
Analog Devices
GENERAL DESCRIPTION
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.
FEATURES
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
APPLICATIONS
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)