Maxim Integrated Products introduces the MAX1441, a fully integrated, 2-channel, proximity detection and touch sensor IC for automotive passive remote access control (PRKE) and user control systems. This component provides a complete, stand-alone solution that reduces system size and cost by at least 30% compared to the nearest competitor. Features of the MAX1441 include low-power operation (current <100uA at 14V), far-reaching detection range, built-in power conditioning circuitry, overvoltage and reverse voltage protection, and spread spectrum immunity. In addition, the component's built-in MAXQ microcontroller provides plenty of storage space to support user-defined algorithms, making it easy for designers to optimize system performance. Currently, touch-enabled interfaces have become a value-added feature of high-end cars and today's economy cars. For example, the passive access control system using capacitive detection can greatly improve the convenience, allowing the driver to lock/unlock without having to remove the key from the bag. But designers of such systems face a range of challenges, including meeting the demanding power and cost budgets of automotive systems, and programming microcontrollers to meet specific application environment requirements. Proximity detection/touch sensor systems typically use an 8-bit general purpose microcontroller that works with the ADC and external discrete components to allow programming of special features such as diagnostics, offset tracking, and communication protocols. It is also possible to use components with a dedicated detection algorithm, without the need for user programming settings, so that it is not necessary to introduce user-defined functions. The MAX1441 provides a complete proximity detection/touch sensor solution with a single IC. The components integrate high-sensitivity detection circuitry, embedded MAXQ microcontrollers, power and protection features, and I/O interfaces. This integrated solution requires only five passive components to build a capacitive sensing circuit. In contrast, the closest competing IC requires 16 passive components and an expensive high-voltage LDO regulator. Maxim's solution saves system designers at least 30% board space and solution cost. In addition to saving space and cost, the MAX1441 offers superior detection performance and flexibility to customize system functions. The advantages of farther proximity detection, resistance to rain and environmental changes, and reliable detection in the presence of gloves will provide an end user experience. At the same time, Maxim's advanced solutions will also bring many advantages to system designers. The unique features of the component include: the active protection architecture protects the detection electrode from the source of interference without adding parasitic capacitance; spread spectrum modulation can effectively reduce the effects of electromagnetic radiation; sufficient memory resources can handle user-defined signals and Dedicated algorithms to optimize system performance. In summary, these features provide designers with the most advanced capacitive sensing solutions on the market today. The MAX1441 operates from a 5V to 28V supply voltage with overvoltage protection up to 45V and -12V reverse voltage protection (with external diodes). The components are available in a 20-pin TSSOP package and operate over the -40°C to +105°CAEC-Q100 Level 2 temperature range. ceiling fan on wall,wall ceiling fan,wall Ceiling Fan With Light ceiling fan on wall,wall ceiling fan,wall ceiling fan with light JIANGMEN ESCLIGHTING TECHNOLOGY LIMITED , https://www.esclightingfan.com
Maxim pushes PREK system proximity detection / touch sensor