LMP8278Q-Q1 - LMP8278Q 高模式 14 x 增益精密感应放大器

LMP8278Q-Q1是TI德州仪器公司的一款电流分流模拟输出产品，LMP8278Q-Q1是LMP8278Q 高模式 14 x 增益精密感应放大器，本站介绍了LMP8278Q-Q1的封装应用图解、特点和优点、功能等，并给出了与LMP8278Q-Q1相关的TI元器件型号供参考。

LMP8278Q-Q1 - LMP8278Q 高模式 14 x 增益精密感应放大器 - 电流分流模拟输出 - 电流感应放大器 - 德州仪器

产品描述

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.

产品特性

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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