The MC13111BFTA, manufactured by NXP Semiconductors (formerly Freescale), is a single-chip UHF transmitter designed for Remote Keyless Entry (RKE) systems and other short-range wireless control applications. Operating in the 300 to 450 MHz frequency range, it provides a cost-effective and low-power solution for unidirectional wireless communication.

Applications

• Remote Keyless Entry (RKE): Used in car key fobs to remotely lock, unlock, and start vehicles.
• Remote Control Systems: Suitable for garage door openers, gate controls, and other access control systems.
• Alarm Systems: Integrated into wireless security systems to transmit alarm signals to a central monitoring unit.
• Tire Pressure Monitoring Systems (TPMS): Used to transmit tire pressure and temperature information from sensors to the vehicle's onboard computer.
• General Purpose RF Transmitters: Suitable for various applications requiring short-range wireless data transmission in the UHF band.

Features

• Frequency Range: Operates within the 300 to 450 MHz UHF frequency range, supporting multiple frequency bands.
• Low Power Consumption: Designed for low-power operation to maximize battery life in portable devices.
• ASK/FSK Modulation: Supports both Amplitude Shift Keying (ASK) and Frequency Shift Keying (FSK) modulation schemes.
• On-Chip PLL: Integrated Phase-Locked Loop (PLL) provides stable and accurate frequency synthesis.
• Programmable Output Power: Adjustable output power allows for optimizing range and minimizing power consumption.
• Low External Component Count: High level of integration minimizes the need for external components, reducing cost and board space.
• Wake-up Timer: Integrated wake-up timer supports periodic operation for further power savings.
• Data Rate Flexibility: Supports various data rates to accommodate different application requirements.

Benefits

• Extended Battery Life: Low power consumption extends the operational life of battery-powered remote controls and sensors.
• Cost-Effective Solution: High integration reduces component count and overall system cost.
• Simplified System Design: Minimal external components streamline the design process and reduce development time.
• Reliable Communication: Stable frequency synthesis and robust modulation schemes ensure reliable data transmission.
• Flexible Modulation Options: Supports both ASK and FSK modulation, allowing selection of the optimal scheme for the application.
• Compact Size: Small package size enables integration into space-constrained applications.

Additional Details

The MC13111BFTA typically operates with a supply voltage range of 2.0 V to 3.6 V. It uses ASK or FSK modulation. The output power is programmable, offering flexibility in range and power consumption optimization. The device incorporates a wake-up timer, supporting periodic operation to conserve battery life. The package is typically a small TSSOP or similar surface-mount package. It utilizes unidirectional transmission, meaning it's designed to only transmit data and not receive it.