SNOS935C February   2001  – December 2014 LM321

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
  6. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Electrical Characteristics
    6. 6.6 Typical Characteristics
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
    4. 7.4 Device Functional Modes
      1. 7.4.1 Common-Mode Voltage Range
  8. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Applications
      1. 8.2.1 Noninverting DC Gain (0-V Input = 0-V Output)
        1. 8.2.1.1 Design Requirements
        2. 8.2.1.2 Detailed Design Procedure
        3. 8.2.1.3 Application Curve
      2. 8.2.2 DC Summing Amplifier (VIN's ≥ 0 VDC and VO ≥ VDC)
      3. 8.2.3 Amplitude Modulator Circuit
      4. 8.2.4 Power Amplifier
      5. 8.2.5 LED Driver
      6. 8.2.6 Fixed Current Sources
      7. 8.2.7 Lamp Driver
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  11. 11Device and Documentation Support
    1. 11.1 Trademarks
    2. 11.2 Electrostatic Discharge Caution
    3. 11.3 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

1 Features

  • (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

2 Applications

  • Chargers
  • Power Supplies
  • Industrial: Controls, Instruments
  • Desktops
  • Communications Infrastructure

3 Description

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.

Device Information(1)

PART NUMBER PACKAGE BODY SIZE (NOM)
LM321 SOT (5) 2.90 mm × 1.60 mm
  1. For all available packages, see the orderable addendum at the end of the datasheet.

Simplified Schematic

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