LMP7312
- Typical Values, TA = 25°C, V+=5V, V-=0V.
- Gain Bandwidth 1 MHz
- Input Voltage Range (G= 0.096 V/V) -15V to +15V
- Core Op-Amp Input Offset Voltage 100 µV (Max)
- Supply Current 2 mA (Max)
- Gain (Attenuation Mode) 0.096 V/V, 0.192 V/V0.384 V/V, 0.768 V/V
- Gain (Amplification Mode) 1 V/V, 2 V/V
- Gain Error 0.035% (Max)
- Core Op-Amp PSRR 90 dB (Min)
- CMRR 80 dB (min)
- Adjustable Output Common Mode 1V to 4V
- Temperature Range −40 to 125°C
- Package 14-Pin SOIC
All trademarks are the property of their respective owners.
The LMP7312 is a digitally programmable variable gain amplifier/attenuator. Its wide input voltage range and superior precision make it a prime choice for applications requiring high accuracy such as data acquisition systems for IO modules in programmable logic control (PLC). The LMP7312 provides a differential output to maximize dynamic range and signal to noise ratio, thereby reducing the overall system error. It can also be configured to handle single ended input data converters by means of the VOCM pin (see for details). The inputs of LMP7312 can be configured in attenuation mode to handle large input signals of up to +/- 15V, as well as in amplification mode to handle current loops of 0-20mA and 4-20mA.The LMP7312 is equipped with a null switch to evaluate the offset of the internal amplifier. A ensured 0.035% maximum gain error (for all gains) and a maximum gain drift of 5ppm over the extended industrial temperature range (-40° to 125°C) make the LMP7312 very attractive for high precision systems even under harsh conditions. A low input offset voltage of 100µV and low voltage noise of 3µVpp give the LMP7312 a superior performance. The LMP7312 is fully specified from -40° to 125°C and is available in SOIC-14 package.
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 | Precision SPI-Programmable AFE with Differential/Single-Ended Input/Output 数据表 (Rev. B) | 2013-3-22 | |||
| 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 |
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 |
|---|---|---|
| SOIC (D) | 14 | Ultra Librarian |