MICROCHIP MICRF112YMM-TR

The MICRF112 is a high-performance, easy to use, true “Data-In, RF-Out,” ASK/FSK, phase-locked loop (PLL) based, transmitter IC for applications in the 300MHz to 450MHz frequency range. These applications include remote keyless entry (RKE) and tire pressure monitoring (TPMS). The device needs only a low-cost crystal to precisely set the desired RF frequency, and a few external components for matching the power amplifier output to the antenna. The MICRF112 operates over the 1.8V to 3.6V operating range and delivers +10dBm (CW) output power into a 50Ω load, while consuming 11.5mA of supply current from a 3.0V power supply. In ASK mode, the device consumes 6.9mA of supply current at a data rate of 1kbps (Manchester 50%). It features a low-power shutdown mode in which the device typically consumes 50nA of supply current. This makes it an ideal solution for battery powered applications. The MICRF112 is rated for the -40°C to +125°C temperature range, and is available in 10-pin MSOP and 10-pin Ultra-Thin DFN packages. For automotive applications, where AEC-Q100 qualification is required, consider the MAQRF112. For ASK-only applications that do not require shutdown, consider the MICRF113 in SOT23-6.

• 1.8V to 3.6V supply voltage range
• Up to +10dBm output power (CW)
• 6.9mA supply current at 1kbps ASK (50% Manchester)
• 11.5mA supply current at +10dBm (FSK/CW)
• 1μA shutdown supply current
• Data rates up to 50kbps ASK, 10kbps FSK
• Crystal or ceramic resonators sets RF frequency
• -40°C to +125°C temperature range
• 10-pin MSOP (3.0mm×4.9mm)
• 10-pin Ultra-Thin DFN (2mm×2mm×0.4mm)

• Remote keyless entry systems (RKE)
• Remote control (STB, HVAC, and appliances)
• Garage door openers (GDO)
• Tire pressure monitor systems (TPMS)
• Outdoor weather stations
• Security/Alarm systems
• Lighting and fan remote controls
• Doorbells
• Irrigation control