RF2861

RF2861CDMA Low Noise Amplifier/Mixer 900MHz Downconverter RF2861 CDMA LOW NOISE AMPLIFIER/MIXER 900MHz DOWNCONVERTER Package Style: QFN, 16-pin, 3mm x 3mm ENABLE TX BUFF ENABLE LO OUT VCC Features  3mm x 3mm LNA/Mixer Solution  Adjustable LNA and Mixer Current/IIP3  Meets IMD Tests with Three Gain States/Two Logic Control Pins  Integrated TX LO Buffer Amplifier  Full ESD Protection on all Pins Applications  CDMA/JCDMA Cellular Systems  CDMA450 Handsets/Data Cards  AMPS Cellular Systems  General Purpose LNA and Downconverter  Commercial and Consumer Systems  Portable Battery-Powered Equipment 16 15 14 13 G2 1 12 LO IN LNA IN 2 11 GND LNA EMITTER 3 10 IF OUT- LNA OUT 4 9 IF OUT+ 5678 ISET2 ISET1 G1 MIX IN Functional Block Diagram Product Description The RF2861 is a receiver front-end for CDMA cellular applications, including JCDMA and CDMA450. It is designed to amplify and downconvert RF signals, using a three gain state LNA to obtain 17dB of stepped gain control. Features include digital control of LNA gain and power down mode, along with an integrated TX LO buffer amplifier. Another feature of the chip is adjustable IIP3 of the LNA and mixer using off-chip current setting resistors to allow for minimum DC current consumption. Noise figure, IIP3, and other specs are designed to be compatible with the TIA/EIA 98D standard for CDMA cellular communications. The IC is manufactured on an advanced Silicon Germanium Bi-CMOS process and is in a 3mm x 3mm, ...