CMX975 Description
The CMX975 is an RF building block IC that provides multiple functions consisting of: RF PLL/VCO, IF PLL/VCO, Transmit Up-convert mixer, Rx Down-convert mixer, and LNA. The RF high frequency synthesiser employs a Fractional-N design and will operate at up to 3.6GHz using a fully-integrated internal VCO or at up to 6GHz with an external frequency source.
CMX975 Key Features
- 1 to 2.7 GHz Up/Down-converter Configurable image reject or normal mode Rx mixer Configurable sideband suppression or no
- Integrated LNA 1.7dB noise figure at 1.5GHz 18dB programmable gain range
- RF synthesiser/PLL Fractional-N 24-bit divider Output range 350MHz
- 3.6GHz Programmable output divider Fast lock function Programmable charge pump current
- IF synthesiser/PLL Integer-N 14-bit divider Output range 31MHz
- 1GHz Programmable output divider
- 209dBc/Hz normalised phase noise
- Integrated low noise LDO regulator
- Single 2.7V to 3.6V supply
- 1.8V digital interface supported