Analog Devices' 4-GHz PLL Synthesizer offers leading phase noise performance

The new PLL is showcased this week at Analog Devices Booth 221.



With an RF bandwidth of 4 GHz, the ADF4153A PLL synthesizer consists of a low-noise digital phase frequency detector (PFD), a precision charge pump, a sigma-delta fractional-N divider and a programmable reference divider. When used together with an external VCO, the ADF4153A PLL can phase lock signals up to 4 GHz and can greatly improve the system integrated phase noise compared to the ADF4153, without requiring any significant board revisions. The ADF4153A displays market leading phase noise figure of merit (FOM) and PLL 1/f noise performance for a sub-100 mW part.



ADF4153A Fractional-N PLL Synthesizer Key Features:



-2.7 V to 3.3 V power supply

-1.8 V logic compatibility

-PLL phase noise figure of merit: -223 dBc/Hz, an improvement of 3 dB improvement over the ADF4153

-PLL 1/f noise: -121dBc/Hz @ 10kHz offset normalized to 1 GHz RF (7 dB improvement over the ADF4153)

-Separate charge pump supply allows extended tuning voltage (up to 5 V) in 3 V systems

-Programmable modulus and programmable charge pump currents

-Programmable RF output phase

-3-wire serial interface



Pricing, Availability and Complementary Products



Product: ADF4153A

Sample Availability: Now

Full Production: Now

Price Each In 1,000 Quantities: $1.81

Packaging: 20-lead LFCSP



The ADF4153A PLL synthesizer is well-suited to work with ADI’s ADP150 low-noise LDO regulator, ADL5801 and ADL5802 RF mixers as well as the ADF4350 and ADF4351 PLL synthesizers.