LF444QML Quad Low Power JFET Input Operational Amplifier | TI.com

LF444QML (ACTIVE)

Quad Low Power JFET Input Operational Amplifier

 

Description

The LF444 quad low power operational amplifier provides many of the same AC characteristics as the industry standard LM148 while greatly improving the DC characteristics of the LM148. The amplifier has the same bandwidth, slew rate, and gain (10 kΩ load) as the LM148 and only draws one fourth the supply current of the LM148. In addition the well matched high voltage JFET input devices of the LF444 reduce the input bias and offset currents by a factor of 10,000 over the LM148. The LF444 also has a very low equivalent input noise voltage for a low power amplifier.

The LF444 is pin compatible with the LM148 allowing an immediate 4 times reduction in power drain in many applications. The LF444 should be used wherever low power dissipation and good electrical characteristics are the major considerations.


Features

  • ¼ supply current of a LM148:  250 μA/Amplifier (max)
  • Low input bias current: 100 pA (max)
  • High gain bandwidth: 1 MHz
  • High slew rate: 1 V/μs
  • Low noise voltage for low power 
  • Low input noise current 
  • High input impedance: 10 12Ω
  • High gain, VO = ±10V, RL = 10KΩ: 25K (min)

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    Parametrics Compare all products in General-purpose op amps

     
    Number of channels (#)
    Total Supply Voltage (Min) (+5V=5, +/-5V=10)
    GBW (Typ) (MHz)
    Slew Rate (Typ) (V/us)
    Rail-to-rail
    Vos (offset voltage @ 25 C) (Max) (mV)
    Iq per channel (Typ) (mA)
    Vn at 1 kHz (Typ) (nV/rtHz)
    Rating
    Operating temperature range (C)
    Package Group
    Package size: mm2:W x L (PKG)
    Offset drift (Typ) (uV/C)
    Features
    Input bias current (Max) (pA)
    CMRR (Typ) (dB)
    Output current (Typ) (mA)
    Architecture
    LF444QML
    4    
    6    
    1    
    1    
    No    
    10    
    0.15    
    35    
    Military    
    -55 to 125    
    CDIP SB | 14    
    See datasheet (CDIP SB)    
    10    
       
    100    
    100    
    20    
    FET