SNOSAW8E May   2008  – September 2015 LM7321 , LM7322

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Description continued
  6. 6 Pin Configuration and Functions
  7. 7 Specifications
    1. 7.1 Absolute Maximum Ratings
    2. 7.2 ESD Ratings
    3. 7.3 Recommended Operating Conditions
    4. 7.4 Thermal Information
    5. 7.5 2.7-V Electrical Characteristics
    6. 7.6 ±5-V Electrical Characteristics
    7. 7.7 ±15-V Electrical Characteristics
    8. 7.8 Typical Characteristics
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Output Short Circuit Current and Dissipation Issues
      2. 8.3.2 Estimating the Output Voltage Swing
    4. 8.4 Device Functional Modes
      1. 8.4.1 Driving Capacitive Loads
  9. 9 Application and Implementation
    1. 9.1 Application Information
      1. 9.1.1 Similar High-Output Devices
      2. 9.1.2 Other High Performance SOT-23 Ampliers
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
      3. 9.2.3 Application Curve
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  12. 12Device and Documentation Support
    1. 12.1 Related Links
    2. 12.2 Community Resources
    3. 12.3 Trademarks
    4. 12.4 Electrostatic Discharge Caution
    5. 12.5 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

Package Options

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

1 Features

  • (VS = ±15, TA = 25°C, Typical Values Unless Specified.)
  • Wide Supply Voltage Range 2.5 V to 32 V
  • Output Current +65 mA/−100 mA
  • Gain Bandwidth Product 20 MHz
  • Slew Rate 18 V/µs
  • Capacitive Load Tolerance Unlimited
  • Input Common-Mode Voltage 0.3-V Beyond Rails
  • Input Voltage Noise 15 nV/√Hz
  • Input Current Noise 1.3 pA/√Hz
  • Supply Current/Channel 1.1 mA
  • Distortion THD+Noise −86 dB
  • Temperature Range −40°C to 125°C
  • Tested at −40°C, 25°C and 125°C at 2.7 V, ±5 V, ±15 V.
  • LM732xx are Automotive Grade Products that are AEC-Q100 Grade 1 Qualified.

2 Applications

  • Driving MOSFETs and Power Transistors
  • Capacitive Proximity Sensors
  • Driving Analog Optocouplers
  • High-Side Sensing
  • Below Ground Current Sensing
  • Photodiode Biasing
  • Driving Varactor Diodes in PLLs
  • Wide Voltage Range Power supplies
  • Automotive
  • International Power Supplies

3 Description

The LM732xx devices are rail-to-rail input and output amplifiers with wide operating voltages and high-output currents. The LM732xx family is efficient, achieving 18-V/µs slew rate and 20-MHz unity gain bandwidth while requiring only 1 mA of supply current per op amp. The LM732xx device performance is fully specified for operation at 2.7 V, ±5 V and ±15 V.

The LM732xx devices are designed to drive unlimited capacitive loads without oscillations. All LM7321x and LM7322x parts are tested at −40°C, 125°C, and 25°C, with modern automatic test equipment. High performance from −40°C to 125°C, detailed specifications, and extensive testing makes them suitable for industrial, automotive, and communications applications.

Greater than rail-to-rail input common-mode voltage range with 50 dB of common-mode rejection across this wide voltage range, allows both high-side and low-side sensing. Most device parameters are insensitive to power supply voltage, and this makes the parts easier to use where supply voltage may vary, such as automotive electrical systems and battery powered equipment. These amplifiers have true rail-to-rail output and can supply a respectable amount of current (15 mA) with minimal head- room from either rail (300 mV) at low distortion (0.05% THD+Noise).

Device Information(1)

PART NUMBER PACKAGE BODY SIZE (NOM)
LM7321
LM7322		 SOIC (8) 4.90 mm × 3.91 mm
SOT (5) 2.90 mm × 1.60 mm
LM7322 VSSOP (8) 3.00 mm × 3.00 mm
  1. For all available packages, see the orderable addendum at the end of the data sheet.

Output Swing vs. Sourcing Current

LM7321 LM7322 20205736.gif

Large Signal Step Response

LM7321 LM7322 20205749.gif