UAA2068AHL

INTEGRATED CIRCUITS DATA SHEET UAA2068AHL Transmit chain and synthesizer with integrated VCO for DECT Product specification File under Integrated Circuits, IC17 1999 Jun 04 Philips Semiconductors Product specification Transmit chain and synthesizer with integrated VCO for DECT FEATURES Economical integrated solution for frequency generation in DECT cordless telephones Integrated low phase noise 950 MHz VCO with frequency doubler Local Oscillator (LO) drive (−14 dBm) for RF mixer circuit Dedicated DECT PLL synthesizer 3-line serial interface bus 3 dBm output preamplifier with an integrated switch Low current consumption from 3 V supply Compatible with Philips Semiconductors ABC baseband chip (PCD509x series). APPLICATIONS 1880 to 1920 MHz DECT cordless telephones. GENERAL DESCRIPTION The UAA2068AHL BiCMOS device integrates a 950 MHz VCO, a frequency doubler, main and reference dividers and a phase comparator, to implement a phase-locked loop for DECT channel frequencies. The 1.9 GHz signal is buffered and switched, in TX mode, to drive the transmit power amplifier (CGY20xx series) or, in RX mode, to be used as an LO signal for the receiver mixer IC (UAA3540TS). The synthesizer’s main divider is driven by the frequency doubler output in the range from 1880 to 1920 MHz and programmed via a 3-wire serial bus. ORDERING INFORMATION PACKAGE TYPE NUMBER NAME UAA2068AHL LQFP32 DESCRIPTION UAA2068AHL The reference divider ratio is fixed at 16. Outputs of the main ...