LF442MH/883

LF442MH/883 Description

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LF442MH/883 Datasheet (PDF)

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LF442MH/883 Features

• 1/10 supply current of a LM1458: 400 µA (max)
• Low input bias current: 50 pA (max)
• Low input offset voltage: 1 mV (max)
• Low input offset voltage drift: 10 µV/°C (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: 10¹²
• High gain V_O = ±10V, R_L = 10k: 50k (min)

LF442MH/883 Description

The LF442 dual low power operational amplifiers provide many of the same AC characteristics as the industry standard LM1458 while greatly improving the DC characteristics of the LM1458. The amplifiers have the same bandwidth, slew rate, and gain (10 k load) as the LM1458 and only draw one tenth the supply current of the LM1458. In addition the well matched high voltage JFET input devices of the LF442 reduce the input bias and offset currents by a factor of 10,000 over the LM1458. A combination of careful layout design and internal trimming guarantees very low input offset voltage and voltage drift. The LF442 also has a very low equivalent input noise voltage for a low power amplifier.

The LF442 is pin compatible with the LM1458 allowing an immediate 10 times reduction in power drain in many applications. The LF442 should be used where low power dissipation and good electrical characteristics are the major considerations.

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