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 | 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 | 英语版 | PDF | HTML | 2022年 6月 8日 | |
电子书 | An Engineer's Guide to Current Sensing (Rev. B) | 2022年 4月 12日 | ||||
电子书 | 简化电流感应 (Rev. A) | 2020年 1月 9日 | ||||
应用简报 | 适用于三相系统的低漂移低侧电流测量 (Rev. A) | 最新英语版本 (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,请点击以下任一标题进入详情页面查看(如有)。
LMP8278MMEVAL — LMP8278MM 评估板
The LMP8278Q Evaluation Board is designed to evaluate the LMP8278Q current sense amplifier.
CIRCUIT060035 — 具有窗口比较器的双向电流检测电路
CIRCUIT060037 — 精密过流锁存电路
PSPICE-FOR-TI — 适用于 TI 设计和模拟工具的 PSpice®
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TINA-TI — 基于 SPICE 的模拟仿真程序
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 是米6体育平台手机版_好二三四 (TI) 专有的 DesignSoft 米6体育平台手机版_好二三四。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 | CAD 符号、封装和 3D 模型 |
---|---|---|
VSSOP (DGK) | 8 | Ultra Librarian |
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
- 鉴定摘要
- 持续可靠性监测
- 制造厂地点
- 封装厂地点