LM248J Datasheet

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LM148/LM248/LM348 Series Quad 741 Op Amp

November 2003

LM148/LM248/LM348

Quad 741 Op Amps

General Description

The LM148 series is a true quad 741. It consists of four

independent, high gain, internally compensated, low power

operational amplifiers which have been designed to provide

functional characteristics identical to those of the familiar

741 operational amplifier. In addition the total supply current

for all four amplifiers is comparable to the supply current of a

single 741 type op amp. Other features include input offset

currents and input bias current which are much less than

those of a standard 741. Also, excellent isolation between

amplifiers has been achieved by independently biasing each

amplifier and using layout techniques which minimize ther-

mal coupling.

The LM148 can be used anywhere multiple 741 or 1558 type

amplifiers are being used and in applications where amplifier

matching or high packing density is required. For lower

power refer to LF444.

Features

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741 op amp operating characteristics

Class AB output stage 鈥?no crossover distortion

Pin compatible with the LM124

Overload protection for inputs and outputs

Low supply current drain:

0.6 mA/Amplifier

Low input offset voltage:

1 mV

Low input offset current:

4 nA

Low input bias current

30 nA

High degree of isolation between amplifiers:

120 dB

Gain bandwidth product

LM148 (unity gain):

1.0 MHz

Schematic Diagram

00778601

* 1 pF in the LM149

漏 2003 National Semiconductor Corporation

DS007786

www.national.com

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