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AD9550:  Integer-N Clock Translator for Wireline Communications

Product Details

Product Status:Recommended for New Designs

The AD9550 is a phase-locked loop (PLL) based clock translator designed to address the needs of wireline communication and base station applications. The device employs an integer-N PLL to accommodate the applicable frequency translation requirements. It accepts a single-ended input reference signal at the REF input.

The AD9550 is pin programmable, providing a matrix of standard input/output frequency translations from a list of 15 possible input frequencies to a list of 51 possible output frequency pairs (OUT1 and OUT2).

The AD9550 output is compatible with LVPECL, LVDS, or single-ended CMOS logic levels, although the AD9550 is implemented in a strictly CMOS process.

The AD9550 operates over the extended industrial temperature range of −40°C to +85°C.

  • Cost effective replacement of high frequency VCXO, OCXO, and SAW resonators
  • Flexible frequency translation for wireline applications such as Ethernet, T1/E1, SONET/SDH, GPON, xDSL
  • Wireless infrastructure
  • Test and measurement (including handheld devices)


  • Converts preset standard input frequencies to standard output frequencies
  • Input frequencies from 8 kHz to 200 MHz
  • Output frequencies up to 810 MHz LVPECL and LVDS (200 MHz CMOS)
  • Preset pin-programmable frequency translation ratios
  • On-chip VCO
  • Single-ended CMOS reference input
  • Two output clocks (independently programmable as LVDS, LVPECL, or CMOS)
  • Single supply (3.3 V)
  • Very low power: <450 mW (under most conditions)
  • Small package size (5 mm × 5 mm)
  • Exceeds Telcordia GR-253-CORE jitter generation, transfer and tolerance specifications

Functional Block Diagram


Title Content Type File Type
AD9550: Integer-N Clock Translator for Wireline Communications  (Rev 0, 09/2010) (pdf, 399 kB) Data Sheets PDF
UG-203: Evaluating the AD9550 Integer-N Clock Translator  (pdf, 201 kB) User Guides PDF
RAQs index Rarely Asked Questions HTML
Glossary of EE Terms Glossary HTML

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Product Recommendations & Reference Designs

Companion Products

Suggested Complementary Products

Recommended Clock Drivers for the AD9550

Recommended Linear Regulators for the AD9550
  • For ultralow noise, low dropout, we recommend the ADP150 or the ADP151.
Recommended Power Solutions
  • For selecting voltage regulator products, use ADIsimPower.

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The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.

AD9550 Evaluation Board
Model Description Price RoHS View PCN/ PDN Check Inventory/
AD9550/PCBZ Status: Production Evaluation Board $190.00 Yes -

Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.

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