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LM348M 参数 Datasheet PDF下载

LM348M图片预览
型号: LM348M
PDF下载: 下载PDF文件 查看货源
内容描述: 741四运算放大器LM149宽带失代偿(AV MIN = 5 ) [Quad 741 Op Amps LM149 Wide Band Decompensated (AV MIN = 5)]
分类和应用: 运算放大器
文件页数/大小: 15 页 / 387 K
品牌: NSC [ NATIONAL SEMICONDUCTOR ]
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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 — 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
© 2003 National Semiconductor Corporation
DS007786
www.national.com