The AD800 and AD802 employ a second order phase-locked loop architecture to perform clock recovery and data re timing on Non-Return to Zero, NRZ, data. This architecture is capable of supporting data rates between 20 Mbps and 160 Mbps. The products described here have been defined to work with standard telecommunications bit rates. 45 Mbps DS-3 and 52 Mbps STS-1 are supported by the AD800-45 and AD800-52 respectively. 155 Mbps STS-3 or STM-1 are supported by the AD802-155.

Unlike other PLL-based clock recovery circuits, these devices do not require a preamble or an external VCXO to lock onto input data. The circuit acquires frequency and phase lock using two control loops. The frequency acquisition control loop initially acquires the clock frequency of the input data. The phase-lock loop than acquires the phase of the input data, and ensures the phase of the output signals track changes in the phase of the output data. The loop damping of the circuit is dependent of the value of a user selected capacitor; this defines jitter peaking and performance and impacts acquisition time. The devices exhibit 0.08 dB jitter peaking, and acquire lock on random or scrambled data within 4 X 10⁵ bit periods when using a damping factor of 5.

During the process of acquisition the frequency detector provides a Frequency Acquisition (FRAC) signal which indicates that the device has not yet locked onto the input data. This signal is a series of pulses which occur at the points of cycle slip between the input data and the synthesized clock signal. Once the circuit has acquired frequency lock no pulses occur at the FRAC output.

The inclusion of a precisely trimmed VCO in the device eliminates the need for external components for setting center frequency, and the need for trimming of those components. The VCO provides a clock output within ±20% of the device center frequency in the absence of input data.

The AD800 and AD802 exhibit virtually no pattern jitter, due to the performance of the patented phase detector. Total loop jitter is 20° peak-to-peak. Jitter bandwidth is dictated by mask programmable fractional loop bandwidth. The AD800, used for data rates <90 Mbps, has been designed with nominal loop bandwidth of 0.1% of the center frequency. The AD802, used for data rates in excess of 90 Mbps, has a loop bandwidth of 0.08% of center frequency.

All of the devices operate with a single +5 V or -5.2 V supply.

Part#	Voltage Supply (V)	Data Rate (Gb/s)	Power Dissipation (mW)	Input Sensitivity (mVp-p)	Jitter Tolerance (Ulpp)	Jitter Transfer	Jitter Gen (mUI rms)	Rate	Package	Price* (1000-4999)
AD800	-5.5	156	-	80	.9 UI @ 65 kHz	-	-	-	20-Lead SOIC	$20.79
AD807	+5	0.155	170	2	1.0 @ 65 kHz	92 kHz	5	Single	16-Lead SOIC	$11.05
AD808	+5	0.622	400	4	0.6 @ 250 kHz	333 kHz	7	Single	16-Lead SOIC	$11.34
ADN2804	+3.3	0.622	420	3	1.0 @ 250 kHz	71 kHz @ OC12	1	Single	5x5 mm LFCSP	$9.88
ADN2806	+3.3	0.622	360	200	1.0 @ 250 kHz	71 kHz @ OC12	1	Single	5x5 mm LFCSP	$9.13
ADN2807	+3.3	0.622	500	4	1.0 @ 250 kHz	140 kHz @ OC12	1	Multi	7x7 mm LFCSP	$11.50
ADN2811	+3.3	2.7	500	4	1.0 @ 1 MHz	590 kHz @ OC48	2	Single	7x7 mm LFCSP	$37.00
ADN2812	+3.3	2.7	750	6	1.0 @ 1 MHz	490 kHz @ OC48	1	Continous	5x5 mm LFCSP	$54.00
ADN2813	+3.3	1.25	375	6	1UI @ 637 kHz	71 kHz @ OC12	1	Continous	5x5 mm LFCSP	$19.50
ADN2814	+3.3	0.675	350	6	1.0 @ 250 kHz	71 kHz @ OC12	1	Continous	5x5 mm LFCSP	$11.50
ADN2815	+3.3	1.25	300	6	1.0 @ 250 kHz	71 kHz @ OC12	1	Continous	5x5 mm LFCSP	$17.55
ADN2816	+3.3	0.675	300	4	1.0 @ 250 kHz	71 kHz @ OC12	1	Continous	5x5 mm LFCSP	$10.35
ADN2817	+3.3	2.7	650	5	1.0 @ 1 MHz	500 kHz @ OC48	1	Continous	5x5 mm LFCSP	$43.74
ADN2818	+3.3	2.7	600	200	1.0 @ 1 MHz	500 kHz @ OC48	1	Continous	5x5 mm LFCSP	$41.55
ADN2819	+3.3	2.7	500	4	1.0 @ 1 MHz	590 kHz @ OC48	2	Multi	7x7 mm LFCSP	$45.00
ADN2865	+3.3	2.7	1200	6	-	-	-	Continous	-	-

* 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.

The model number is a specific version of a generic that can be purchased or sampled.

Status indicates the current lifecycle of the product. This can be one of 4 stages:

• Pre-Release: The model has not been released to general production, but samples may be available.
• Production: The model is currently being produced, and generally available for purchase and sampling.
• Last Time Buy: The model has been scheduled for obsolescence, but may still be purchased for a limited time.
• Obsolete: The specific part is obsolete and no longer available. Other models listed in the table may still be available (if they have a status that is not obsolete).

The package for this IC (i.e. DIP, SOIC, BGA). An Evaluation Board is a board engineered to show the performance of the model, the part is included on the board.

For detailed drawings and chemical composition please consult our  Package Site

Pin Count is the number of pins, balls, or pads on the device. Pin-out diagrams & pin function descriptions may be found in the datasheet.

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

The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.

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Due to environmental concerns, ADI offers many of our products in lead-free versions. For more information about lead-free parts, please consult our Pb (Lead) free information page.