RF Micro Devices has launched a new single-band front end solution that features an integrated transmit (TX) local oscillator (LO) buffer amplifier for applications using CDMA, CDMA IS-95, JCDMA, cdma2000 1x and cdma2000 1x-EVDO standards.
Michael Coady, marketing manager for CDMA products at RF Micro Devices, said, "Board space is extremely valuable in current- and next-generation handsets, especially in 1x-EVDO solutions where system engineers often use two receivers. The RF2870 features an extremely small 3 mm x 3 mm footprint package, reducing the required board space and associated cost, as compared to leading competitive solutions. This solution meets industry demands for reduced package size while adding the increased functionality of its integrated TX LO buffer amplifier and lower noise figure in both the LNA and mixer. In addition to reducing board space, the highly integrated solution helps engineers efficiently achieve design goals and accelerate time-to-market."
The RF2870 is designed to exceed the IS-98B/D interim standard for CDMA cellular communications. The design offers a three-state gain control to meet IS-98 IMD tests. The device also includes an integrated TX LO buffer amplifier and digital control of LNA gain, mixer gain and power down mode. The RF2870 amplifies and downconverts RF signals with stepped gain control and adjustable IIP3 of the mixer using an off-chip current setting resistor to allow for minimum DC current consumption. The IC features 1.9 dB cascaded noise figure and 25 dB cascaded gain.'"
Posted to the site on 13th August 2002
Posted to: www.cellular-news.com/story/7362.php