MAX2880 250 MHz to 12.4 GHz, High-Performance, Fractional/Integer-N PLL


Maxim's high-frequency PLL breaks new performance barriers

The MAX2880 is a high-performance phase-locked loop (PLL) capable of operating in both integer-N and fractional-N modes. Combined with an external reference oscillator, loop filter, and VCO, the device forms an ultra-low noise and low-spur frequency synthesizer capable of accepting RF input frequencies of up to 12.4 GHz.

The MAX2880 consists of a high-frequency and low-noise-phase frequency detector (PFD), precision charge pump, 10-bit programmable reference counter, 16-bit integer-N counter, and 12-bit variable modulus fractional modulator.

The MAX2880 is controlled by a 3-wire serial interface and is compatible with 1.8 V control logic. The device is available in a lead-free, RoHS-compliant, 4 mm x 4 mm, 20-pin TQFN package, and operates over an extended -40°C to +85°C temperature range.


Key Features
  • Integer and fractional-N modes
  • 250M Hz to 12.4 GHz broadband RF input
  • Normalized in-band noise floor
    • -229 dBc/Hz in integer mode
    • -227 dBc/Hz in fractional mode
    • -10 dBm to +5 dBm wide input sensitivity
  • Low-noise phase frequency detector
    • 105 MHz in fractional mode
    • 140 MHz in integer mode
  • Reference frequency up to 205 MHz
  • Operates from +3.0 V to +3.6 V supply
  • Cycle slip reduction and fast lock
  • Software and hardware shutdown
  • Software lock detect
  • On-chip temperature sensor
  • Compatible with +1.8 V control logic
  • Base adjustment
Applications/Uses
  • Microwave point-to-point systems
  • RF DAC and ADC clocks
  • Satellite communications
  • Test and measurement
  • Wireless infrastructure

MAX2880 Series

Manufacturer Part Number Description Available Quantity Datasheets
MAX2880ETP+ RF FRACT INTEGER N SYNTH QFN 62