ADI AD9508SCPZ-EP-R7

The AD9508-EP provides clock fanout capability in a design that emphasizes low jitter to maximize system performance. The AD9508-EP benefits applications such as clocking data converters with demanding phase noise and low jitter requirements. The AD9508-EP has four independent differential clock outputs, each with various types of logic levels available. Available logic types are LVDS (1.2 GHz), HSTL (1.2 GHz), and 1.8 V CMOS (250 MHz). In 1.8 V CMOS output mode, the differential output becomes two CMOS single-ended signals. The CMOS outputs are 1.8 V logic levels. Each output has a programmable divider that can be bypassed or set to divide by any integer up to 1024. In addition, the AD9508-EP supports coarse output phase adjustment between the outputs. The device can also be pin programmed for various fixed configurations at power-up without the need for SPI or I²C programming. The AD9508-EP is available in a 24-lead LFCSP and operates from a single 2.5 V power supply. The temperature range is -55°C to +105°C.

• 1.2 GHz differential clock inputs/outputs
• 10-bit programmable dividers, 1 to 1024, all integers
• Up to 4 differential outputs or 8 CMOS outputs
• Pin strapping mode for hardwired programming at power-up
• <115 fs rms broadband random jitter
• Additive output jitter: 41 fs rms typical (12 kHz to 20 MHz)
• Excellent output-to-output isolation
• Automatic synchronization of all outputs
• Single 2.5 V power supply
• Internal low dropout (LDO) voltage regulator for enhanced power supply immunity
• Phase offset select for output-to-output coarse delay adjust
• 3 programmable output logic levels: LVDS, HSTL, and CMOS
• Serial control port (SPI/I2C) or pin programmable mode
• Space-saving 24-lead LFCSP
• Extended temperature range: -55°C to +105°C
• Controlled manufacturing baseline
• One assembly/test site
• One fabrication site
• Enhanced product change notification
• Qualification data available on request

• Low jitter, low phase noise clock distribution
• Clocking high speed ADCs, DACs, DDSs, DDCs, DUCs, MxFEs
• High performance wireless transceivers
• High performance instrumentation
• Broadband infrastructure