1FEATURES

23• ¼ Supply Current of a LM148: 200 μA/Amplifier

(max)

• Low Input Bias Current: 50 pA (max)

• 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: 50k (min)

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.