UMA1019AM
FEATURES
- Low current from 3 V supply
- Fully programmable RF divider
- 3-line serial interface bus
- Independent fully programmable reference divider, driven from external crystal oscillator
- Dual phase detector outputs to allow fast frequency switching
- Dual power-down modes. APPLICATIONS
- 1 to 1.7 GHz mobile telephones
- Portable battery-powered radio equipment. GENERAL DESCRIPTION
The UMA1019AM BICMOS device integrates prescalers, a programmable divider, and phase parator to implement a phase-locked loop. QUICK REFERENCE DATA SYMBOL VCC, VDD ICC + IDD ICCPD, IDDPD f VCO fxtal f PC Tamb PARAMETER supply voltage supply current current in power-down mode per supply RF input frequency crystal reference input frequency phase parator frequency operating ambient temperature CONDITIONS VCC ≥ VDD MIN. 2.7
- - 1000 3
- - 30
The device is designed to operate from 3 Ni Cd cells, in pocket phones, with low current and nominal 5 V supplies. The synthesizer operates at RF input...
