Texas Instruments LMX2572
The LMX2572 is a low-power, high-performance wideband synthesizer that can generate any frequency from 12.5 MHz to 6.4 GHz without using an internal doubler. The PLL delivers excellent performance while consuming just 75 mA from a single 3.3-V supply. For applications like digital mobile radio (DMR) and wireless microphones, the LMX2572 supports FSK modulation.FEATURES
●1 Output frequency: 12.5 MHz to 6.4 GHz● Low power consumption: 75 mA at 3.3-V supply
● –106-dBc/Hz Phase noise at 100-kHz offset with 6.4-GHz carrier
● PLL figure of merit: –232 dBc/Hz
● PLL normalized 1/f noise: –123.5 dBc/Hz
● 32-Bit Fractional-N divider
● Remove integer boundary spurs with programmable input multiplier
● Synchronization of output phase across multiple devices
● Support for JESD204B SYSREF with programmable delay
● Support for ramp and chirp functions
● Support for FSK direct digital modulation
● Two programmable output power level differential outputs
● Fast VCO calibration speed: < 20 µs
● Single 3-V to 3.5-V power supply 2
APPLICATIONS
● Test and measurement equipment● Digital 2-way radios
● Low power radio communication systems
● Satellite communication
● Wireless microphones
● Propriety wireless connectivity
● MIMO
● RADAR
● High-speed data converter clocking 3
DESCRIPTION
Discrete level FSK and pulse-shaping FSK are supported. Direct digital FSK modulation is achievable through programming or pins.