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GENERAL DESCRIPTION

The AD9511 provides a multi-output clock distribution function along with an on-chip PLL core. The design emphasizes low jitter and phase noise to maximize data converter performance. Other applications with demanding phase noise and jitter requirements also benefit from this part.

FEATURES

Low phase noise phase-locked loop core

Reference input frequencies to 250 MHz

Programmable dual-modulus prescaler

Programmable charge pump (CP) current

Separate CP supply (VCPS) extends tuning range

Two 1.6 GHz, differential clock inputs

5 programmable dividers, 1 to 32, all integers

Phase select for output-to-output coarse delay adjust

3 independent 1.2 GHz LVPECL outputs

Additive output jitter 225 fs rms

2 independent 800 MHz/250 MHz LVDS/CMOS clock outputs

Additive output jitter 275 fs rms

Fine delay adjust on 1 LVDS/CMOS output

Serial control port

Space-saving 48-lead LFCSP

APPLICATIONS

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