independent of the magnitude of the supply voltage.

Applications include transducer amplifiers with pulse shapers, DC gain blocks with level detectors, and VCOs, as well as all conventional operational amplifier or voltage-comparator circuits. The LM392 can be operated directly from the standard 5-V power-supply voltage used in digital systems, and the output of the comparator interfaces directly with either TTL or CMOS logic. In addition, the low-power drain makes the LM392 extremely useful in the design of portable equipment.

The LM392 consists of two independent building-block circuits. One is a high-gain internally-frequency-compensated operational amplifier, and the other is a precision voltage comparator. Both the operational amplifier and the voltage comparator are designed to operate from a single power supply over a wide range of voltages. Both circuits have input stages that force the common-mode input down to ground when operating from a single power supply. Operation from split power supplies also is possible, and the low power-supply current is independent of the magnitude of the supply voltage.

Applications include transducer amplifiers with pulse shapers, DC gain blocks with level detectors, and VCOs, as well as all conventional operational amplifier or voltage-comparator circuits. The LM392 can be operated directly from the standard 5-V power-supply voltage used in digital systems, and the output of the comparator interfaces directly with either TTL or CMOS logic. In addition, the low-power drain makes the LM392 extremely useful in the design of portable equipment.

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Technical documentation

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Type Title Date
* Data sheet LM392 datasheet 03 Jan 2006
Application note AN-31 Amplifier Circuit Collection (Rev. D) 21 Oct 2020
E-book The Signal e-book: A compendium of blog posts on op amp design topics 28 Mar 2017
Application note Building an Op Amp With Bipolar Transistors, A Historical Application Note (Rev. A) 19 Sep 2016
Application note AN-256 Circuitry for Inexpensive Relative Humidity Measurement (Rev. B) 06 May 2013
Application note AN-260 A 20-Bit (1 ppm) Linear Slope-Integrating A/D Converter (Rev. B) 05 May 2013
Application note Super Matched Bipolar Transistor Pair Sets New Standards for Drift and Noise (Rev. B) 05 May 2013
Application note AN-20 An Applications Guide for Op Amps (Rev. C) 01 May 2013
Application note AN-29 IC Op Amp Beats FETs on Input Current (Rev. B) 01 May 2013
Application note AN-30 Log Converters (Rev. B) 01 May 2013
Application note AN-4 Monolithic Op Amp—The Universal Linear Component (Rev. B) 01 May 2013
Application note AN-79 IC Preamplifier Challenges Choppers on Drift (Rev. B) 01 May 2013
Application note AN-286 Applications of the LM392 Comparator Op Amp IC (Rev. B) 26 Apr 2013
Application note AN-278 Designing with a New Super Fast Dual Norton Amplifier (Rev. B) 23 Apr 2013
Application note AN-263 Sine Wave Generation Techniques (Rev. C) 22 Apr 2013
Application note Applying a New Precision Op Amp 04 Oct 2004
Application note AN-46 The Phase Locked Loop IC as a Communication System Building Block 14 May 2004
Application note AN-480 A 40 MHz Programmable Video Op Amp 11 May 2004
Application note AN-446 A 150W IC Op Amp Simplifies Design of Power Circuits 10 May 2004
Application note AN-24 A Simplified Test Set for Op Amp Characterization 10 May 2004
Application note AN-32 FET Circuit Applications 10 May 2004
Application note AN-241 Working with High Impedance Op Amps 03 May 2004
Application note Audio Applications of Linear Integrated Circuits 02 May 2004
Application note Predicting Op Amp Slew Rate Limited Response 07 Oct 2002
Application note General Purpose Power Supply 03 Oct 2002
Application note Get Fast Stable Response From Improved Unity-Gain Followers 02 Oct 2002
Application note Get More Power Out of Dual or Quad Op-Amps 02 Oct 2002
Application note Low Drift Amplifiers 02 Oct 2002
Application note Precise Tri-Wave Generation 02 Oct 2002
Application note True RMS Detector 01 Oct 2002

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