UMA1016BT

INTEGRATED CIRCUITS DATA SHEET UMA1016xT Frequency synthesizer for radio communication equipment Product specification Supersedes data of June 1992 File under Integrated Circuits, IC03 1995 Jul 12 Philips Semiconductors Product specification Frequency synthesizer for radio communication equipment FEATURES RF input frequencies to 1 GHz Fully programmable RF divider 3-wire serial bus interface On-chip 3 to 16 MHz crystal oscillator Mask programmable ÷2 to ÷31 reference divider ratio Up to 1 MHz channel spacing Crystal frequency buffered output Dual register architecture for fast Tx/Rx switching in TDD single synthesizer systems Phase detector compensated for supply and temperature variations Power-down mode. APPLICATIONS 900 MHz cordless telephones Portable battery-powered radio equipment. GENERAL DESCRIPTION UMA1016xT The UMA1016xT is a low power synthesizer for radio communications. Manufactured in bipolar technology, it is designed for a 70 to 1000 kHz channel spacing in the 500 to 1000 MHz band. The channel is programmed via a 3-wire serial bus. The internal dual register architecture allows a single synthesizer to be used in TDD systems. Fast switching between transmit and receive frequencies is achieved without the need for bus overhead. It also incorporates a sensitive, low power RF divider and a dead-zone-eliminated 3-state phase comparator. A power-down mode enables the circuit to be idled. QUICK REFERENCE DATA SYMBOL Supply VCC VDD ICC + ...