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LM12CL 数据表(PDF) 4 Page - National Semiconductor (TI) |
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LM12CL 数据表(HTML) 4 Page - National Semiconductor (TI) |
4 / 14 page Typical Performance Characteristics (Continued) Application Information GENERAL Twenty five years ago the operational amplifier was a spe- cialized design tool used primarily for analog computation. However, the availability of low cost IC op amps in the late 1960’s prompted their use in rather mundane applications, replacing a few discrete components. Once a few basic prin- ciples are mastered, op amps can be used to give exception- ally good results in a wide range of applications while mini- mizing both cost and design effort. The availability of a monolithic power op amp now promises to extend these advantages to high-power designs. Some conventional applications are given here to illustrate op amp design principles as they relate to power circuitry. The inevi- table fall in prices, as the economies of volume production are realized, will prompt their use in applications that might now seem trivial. Replacing single power transistors with an op amp will become economical because of improved per- formance, simplification of attendant circuitry, vastly im- proved fault protection, greater reliability and the reduction of design time. Power op amps introduce new factors into the design equa- tion. With current transients above 10A, both the inductance and resistance of wire interconnects become important in a number of ways. Further, power ratings are a crucial factor in determining performance. But the power capability of the IC cannot be realized unless it is properly mounted to an ad- equate heat sink. Thus, thermal design is of major impor- tance with power op amps. This application summary starts off by identifying the origin of strange problems observed while using the LM12 in a Frequency Response DS008704-43 Output Impedance DS008704-44 Power Supply Rejection DS008704-45 Input Bias Current DS008704-46 Input Noise Voltage DS008704-47 Common Mode Rejection DS008704-48 Supply Current DS008704-49 Supply Current DS008704-50 Cross-Supply Current DS008704-51 www.national.com 4 |
类似零件编号 - LM12CL |
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类似说明 - LM12CL |
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