LF444
- ¼ Supply Current of a LM148: 200 μA/Amplifier (max)
- Low Input Bias Current: 50 pA (max)
- High Gain Bandwidth: 1 MHz
- High Slew Rate: 1 V/μs
- Low Noise Voltage for Low Power 35 nV/√Hz
- Low Input Noise Current 0.01 pA/√Hz
- High Input Impedance: 1012Ω
- High Gain: 50k (min)
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The LF444 quad low power operational amplifier provides many of the same AC characteristics as the industry standard LM148 while greatly improving the DC characteristics of the LM148. The amplifier has the same bandwidth, slew rate, and gain (10 kΩ load) as the LM148 and only draws one fourth the supply current of the LM148. In addition the well matched high voltage JFET input devices of the LF444 reduce the input bias and offset currents by a factor of 10,000 over the LM148. The LF444 also has a very low equivalent input noise voltage for a low power amplifier.
The LF444 is pin compatible with the LM148 allowing an immediate 4 times reduction in power drain in many applications. The LF444 should be used wherever low power dissipation and good electrical characteristics are the major considerations.
技术文档
| 顶层文档 | 类型 | 标题 | 格式选项 | 下载最新的英语版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 数据表 | LF444 Quad Low Power JFET Input Operational Amplifier 数据表 (Rev. D) | 2013-3-27 | |||
| 电子书 | The Signal e-book: 有关运算放大器设计主题的博客文章汇编 | PDF | HTML | 英语版 | PDF | HTML | 2018-1-31 | |
| 应用手册 | AN-447 Protection Schemes for BI-FET Amplifiers and Switches | 2004-5-2 |
设计与开发
如需其他信息或资源，请点击以下任一标题进入详情页面查看（如有）。
AMP-PDK-EVM — 放大器高性能开发套件评估模块
放大器高性能开发套件 (PDK) 是一款用于测试常见运算放大器参数的评估模块 (EVM) 套件，与大多数运算放大器和比较器均兼容。该 EVM 套件提供了一个主板，主板上具有多个插槽式子卡选项以满足封装需求，使工程师能够快速评估和验证器件性能。
AMP-PDK-EVM 套件支持五种常用的业界通用封装，包括：
- D（SOIC-8 和 SOIC-14）
- PW (TSSOP-14)
- DGK (VSSOP-8)
- DBV（SOT23-5 和 SOT23-6）
- DCK（SC70-5 和 SC70-6）
| 封装 | 引脚 | CAD 符号、封装和 3D 模型 |
|---|---|---|
| PDIP (N) | 14 | Ultra Librarian |
| SOIC (D) | 14 | Ultra Librarian |