Product details

Number of channels (#) 1 Total supply voltage (Max) (+5V=5, +/-5V=10) 32 Total supply voltage (Min) (+5V=5, +/-5V=10) 3 Rail-to-rail In to V- GBW (Typ) (MHz) 1 Slew rate (Typ) (V/us) 0.5 Vos (offset voltage @ 25 C) (Max) (mV) 7 Iq per channel (Typ) (mA) 0.45 Vn at 1 kHz (Typ) (nV/rtHz) 40 Rating Catalog Operating temperature range (C) -40 to 85 Offset drift (Typ) (uV/C) 7 Features Input bias current (Max) (pA) 250000 CMRR (Typ) (dB) 85 Output current (Typ) (mA) 20 Architecture Bipolar
Number of channels (#) 1 Total supply voltage (Max) (+5V=5, +/-5V=10) 32 Total supply voltage (Min) (+5V=5, +/-5V=10) 3 Rail-to-rail In to V- GBW (Typ) (MHz) 1 Slew rate (Typ) (V/us) 0.5 Vos (offset voltage @ 25 C) (Max) (mV) 7 Iq per channel (Typ) (mA) 0.45 Vn at 1 kHz (Typ) (nV/rtHz) 40 Rating Catalog Operating temperature range (C) -40 to 85 Offset drift (Typ) (uV/C) 7 Features Input bias current (Max) (pA) 250000 CMRR (Typ) (dB) 85 Output current (Typ) (mA) 20 Architecture Bipolar
SOT-23 (DBV) 5 5 mm² 2.9 x 1.6
  • (VCC = 5 V, TA = 25°C.
    Typical values unless specified.)
  • Gain-Bandwidth Product 1 MHz
  • Low Supply Current 430 µA
  • Low Input Bias Current 45 nA
  • Wide Supply Voltage Range 3 V to 32 V
  • Stable With High Capacitive Loads
  • Single Version of LM324
  • (VCC = 5 V, TA = 25°C.
    Typical values unless specified.)
  • Gain-Bandwidth Product 1 MHz
  • Low Supply Current 430 µA
  • Low Input Bias Current 45 nA
  • Wide Supply Voltage Range 3 V to 32 V
  • Stable With High Capacitive Loads
  • Single Version of LM324

The LM321 brings performance and economy to low power systems. With a high unity gain frequency and a specified 0.4-V/µs slew rate, the quiescent current is only 430-µA/amplifier (5 V). The input common mode range includes ground and therefore the device is able to operate in single supply applications as well as in dual supply applications. It is also capable of comfortably driving large capacitive loads.

The LM321 is available in the SOT-23 package. Overall the LM321 is a low power, wide supply range performance operational amplifier that can be designed into a wide range of applications at an economical price without sacrificing valuable board space.

The LM321 brings performance and economy to low power systems. With a high unity gain frequency and a specified 0.4-V/µs slew rate, the quiescent current is only 430-µA/amplifier (5 V). The input common mode range includes ground and therefore the device is able to operate in single supply applications as well as in dual supply applications. It is also capable of comfortably driving large capacitive loads.

The LM321 is available in the SOT-23 package. Overall the LM321 is a low power, wide supply range performance operational amplifier that can be designed into a wide range of applications at an economical price without sacrificing valuable board space.

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Technical documentation

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Type Title Date
* Data sheet LM321 Low Power Single Operational Amplifier datasheet (Rev. C) 10 Oct 2014
Application note Design Guidelines for Devices with LM324/LM358 Cores (Rev. A) 03 Aug 2021
Technical article What is an op amp? 21 Jan 2020
Technical article How to lay out a PCB for high-performance, low-side current-sensing designs 06 Feb 2018
Technical article Low-side current sensing for high-performance cost-sensitive applications 22 Jan 2018
Technical article Voltage and current sensing in HEV/EV applications 22 Nov 2017
E-book The Signal e-book: A compendium of blog posts on op amp design topics 28 Mar 2017
Application note AN-161 IC Voltage Reference has 1 ppm per Degree Drift (Rev. C) 06 May 2013
Application note Microvolt Comparator 02 Oct 2002

Design & development

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SOT-23 (DBV) 5 View options

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