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Multi-output, 1.65-GHz Clock Buffer and Divider Delivers Low Jitter to Optimize Noise Performance in Ultra-high-speed Data Converters

Analog Devices, Inc. (NASDAQ: ADI) today introduced a clock buffer and divider IC (integrated circuit) that combines high-speed, extremely low jitter (41 fs across the 12-kHz to 20-MHz band) and selectable division capability. The 1.65-GHz AD9508 clock buffer is designed for communications, instrumentation, defense and aerospace equipment that require ultra-high-speed data conversion with optimum SNR (signal-to-noise ratio) performance. The device has four dedicated output dividers with bus-programmable division (integers up to 1024) and phase delay, and automatic synchronization. The dividers also have pin-strapping capability for hardwired programming at system power-up. The AD9508 supports up to four differential, or eight single-ended outputs and three logic levels: LVDS (1.65 GHz), HSTL (1.65 GHz), and CMOS (250 MHz).

AD9508 1.65 GHz Clock Buffer and Divider Key Features

  • RMS jitter in HSTL output mode:

    • 41 fs @ 622.08 MHz (12 kHz to 20 MHz)
    • 72 fs @ 622.08 MHZ (20 kHz to 80 MHz)
  • Dividers are pin-strappable for division factors of 1,2,4,8, or 16
  • Outputs: 4 LVDS or HSTL; 8 single-ended CMOS
  • Output-to-output skew: <48 ps (LVDS)
  • Supply voltage: 2.5 V/3.3 V

Availability, Pricing and Complementary Components

Product       Availability      



Price each in
1,000 quantity






-40˚C to 85˚C




24-lead LFCSP


The AD9508 Clock buffer/divider complements ADI’s clock generator and high-speed data converter portfolio.

About Analog Devices

Innovation, performance, and excellence are the cultural pillars on which Analog Devices has built one of the longest standing, highest growth companies within the technology sector. Acknowledged industry-wide as the world leader in data conversion and signal conditioning technology, Analog Devices serves over 60,000 customers, representing virtually all types of electronic equipment. Analog Devices is headquartered in Norwood, Massachusetts, with design and manufacturing facilities throughout the world. Analog Devices is included in the S&P 500 Index.

EngineerZone is a registered trademark of Analog Devices, Inc.

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