BU21078MUV-E2

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BU21078MUV-E2 is a sensing switch IC for ultra-small size and low current consumption applications, such as wearable health devices and IoT applications. It is designed to provide functions such as air gesture control, door opening and closing detection, body position detection and text input device by detecting the presence of electromagnetism. With the BU21078MUV-E2, users can install a detection area of up to 5mm at an optimal distance of up to 10mm from the detection area to the circuit board.

BU21078MUV-E2 belongs to the category of interface - sensor and detector interface. It is a sensing switch IC for ultra-small size and low current consumption applications. The key feature of BU21078MUV-E2 is that it can detect objects up to 5mm with an optimal distance of up to 10mm from the detection area to the circuit board.

The working principle of BU21078MUV- E2 is based on an inductive conversion method, where an excitation coil (TX coil) and a receiving coil (RX coil) cooperate to realize an effective signal detection. The excitation coil generates a high frequency magnetic flux, and when a user approaches the detection area, the magnetic flux is cut off and generated a signal voltage at the receiving coil. The RX coil is connected to the output of the BU21078MUV-E2, and the interrupt is sent to the host.

The BU21078MUV-E2 is available in two connection modes, a UART mode and an I2C mode. In the UART mode, the BU21078MUV-E2 is connected directly to the host processor\'s UART port or a microcontroller\'s serial port, and then the interrupt signal is generated when the detection object approaches the detection area. The I2C is recommended when multiple devices need to be connected. In I2C mode, the device is connected to the I2C bus, allowing multiple devices to be connected to the same bus and sending interrupt signals to the host.

In addition, the BU21078MUV-E2 features patented advanced signal processing technology. The auto gain (AGC) control technology is adopted to optimize the detection range and increase the repeatability of the detection. The signal processing technology also provides a wide range of operation, near-field and far-field area, allowing the device to be used in a variety of applications.

The BU21078MUV-E2 provides users with a wide range of applications. It can be used for air gesture control, door opening/closing detection, body position detection, and text input device, etc. It is ideal for wearable health devices, IoT applications and automotive applications.

In conclusion, BU21078MUV-E2 is a sensing switch IC for ultra-small size and low current consumption applications. It is one of the products in the category of interface - sensor and detector interfaces. It can efficiently detect small-sized objects in the near-field and far-field range, and supports UART and I2C connection modes. It features patented advanced signal processing technology, allowing the device to be used in a variety of applications.

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