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CYF113 Datasheet      
300M-450MHz RF Transmitter

General Description
The CYF113 is a high performance, easy to use, single chip ASK Transmitter IC for remote wireless applications in the 300 to 450MHz frequency band. This transmitter IC is a true “data-in, antenna-out” monolithic device. CYF113 has three strong attributes: power delivery, operating voltage and operating temperature. In terms of power, the CYF113 is capable of delivering +10 dBm into a 50Ω load. This power level enables a small form factor transmitter (lossy antenna) such as a key fob transmitter to operate near the maximum limit of transmission regulations. In terms of operating voltage, the CYF113 operates from 1.8V to 3.6V. Many transmitter ICs in the same frequency band stop operating below 2.0V. The CYF113 will work with most batteries to the end of their useful limits. In terms of operating temperature, the CYF113 operates from -40°C to +85°C
The CYF113 is easy to use. It requires a reference frequency (RF carrier frequency divided by 32 times) generated from a crystal with a few additional external parts to create a complete versatile transmitter.
The CYF113 operates with ASK/OOK (Amplitude Shift Keying/On-Off Keyed) UHF receiver types from wide-band super-regenerative radios to narrow-band, high performance super-heterodyne receivers. CYF113’s maximum ASK data rate is 10kbps (Manchester Encoding)
The CYF113 transmitter solution is ideal for industrial and consumer applications where simplicity and form factor are important.

Features
• Complete UHF transmitter
• Frequency range 300MHz to 450MHz
• Data rates up to 10kbps ASK
• Output Power to 10dBm
• Low external part count
• Low voltage operation (down to 1.8V)
• Operate with crystals or ceramic resonators
 
Applications
• Fan Controllers
• Remote Power Switches
• Multi-Media Remote Control
• Remote Sensor Data Links
• Infrared Transmitter Replacement