UMA1005
Overview
- 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. APPLICATIONS
- Mobile telephony
- Portable battery-powered radio equipment. ORDERING INFORMATION PACKAGE TYPE NUMBER NAME UMA1005T SSOP20 DESCRIPTION GENERAL DESCRIPTION UMA1005T 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 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
- 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.
