SNOSBH7F April 1999  – September 2014 LF412-N

PRODUCTION DATA. 

  1. Features
  2. Applications
  3. Description
  4. Revision History
  5. Pin Configuration and Functions
  6. Specifications
    1. 6.1Absolute Maximum Ratings
    2. 6.2Handling Ratings
    3. 6.3Recommended Operating Conditions
    4. 6.4Thermal Information
    5. 6.5DC Electrical Characteristics
    6. 6.6AC Electrical Characteristics
    7. 6.7Typical Characteristics
  7. Detailed Description
    1. 7.1Overview
    2. 7.2Functional Block Diagram
    3. 7.3Feature Description
    4. 7.4Device Functional Modes
      1. 7.4.1Input and Output Stage
  8. Application and Implementation
    1. 8.1Application Information
    2. 8.2Typical Application
      1. 8.2.1Design Requirements
      2. 8.2.2Detailed Design Procedure
      3. 8.2.3Application Curves
  9. Power Supply Recommendations
  10. 10Layout
    1. 10.1Layout Guidelines
    2. 10.2Layout Example
  11. 11Device and Documentation Support
    1. 11.1Trademarks
    2. 11.2Electrostatic Discharge Caution
    3. 11.3Glossary
  12. 12Mechanical, Packaging, and Orderable Information

1 Features

  • Internally Trimmed Offset Voltage: 1 mV (Max)
  • Input Offset Voltage Drift: 7 µV/°C (Typ)
  • Low Input Bias Current: 50 pA
  • Low Input Noise Current: 0.01 pA / √Hz
  • Wide Gain Bandwidth: 3 MHz (Min)
  • High Slew Rate: 10V/µs (Min)
  • Low Supply Current: 1.8 mA/Amplifier
  • High Input Impedance: 1012Ω
  • Low Total Harmonic Distortion: ≤0.02%
  • Low 1/f Noise Corner: 50 Hz
  • Fast Settling Time to 0.01%: 2 µs

2 Applications

  • High Speed Integrators
  • Fast D/A Converters
  • Sample and Hold Circuits

3 Description

These devices are low cost, high speed, JFET input operational amplifiers with very low input offset voltage and input offset voltage drift. They require low supply current yet maintain a large gain bandwidth product and fast slew rate. In addition, well matched high voltage JFET input devices provide very low input bias and offset currents. The LF412-N dual is pin compatible with the LM1558, allowing designers to immediately upgrade the overall performance of existing designs.

These amplifiers may be used in applications such as high speed integrators, fast D/A converters, sample and hold circuits and many other circuits requiring low input offset voltage and drift, low input bias current, high input impedance, high slew rate and wide bandwidth.

Device Information(1)

PART NUMBERPACKAGEBODY SIZE (NOM)
LF412ACNPDIP9.59 mm x 6.35 mm
LF412CNPDIP9.59 mm x 6.35 mm
LF412MHTO9.14 mm diameter
  1. For all available packages, see the orderable addendum at the end of the datasheet.

Inverting Amplifier

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