LM149

更新时间： 2024-09-12 22:51:59

品牌	Logo	应用领域
美国国家半导体 - NSC		运算放大器
页数	文件大小	规格书
15页	387K
描述
Quad 741 Op Amps LM149 Wide Band Decompensated (AV MIN = 5)

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LM149 数据手册

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.

Features

n 741 op amp operating characteristics

n Class AB output stage—no crossover distortion

n Pin compatible with the LM124

n Overload protection for inputs and outputs

n Low supply current drain:

n Low input offset voltage:

n Low input offset current:

n Low input bias current

n High degree of isolation between amplifiers:

n Gain bandwidth product

0.6 mA/Amplifier

1 mV

4 nA

30 nA

120 dB

LM148 (unity gain):

1.0 MHz

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.

Schematic Diagram

00778601

* 1 pF in the LM149

DS007786

www.national.com

12 3 4 5 6 7...15

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