RF2909 Datasheet | RF Micro Devices

Typical Applications - Direct Sequence Spread Spectrum - Spread Spectrum Cordless Phones - Portable Battery Powered Equipment - GMSK, QPSK, DQPSK, QAM Modulation - 915MHz ISM Applications 3V 915MHZ SPREAD-SPECTRUM TRANSMITTER IC 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 pound carriers. The transmitter has two power control modes. Two inputs can be controlled digitally for stepping output power 1m W, 10m W, or 70m W output power. Or, the output level can be adjusted by an analog input from 1m W to 80m W. 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. .157 .150 .033 .010 .004 .344 .337 .012 .008 .025 R F2 94 .244 .228 8°MAX 0°MIN .050 .016 .010 .008 .069 .053 Optimum Technology Matching® Applied ro du ct Package Style: SSOP-24 üSi Bi-CMOS Q SIG 1 Q REF 2 GND1 3 NC 4 LO IN+ 5 LO IN- 6 NC 7 Si BJT Ga As HBT Si Ge HBT Ga As MESFET Si CMOS Features - 2.7V to 5V Power Supply - 1m W, 10m W, 70m W Digital Output Power - 20d B Analog Power Control Range - Excellent Phase & Amplitude Balance - patible with the...