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23.5MHz to 6000MHz Fractional/Integer-N Synthesizer/VCO

High-Performance, Wide-Frequency PLL with Integrated VCOs Simplifies Signal Chain and Improves Performance

Product Details

Key Features

Applications/Uses

Parametric specs for PLLs/PLLs with Integrated VCO
Synthesizer Mode Fractional
Integer
VSUPPLY (V) 3.0 to 3.6
Oper. Freq. (MHz) (min) 23.5
Oper. Freq. (MHz) (max) 6000
Prog. POUT (dBm) -4 to +5
Differential RF Outputs 2
Inband Noise Floor (dBc/Hz) -226.4
RMS Jitter (ps RMS) (typ) 0.25
EVM @ 2.1GHz (%) (typ) 0.35
Package/Pins TQFN/32
Oper. Temp. (°C) -40 to +85
Budgetary
Price (See Notes)
7.04
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Simplified Block Diagram

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Parameters

Parametric specs for PLLs/PLLs with Integrated VCO
Synthesizer Mode Fractional
Integer
VSUPPLY (V) 3.0 to 3.6
Oper. Freq. (MHz) (min) 23.5
Oper. Freq. (MHz) (max) 6000
Prog. POUT (dBm) -4 to +5
Differential RF Outputs 2
Inband Noise Floor (dBc/Hz) -226.4
RMS Jitter (ps RMS) (typ) 0.25
EVM @ 2.1GHz (%) (typ) 0.35
Package/Pins TQFN/32
Oper. Temp. (°C) -40 to +85
Budgetary
Price (See Notes)
7.04

Key Features

  • 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: 0.25psRMS (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

Applications/Uses

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

Description

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.

What are the differences between MAX2870 and MAX2871? ›


Simplified Block Diagram

MAX2870: Functional Diagram MAX2870: Functional Diagram Zoom icon

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .