SLEXP8007A

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The SLEXP8007A is a 4-channel current sensor amplifier used in a broad range of applications and systems. It is designed to accurately measure current in a wide variety of current sensing applications. Its high accuracy, low offset, and excellent common-mode rejection ratio (CMRR) make it an ideal choice for multiple application fields.

The SLEXP8007A can measure currents from 8 mV to 36 mV (DC) with a typical accuracy of 0.2%. It is an integrated high-speed amplifier that can measure high-frequency waveforms in the kHz range with exceptional resolution. It provides very high accuracy, low offset, and excellent common-mode rejection ratio (CMRR). It also supports over-temperature protection when the temperature of the device exceeds 90°C, which helps protect the amplifier from damage.

The SLEXP8007A is widely used in power measurement applications, such as DC-to-DC converters, switch-mode power supplies, ups systems, motor drives, electronic load equipment, and other applications requiring current sensing. It is also used in metering and test equipment, heating systems, and many other industrial controls applications.

The working principle of the SLEXP8007A is based on the principle of Wheatstone bridge. It is constructed using four metal oxide thin film resistors and two thin film integrated circuits (ICs). The resistors are connected in a bridge formation, allowing the current to be measured by the differential voltage change across the bridge. The differential voltage is amplified by the two ICs, one of which is the amplifier and the other is the sensor IC. The amplified current is then fed to analog to digital (A/D) converters.

The SLEXP8007A offers an extremely low quiescent current of 0.1µA. This means that the current draw is extremely low, resulting in significant battery savings. Furthermore, the accuracy of the SLEXP8007A is very good over a wide temperature range, ranging from -20 to +85°C. This makes it suitable for various industrial applications.

The SLEXP8007A also offers good noise immunity and excellent rejection of EMI/RFI noise. This makes it suitable for applications that are exposed to strong electromagnetic fields, such as automotive, aerospace, and industrial applications. Furthermore, the SLEXP8007A is easy to interface with digital systems, enabling it to be used in modern digital systems as well.

In conclusion, the SLEXP8007A is a durable and highly accurate current sensor amplifier suitable for a wide range of applications. It has a very low quiescent current draw, making it suitable for battery-powered applications. It also has an impressive accuracy and offers good EMI/RFI noise rejection, making it suitable for applications where there is significant electromagnetic interference. Its Wheatstone bridge working principle also makes it easy to interface with digital systems.

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