New Clock ICs From Analog Devices

Analog Devices announced the availability of three new clock ICs to its growing portfolio of clock products. Clock IC family members - the AD9513, AD9514 and AD9515 - that extend output clock rates to 1.6 GHz. The new pin-programmable ICs feature high integration in small packages to eliminate the need for multiple discrete components, save on board space, and ultimately reduce BOM (bill of materials) costs. Like preceding members of Analog Devices' AD95xx clock family, the new clock ICs feature ultra-low jitter performance which can improve SNR (signal-to-noise ratio) by 6 to 12 dB in wireless infrastructure, instrumentation, and broadband networking systems.

Pin-programmability Makes Clocks Easy to Design In
Packaged in a small 32-lead LFCSP (lead frame chip scale package), the AD9513, AD9514 and AD9515 can be placed close to devices requiring clocks. All three products feature 4-level logic pins that are used to program divide ratios, phase offsets, delays and output logic levels. This pin programmability means that no serial port is required for device setup, making it easy for designers to drop the new ICs into existing circuits. All that is required for operation is a single +3.3 V supply.

Like other members of the AD95xx family, the AD9513, AD9514 and AD9515 improve a system's overall noise performance by maintaining additive jitter levels of less than 300 fs (femtoseconds) rms. Superior clock output isolation greatly reduces susceptibility to noise, as compared to competitive solutions.

ADI's distribution ICs feature LVPECL outputs, as well as user-selectable LVDS (low-voltage differential signaling) and CMOS (complementary metal-oxide semiconductor) options. All three products feature divide ratios in the range of 1 to 32, and user-selectable phase offsets. LVPECL outputs operate up to 1.6 GHz with additive jitter of just 225 fs rms.

Availability and Pricing
The AD9514 and AD9515 are available in full production, and the AD9513 is sampling with full production quantities available in early September 2005. The 3-channel AD9513 and AD9514 are priced at $5.95 per unit in 1,000-piece quantities, with the 2-channel AD9515 priced at $4.75 per unit in 1,000-piece quantities. All three AD951x products are specified to operate over the extended industrial temperature range of -40 degrees C to +85 degrees C.