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

LF444QML (ACTIVE) Quad Low Power JFET Input Operational Amplifier

Quad Low Power JFET Input Operational Amplifier - LF444QML


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.


  • 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)

  • Parametrics

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    Part number Order Number of channels (#) Total supply voltage (Min) (+5V=5, +/-5V=10) Total supply voltage (Max) (+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 Order now 4     6     18     1     1     No     10     0.15     35     Military     -55 to 125     CDIP SB | 14     See datasheet (CDIP SB)     10         100     100     20     FET