UMA1005T

Features:

` Fast locking by 'Fractional-N' divider
` Auxiliary synthesizer
` Digital phase comparator with proportional and integral charge pump output
` High-speed serial input
` Low-power consumption
` Programmable charge pump currents
` Supply voltage range 2.9 to 5.5 V.


Application

· Mobile telephony
· Portable battery-powered radio equipment.


Pinout




Description

The UMA1005T is a low-power, high-performance dual frequency synthesizer fabricated in CMOS technology. Fractional-N division with selectable modulo 5 or 8 is implemented in the main synthesizer.

The UMA1005T detectors and charge pumps are designated to achieve 10 to 5000 kHz channel spacing using fractional-N decreases the channel spacing by a factor 5 or 8. Together with an external standard 2, 3 or 4 ratio prescaler the main synthesizer can operate in the GHz frequency range. Channel selection and programming is realized by a high-speed 3-wire serial interface.