SNOSD59 June   2017

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 Absolute Maximum Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 DC Electrical Characteristics
    6. 6.6 AC Electrical Characteristics
    7. 6.7 Typical Characteristics
      1. 6.7.1 Pulse Response
  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 Input and Output Stage
  8. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Applications
      1. 8.2.1 Battery Powered Strip Chart Preamplifier
        1. 8.2.1.1 Design Requirements
        2. 8.2.1.2 Detailed Design Procedure
        3. 8.2.1.3 Application Curves
      2. 8.2.2 "No FET" Low Power V to F Converter
        1. 8.2.2.1 Design Requirements
        2. 8.2.2.2 Detailed Design Procedure
        3. 8.2.2.3 Application Curves
      3. 8.2.3 High Efficiency Crystal Oven Controller
        1. 8.2.3.1 Design Requirements
        2. 8.2.3.2 Detailed Design Procedure
      4. 8.2.4 Conventional Log Amplifier
        1. 8.2.4.1 Design Requirements
        2. 8.2.4.2 Detailed Design Procedure
      5. 8.2.5 Unconventional Log Amplifier
        1. 8.2.5.1 Design Requirements
        2. 8.2.5.2 Detailed Design Procedure
  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 Receiving Notification of Documentation Updates
    2. 11.2 Community Resources
    3. 11.3 Trademarks
    4. 11.4 Electrostatic Discharge Caution
    5. 11.5 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

Package Options

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

1 Features

  • 1/10 Supply Current of a LM1458: 400 μA (Max)
  • Low Input Bias Current: 50 pA (Max)
  • Low Input Offset Voltage: 1 mV (Max)
  • Low Input Offset Voltage Drift: 7 μV/°C (Typ)
  • High Gain Bandwidth: 1 MHz
  • High Slew Rate: 1 V/μs
  • Low Noise Voltage for Low Power: 35 nV/√Hz
  • Low Input Noise Current: 0.01 pA/√Hz
  • High Input Impedance: 1012Ω
  • High Gain VO = ±10V, RL = 10k: 50k (Min)

2 Applications

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

3 Description

The LF442-MIL dual low power operational amplifiers provide many of the same AC characteristics as the industry standard LM1458 while greatly improving the DC characteristics of the LM1458. The amplifiers have the same bandwidth, slew rate, and gain (10 kΩ load) as the LM1458 and only draw one tenth the supply current of the LM1458. In addition the well matched high voltage JFET input devices of the LF442-MIL reduce the input bias and offset currents by a factor of 10,000 over the LM1458. A combination of careful layout design and internal trimming ensures very low input offset voltage and voltage drift. The LF442-MIL also has a very low equivalent input noise voltage for a low power amplifier.

The LF442-MIL is pin compatible with the LM1458 allowing an immediate 10 times reduction in power drain in many applications. The LF442-MIL should be used where low power dissipation and good electrical characteristics are the major considerations.

Device Information(1)

PART NUMBER PACKAGE BODY SIZE (NOM)
LF442-MILACN PDIP (8) 9.59 mm × 6.35 mm
LF442-MILAMH TO-99 (8) 8.96 mm Diameter
  1. For all available packages, see the orderable addendum at the end of the data sheet.

Inverting Amplifier

LM442-MIL 2317132.gif

4 Revision History

DATE REVISION NOTES
June 2017 * Initial release.