Product Description
The RF2909 is a monolithic integrated transmitter IC capable of universal direct modulation. The quadrature modulator allows for a variety of modulation formats and compound carriers. The transmitter has two power control modes. Two inputs can be controlled digitally for stepping output power 1mW, 10mW, or 70mW output power. Or, the output level can be adjusted by an analog input from 1mW to 80mW. The quadrature mixers have differential inputs, and are internally biased; a DC blocking capacitor is required if external DC levels are present. The LO is split with a passive network tuned for 915MHz.

FEATUREs
• 2.7V to 5V Power Supply
• 1mW, 10mW, 70mW Digital Output Power
• 20dB Analog Power Control Range
• Excellent Phase & Amplitude Balance
• Compatible with the RF2908

Typical Applications
• Direct Sequence Spread Spectrum
• Spread Spectrum Cordless Phones
• Portable Battery Powered Equipment
• GMSK, QPSK, DQPSK, QAM Modulation
• 915MHz ISM Applications