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.