ADI ADCLK944 Clock Fanout Buffer and AD9553 Flexible Clock Translator

Analog Devices, Inc. (ADI) announced the AD9553 clock generator and ADCLK944 high-speed clock fanout buffer. The new clock products improve performance and reduce programming and design complexity in synchronous optical networks and wireless base stations. The AD9553 (5 mm x 5 mm, 32-lead LFCSP) and ADCLK944 (3 mm x3 mm, 16-lead LFCSP) are sampling now for $5.10 and $6.00, respectively.

The AD9553 clock generator is ideal for low-cost clock translation needs in GPON, SONET/SDH OC-48 (synchronous optical networking/synchronous digital hierarchy), test and measurement, data acquisition, Ethernet, Fibre Channel, T1/E1, broadcast video and other wireless and wired communications applications. The ADCLK944 will improve SNR (signal-to-noise ratio) performance from data converters in wireless base stations and provide low-power, low-jitter performance for SONET/SDH optical networks.

ADCLK944 Clock Fanout Buffer

Analog Devices (ADI) ADCLK944 Clock Fanout Buffer
  • Operating frequency: 7.0 GHz
  • Broadband random jitter: 50 fs rms
  • On-chip input terminations
  • Power supply (VCC – VEE): 2.5 V to 3.3 V

AD9553 Clock Translator

Analog Devices (ADI) AD9553 Flexible Clock Translator
  • Input frequencies from 8 kHz to 710 MHz
  • Output frequencies up to 810 MHz
  • Preset pin-programmable frequency translation ratios cover popular wireline and wireless frequency applications, including xDSL, T1/E1, BITS, SONET, and Ethernet
  • Arbitrary frequency translation ratios via SPI port
  • On-chip VCO
  • Accepts a crystal resonator for holdover applications
  • Two single-ended (or one differential) reference input(s)
  • Two output clocks (independently programmable as LVDS, LVPECL, or CMOS)
  • SPI-compatible, 3-wire programming interface
  • Single supply (3.3 V)
  • Very low power: <450 mW (under most conditions)

More info: ADI ADCLK944 Clock Fanout Buffer | AD9553 Flexible Clock Translator (pdf)