LMP8278Q-Q1
- TCVos ±15μV/°C Max
- CMRR 80 dB Min
- Input Offset Voltage ±2 mV max
- CMVR −2V to 40V
- Operating Ambient Temperature Range −40°C to 125°C
- Single Supply Operation
- Min / Max Limits 100% Tested unless Otherwise Noted
- LMP8278Q Available in Automotive AEC-Q100 Grade 1 Qualified Version
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The LMP8278 is a fixed 14x gain precision current sense amplifier. The part amplifies and filters small differential signals in the presence of high common mode voltages. The part operates from a single 5V supply voltage. With an input common mode voltage range from -2V to +28V the gain is very precise (±0.5%). The part can handle common mode voltages in the range -2V to +40V with relaxed specifications. The LMP8278 is a member of the Linear Monolithic Precision (LMP) family and is ideal for unidirectional current sensing applications. The parameter values that are shown in the Electrical Characteristics table are 100% tested and all bold values are also 100% tested over temperature, unless otherwise noted.
The part has a precise gain of 14x which is adequate in most targeted applications to drive an ADC to its full scale value. The fixed gain is achieved in two separate stages, a preamplifier with a gain of 7x and an output stage buffer amplifier with a gain of 2x. The connection between the two stages of the signal path is brought out on two pins to enable the possibility to create an additional filter network around the output buffer amplifier. These pins can also be used for alternative configurations with different gain as described in .
The LMP8278Q incorporates enhanced manufacturing and support processes for the automotive market, including defect detection methodologies. Reliability qualification is compliant with the requirements and temperature grades defined in the AEC Q100 standard.
技术文档
类型 | 项目标题 | 下载最新的英语版本 | 日期 | |||
---|---|---|---|---|---|---|
* | 数据表 | LMP8278Q High Mode, 14 x Gain, Precision Sensing Amplifier 数据表 (Rev. A) | 2013年 3月 22日 | |||
应用手册 | 将印刷电路板覆铜线迹用作电流检测 分流电阻器 | PDF | HTML | 下载英文版本 | PDF | HTML | 2022年 6月 8日 | |
技术文章 | Solving the multidecade current-measurement challenge in your 48-V BMS application | 2021年 6月 14日 | ||||
技术文章 | How current-sense amplifiers monitor satellite health | 2021年 2月 8日 | ||||
电子书 | Simplifying Current Sensing (Rev. A) | 2020年 1月 9日 | ||||
电子书 | 简化电流感应 (Rev. A) | 2020年 1月 9日 | ||||
技术文章 | A key to accurate system thermal management: monitoring both current flow and temperature | 2018年 10月 4日 | ||||
技术文章 | System trade-offs for high- and low-side current measurements | 2017年 6月 1日 | ||||
应用手册 | 适用于三相系统的低漂移低侧电流测量 (Rev. A) | 下载最新的英文版本 (Rev.B) | 2017年 1月 26日 | |||
EVM 用户指南 | AN-2223 LMP8278Q MSOP Evaluation Board User’s Manual (Rev. A) | 2013年 4月 26日 |
设计和开发
如需其他信息或资源,请查看下方列表,点击标题即可进入详情页面。
LMP8278MMEVAL — LMP8278MM 评估板
The LMP8278Q Evaluation Board is designed to evaluate the LMP8278Q current sense amplifier.
CS-AMPLIFIER-ERROR-TOOL — 电流感测放大器比较和误差工具
CIRCUIT060035 — 具有窗口比较器的双向电流感应电路
CIRCUIT060037 — 精密过流锁存电路
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TINA-TI 安装需要大约 500MB。直接安装,如果想卸载也很容易。我们相信您肯定会爱不释手。
TINA 是德州仪器 (TI) 专有的 DesignSoft 产品。该免费版本具有完整的功能,但不支持完整版 TINA 所提供的某些其他功能。
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TIDA-00302 — 具有瞬态鲁棒性的电流分流监控器参考设计
此外,还采用外部保护电路来提供浪涌保护和快速瞬变保护并展示基于 IEC61000-4-4 和 IEC61000-4-5 的不同抗扰度。
封装 | 引脚数 | 下载 |
---|---|---|
VSSOP (DGK) | 8 | 了解详情 |
订购和质量
- RoHS
- REACH
- 器件标识
- 引脚镀层/焊球材料
- MSL 等级/回流焊峰值温度
- MTBF/时基故障估算
- 材料成分
- 认证摘要
- 持续可靠性监测