UMA1016xT

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 inTDD single synthesizer systems
· Phase detector compensated for supply andemperature variations
· Power-down mode.


Application

· 900 MHz cordless telephones
· Portable battery-powered radio equipment.


Pinout




Description

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.