MPR084QR2

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The MPR084QR2 is an efficient capacitive touch controller designed to recognize light touches. It is designed to be deployed in applications requiring limited touch areas such as industrial and automotive control surfaces, musical instruments, medical equipment and other sophisticated applications where a touch is required. The MPR084QR2 offers a compact form factor and low power consumption with a rapid response time.

The MPR084QR2 features a built-in charge pump allowing multiplexed touch buttons or matrices to be connected in parallel or series. It also provides a low-power shutdown mode to further reduce power consumption during times when the device is not in use. The MPR084QR2 offers excellent performance in noisy environments thanks to its 5 kHz internal oscillator, which optimizes the frequency for noise immunity. Its 10-bit programmable sensitivity ensures consistent responses over a wide range of touch conditions.

The MPR084QR2 is a versatile solution that is well-suited for a wide range of capacitive touch applications. Its built-in charge pump provides power savings and supports up to 8 keys or 54 channels in a standard configuration. The MPR084QR2 is configurable for both series and parallel touch keys, making it ideal for applications with limited board space. Its user-programmable sensitivity provides flexible tuning capability to meet the requirements of most applications.

The MPR084QR2 is based on the same capacitive touch sensing principle as other capacitive touch controllers. A capacitive touch sensor typically consists of a sensing pad connected to a drive circuit. A reference voltage is supplied to the sensing pad and when something, like a finger, touches the pad, a change in the capacitance occurs. This change in capacitance is detected by the sensing circuit which in turn triggers a logic output. The drive circuit provides the necessary conditions for a stable sensitivity by modulating the oscillator frequency, providing the optimal signal-to-noise ratio and providing a rapid response time.

The MPR084QR2 can be used as a standalone solution or combined with a microcontroller to further enhance the performance of capacitive touch applications. When combined with a microcontroller, the MPR084QR2 can be used to detect a variety of sizes, shapes and objects in addition to fingers. The MPR084QR2 can also be used to accurately detect a wide range of temperature changes and implement intelligent temperature compensation for reliable operation in extreme conditions.

The MPR084QR2 is a cost-effective capacitive touch controller solution suitable for a variety of applications. Its low power consumption, high noise immunity and versatile sensing capabilities make it an excellent choice for touch and gesture-based solutions. The MPR084QR2 also offers a high degree of precision and a quick response time, making it a great solution for demanding and highly precise applications.

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