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MAX2870 Frequency Synthesizer

The MAX2870 is a high-performance, wide-frequency PLL with integrated VCOs that simplifies signal chain and improves performance


Maxim Integrated's MAX2870 Frequency SynthesizerMaxim Integrated's MAX2870 is an ultra-wideband phase-locked loop (PLL) with integrated voltage-controlled oscillators (VCOs) capable of operating in both integer-N and fractional-N modes. When combined with an external reference oscillator and loop filter, the MAX2870 is a high-performance frequency synthesizer capable of synthesizing frequencies from 23.5 MHz to 6.0 GHz while maintaining superior phase noise and spurious performance.

The ultra-wide frequency range is achieved with the help of multiple integrated VCOs covering a range from 3000 MHz to 6000 MHz, and output dividers ranging from 1 to 128. The device also provides dual differential output drivers, which can be independently programmable to deliver -4 dBm to +5 dBm output power. Both outputs can be muted by either software or hardware control.

The MAX2870 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, 5 mm x 5 mm, 32-pin TQFN package, and operates over an extended -40°C to +85°C temperature range.

Product Training Module - MAX2870 Wideband PLL

Features
  • Integer and Fractional-N Modes
  • Manual or Automatic VCO Selection
  • 3000 MHz to 6000 MHz Fundamental VCO
  • Output Binary Buffers/Dividers for Extended Frequency Range
    • 1/2/4/8/16/32/64/128
    • 23.5 MHz to 6000 MHz
  • High-Performance PFD
    • 105 MHz in Integer-N Mode
    • 50 MHz in Fractional-N Mode
  • Operates from +3.0 V to +3.6 V Supply
  • Analog and Digital Lock Detect Indicators
  • Hardware and Software Shutdown Control
  • Compatible with 1.8 V Control Logic

Applications
  • Clock Generation
  • Military and Aerospace
  • PMAR/LMAR/Public Safety Radio
  • Satellite Communications
  • Test and Measurement
  • Wireless Infrastructure
  • Wireless LANs/CATV

Digi-Key P/N Manufacturer P/N Description  
MAX2870ETJ+-ND MAX2870ETJ+ RF FRACT INTR N SYNTH VCO 32TQFN Datasheet
MAX2870EVKIT#-ND MAX2870EVKIT# EVAL KIT MAX2870