GENERAL DESCRIPTION

The UMA1014 is a low-power universal synthesizer which has been designed for use in channelized radio communication. The IC is manufactured in bipolar technology and is designed to operate at 5 to 100 kHz channel spacing with an RF input from 50 to 1100 MHz. The channel is programmed via a standard I2C-bus. A low-power sensitive RF divider is incorporated together with a dead-zone eliminated, 3-state phase comparator.

FEATURES

? Single chip synthesizer; compatible with Philips cellular radio chipset

? Fully programmable RF divider

? I2C interface for two-line serial bus

? On-chip crystal oscillator/TCXO buffer from 3 to 16 MHz

? 16 reference division ratios allowing 5 to 100 kHz channel spacing

? 1/8 crystal frequency output

? On-chip out-of-lock indication

? Two extra VCO control outputs

? Latched synthesizer alarm output

? Status register including out-of-lock indication and power failure

? Power-down mode.

APPLICATIONS

? Cellular mobile radio (NMT, AMPS, TACS)

? Private mobile radio (PMR)

? Cordless telephones.