MAX2870 Datasheet

• Integer and Fractional-N Modes
• Manual or Automatic VCO Selection
• 3000MHz to 6000MHz Fundamental VCO
• Output Binary Buffers/Dividers for Extended Frequency Range
  • 1/2/4/8/16/32/64/128
  • 23.5MHz to 6000MHz
• Low Phase Noise
  • RMS Jitter: 0.25ps_RMS (typ)
  • EVM at 2.1GHz: 0.35% (typ)
• High-Performance PFD
  • 105MHz in Integer-N Mode
  • 50MHz in Fractional-N Mode
• Reference Frequency Up to 200MHz
• Operates from +3.0V to +3.6V Supply
• Dual Programmable Outputs
  • -4dBm to +5dBm
• Analog and Digital Lock Detect Indicators
• Hardware and Software Shutdown Control
• Compatible with 1.8V Control Logic

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

The 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 23.5MHz to 6.0GHz while maintaining superior phase noise and spurious performance.

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

The MAX2870 is controlled by a 4-wire serial interface and is compatible with 1.8V control logic. The device is available in a lead-free, RoHS-compliant, 5mm x 5mm, 32-pin TQFN package, and operates over an extended -40°C to +85°C temperature range.