The AD9549 provides synchronization for many systems, including synchronous optical networks (SONET/SDH). The AD9549 generates an output clock, synchronized to one of two external input references. The external references may contain significant time jitter, also specified as phase noise. Using a digitally controlled loop and holdover circuitry, the AD9549 continues to generate a clean (low jitter), valid output clock during a loss of reference condition, even when both references have failed.

The AD9549 operates over an industrial temperature range of −40°C to +85°C.

Applications

Network synchronization

Reference clock jitter cleanup

SONET/SDH clocks up to OC-192, including FEC

Stratum 3/3E reference clocks

Wireless base stations, controllers

Cable infrastructure

Data communications

Data Sheet, Rev. 0, 8/07

Part#	Product Description	+Supply Voltage (V)	# of Inputs	# of Outputs	On-Chip VCO or DCO	Max f-out (MHz)	Output Logic	Random Jitter (ps-RMS)	Package	Price* (1000-4999)
AD9510	Multi-Output Clock Generator	3.3	1	8	No	1200	CMOS, LVDS, LVPECL	0.225	64-LFCSP	$11.95
AD9511	Multi-Output Clock Generator	3.3	1	5	No	1200	CMOS, LVDS, LVPECL	0.225	48-LFCSP	$9.95
AD9512	Clock Divider	3.3	1	5	No	1200	CMOS, LVDS, LVPECL	0.225	48-LFCSP	$8.95
AD9513	Clock Divider	3.3	1	3	No	800	CMOS, LVDS	0.3	32-LFCSP	$5.95
AD9514	Clock Divider	3.3	1	3	No	1600	CMOS, LVDS, LVPECL	0.225	32-LFCSP	$5.95
AD9515	Clock Divider	3.3	1	2	No	1600	CMOS, LVDS, LVPECL	0.225	32-LFCSP	$4.75
AD9516-0	Multi-Output Clock Generator	3.3	2	14	Yes	2950	CMOS, LVDS, LVPECL	0.4	64-LFCSP	$12.50
AD9516-1	Multi-Output Clock Generator	3.3	2	14	Yes	2650	CMOS, LVDS, LVPECL	0.4	64-LFCSP	$12.50
AD9516-2	Multi-Output Clock Generator	3.3	2	14	Yes	2335	CMOS, LVDS, LVPECL	0.4	64-LFCSP	$12.50
AD9516-3	Multi-Output Clock Generator	3.3	2	14	Yes	2250	CMOS, LVDS, LVPECL	0.4	64-LFCSP	$12.50
AD9516-4	Multi-Output Clock Generator	3.3	2	14	Yes	1800	CMOS, LVDS, LVPECL	0.4	64-LFCSP	$12.50
AD9517-0	Multi-Output Clock Generator	3.3	2	12	Yes	2950	CMOS, LVDS, LVPECL	0.4	48-LFCSP	$11.40
AD9517-1	Multi-Output Clock Generator	3.3	2	12	Yes	2650	CMOS, LVDS, LVPECL	0.4	48-LFCSP	$11.40
AD9517-2	Multi-Output Clock Generator	3.3	2	12	Yes	2335	CMOS, LVDS, LVPECL	0.4	48-LFCSP	$11.40
AD9517-3	Multi-Output Clock Generator	3.3	2	12	Yes	2250	CMOS, LVDS, LVPECL	0.4	48-LFCSP	$11.40
AD9517-4	Multi-Output Clock Generator	3.3	2	12	Yes	1800	CMOS, LVDS, LVPECL	0.4	48-LFCSP	$11.40
AD9518-0	Multi-Output Clock Generator	3.3	2	6	Yes	2950	LVPECL	0.4	48-LFCSP	$9.85
AD9518-1	Multi-Output Clock Generator	3.3	2	6	Yes	2650	LVPECL	0.4	48-LFCSP	$9.85
AD9518-2	Multi-Output Clock Generator	3.3	2	6	Yes	2335	LVPECL	0.4	48-LFCSP	$9.85
AD9518-3	Multi-Output Clock Generator	3.3	2	6	Yes	2250	LVPECL	0.4	48-LFCSP	$9.85
AD9518-4	Multi-Output Clock Generator	3.3	2	6	Yes	1800	LVPECL	0.4	48-LFCSP	$9.85
AD9540	Clock Generator Synchronizer	3.3	1	1	Yes	655	CML, PECL-Compliant	0.7	48-LFCSP	$9.95
AD9549	Clock Generator Synchronizer	3.3	2	2	Yes	750	CMOS, HSTL	0.6	64-LFCSP	$12.41
ADCLK905	Clock Buffer	3.3	1	1	No	6000	ECL, LVPECL, PECL	0.06	16-LFCSP	$5.60
ADCLK907	Clock Buffer	3.3	2	2	No	6000	ECL, LVPECL, PECL	0.06	16-LFCSP	$6.75
ADCLK925	Clock Buffer	3.3	1	2	No	6000	ECL, LVPECL, PECL	0.06	16-LFCSP	$5.95

* The pricing listed here is provided only for budgetary purposes as recommended list price in U.S. Dollars in the United States ex factor per unit for the stated volume. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.
** Pricing is currently unavailable. Click on the product number to see the Product Page for additional information.

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This is the acceptable operating range of the device. The various ranges specified are as follows:

• Commercial: 0 to +70 degrees Celsius
• Military : -55 to +125 degrees Celsius
• Industrial: Temperature ranges may vary by model. Please consult the datasheet for more information.
• Automotive: -40 to +125 degrees Celsius

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