GENERAL DESCRIPTION
The UMA1021M BICMOS device integrates a prescaler, programmable dividers, and a phase comparator to implement a phase-locked loop.
The device is designed to operate from 3 NiCd cells, in pocket phones, with low current and nominal 3 V supplies.

FEATURES
• Low phase noise
• Low current from 3 V supply
• Fully programmable main divider
• 3-line serial interface bus
• Independent fully programmable reference divider, driven from external crystal oscillator
• Dual charge pump outputs
• Hard and soft power-down control.

APPLICATIONS
• 900 MHz and 2 GHz mobile telephones
• Portable battery-powered radio equipment.