LF444

` 1⁄4 supply current of a LM148: 200 A/Amplifier (max)
` Low input bias current: 50 pA (max)
` High gain bandwidth: 1 MHz
` High slew rate: 1 V/s
` Low noise voltage for low power

` Low input noise current

` High input impedance: 10<sup>12</sup>
` High gain V_O = ±10V, R_L = 10k: 50k (min)

If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications.
LF444ALF444
Supply Voltage ±22V±18V
Differential Input Voltage ±38V±30V
Input Voltage Range ±19V ±15V
(Note 1)
Output Short Circuit Continuous Continuous
Duration (Note 2)
D Package N, M Packages
Power Dissipation 900 mW 670 mW
(Notes 3, 9)
Tj max 150 115
/A (Typical) 100/W 85/W

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 kW 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.