Product Summary

The LF444CN is a quad low power operational amplifier. The LF444CN 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 LF444CN reduce the input bias and offset currents by a factor of 10,000 over the LM148. The LF444CN also has a very low equivalent input noise voltage for a low power amplifier. The LF444CN is pin compatible with the LM148 allowing an immediate 4 times reduction in power drain in many applications. The LF444CN should be used wherever low power dissipation and good electrical characteristics are the major considerations.

Parametrics

LF444CN absolute maximum ratings: (1)Supply Voltage: ±18V; (2)Differential Input Voltage: ±30V; (3)Input Voltage Range: ±15V; (4)Output Short Circuit Duration: Continuous; (5)Power Dissipation: 670 mW; (6)Tj max: 115℃; (7)θjA (Typical): 85℃/W; (8)Storage Temperature Range: -65℃ ≤ TA ≤ 150℃; (9)ESD Tolerance: Rating to be determined; (10)Soldering Information Dual-In-Line Packages (Soldering, 10 sec.): 260℃; (11)Small Outline Package Vapor Phase (60 sec.): 215℃; (12)Infrared (15 sec.): 220℃.

Features

LF444CN features: (1)1.4 supply current of a LM148: 200 μA/Amplifier (max); (2)Low input bias current: 50 pA (max); (3)High gain bandwidth: 1 MHz; (4)High slew rate: 1 V/μs; (5)Low noise voltage for low power: 35nV/√Hz; (6)Low input noise current: 0.01pA/√Hz; (7)High input impedance: 10Ω; (8)High gain VO = ±10V, RL = 10k: 50k (min).

Diagrams

LF444CN block diagram

Image Part No Mfg Description Data Sheet Download Pricing
(USD)
Quantity
LF444CN
LF444CN

National Semiconductor (TI)

Operational Amplifiers - Op Amps

Data Sheet

0-575: $0.61
575-1000: $0.47
1000-2500: $0.44
2500-5000: $0.42
LF444CN/NOPB
LF444CN/NOPB

National Semiconductor (TI)

Operational Amplifiers - Op Amps QUAD LOW PWR JFET IN OP AMP

Data Sheet

0-1: $1.00
1-25: $0.80
25-100: $0.73
100-250: $0.64