AD9552

RECOMMENDED FOR NEW DESIGNS

Oscillator Frequency Up Converter

Part Models
2
1ku List Price
Starting From $6.55
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Part Details

  • Converts a low frequency input reference signal to a high frequency output signal
  • Input frequencies from 6.6 MHz to 112.5 MHz
  • Output frequencies up to 900 MHz
  • Preset pin programmable frequency translation ratios
  • Arbitrary frequency translation ratios via SPI port
  • Accepts a crystal resonator and/or an external oscillator as a reference frequency source
  • Secondary output (either integer-related to the primary output or a copy of the reference input)
  • RMS jitter: <0.5 ps
  • SPI-compatible, 3-wire programming interface
  • Single supply (3.3 V)
  • Very low power: <400 mW (under most conditions)
  • Small package size (5 mm × 5 mm)
  • On-chip VCO
AD9552
Oscillator Frequency Up Converter
AD9552 Functional Block Diagram
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Tools & Simulations


Evaluation Kits

EVAL-AD9552

AD9552 Evaluation Board

Features and Benefits

  • Simple power connection using USB connection and on-board LDO voltage regulators
  • LDOs are easily bypassed for power measurements
  • AC-coupled differential LVPECL SMA connectors
  • SMA connectors for
    • 1 reference input
    • 1 PLL lock detect output
  • Microsoft Windows®–based evaluation software with simple graphical user interface
  • On-board PLL loop filter
  • Easy access to digital I/O and diagnostic signals via I/O header
  • Status LEDs for diagnostic signals
  • USB computer interface
  • Dip switch configurable for manual operation
  • Software calculator provides flexibility, allowing programming almost any rational input/output frequency ratio

Product Details

The AD9552 evaluation board is a compact, easy to use platform for evaluating all features of the AD9552 oscillator frequency upconverter.

The AD9552 is a fractional-N phase-locked loop (PLL) based clock generator designed specifically to replace high frequency crystal oscillators and resonators. The device employs a sigmadelta (Σ-Δ) modulator (SDM) to accommodate fractional frequency synthesis. The user supplies an input reference signal by connecting a single-ended clock signal directly to the REF pin or by connecting a crystal resonator across the XTAL pins.

The AD9552 is pin programmable, providing one of 64 standard output frequencies based on one of eight standard input frequencies. The device also has a 3-wire SPI interface, enabling the user to program custom input-to-output frequency ratios.

The AD9552 relies on an external capacitor to complete the loop filter of the PLL. The output is compatible with LVPECL, LVDS, or single-ended CMOS logic levels, although the AD9552 is implemented in a strictly CMOS process.

EVAL-AD9552
AD9552 Evaluation Board

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