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Analog Devices Inc. ADN2806ACPZ-500RL7
- Part No.:
- ADN2806ACPZ-500RL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Application Specific Clock/Timing
- Package:
- 32-WFQFN Exposed Pad, CSP
- Datasheet:
-
ADN2806ACPZ-500RL7.pdf
- Description:
- IC CLK/DATA REC 622MBPS 32-LFCSP
- Quantity:
- Payment:
- Shipping:
Inventory:1,454
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Product details
Overview
ADN2806ACPZ-500RL7 from Analog Devices is a 622 Mbps clock and data recovery (CDR) IC for SONET OC-12 and BPON ONT applications. It performs automatic frequency acquisition and phase-locked retiming of NRZ data without external reference clock, delivers LVDS clock/data outputs, meets Telcordia GR-253 jitter transfer/generation/tolerance requirements, and operates from a single 3.3 V supply.
For engineers reviewing the ADN2806ACPZ-500RL7 datasheet, ADN2806ACPZ-500RL7 pinout, ADN2806ACPZ-500RL7 application, or ADN2806ACPZ-500RL7 equivalent, key selection considerations include jitter performance at 622 Mbps, LOL hysteresis behavior, I²C-configurable squelch modes, differential CML input compatibility, and LFCSP thermal management in fiber-optic receiver front-ends.
Technical Context
The ADN2806ACPZ-500RL7 implements a hybrid delay-locked loop (DLL) and phase-locked loop (PLL) architecture with shared control voltage: the DLL tracks high-frequency jitter via a voltage-controlled phase shifter, while the PLL handles low-frequency components via a VCO. A third frequency acquisition loop sets coarse VCO tuning by comparing VCO and input data frequencies.
Jitter transfer bandwidth is 75–130 kHz (OC-12), with <0.03 dB peaking; jitter generation is 0.003 UI rms (12 kHz–5 MHz); jitter tolerance reaches 44 UI p-p at 300 Hz and 1.0 UI p-p at 250 kHz. The LOL signal asserts at ±1000 ppm VCO error and deasserts at ±250 ppm, enabling hysteresis-driven reacquisition.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data Rate | 622 Mbps - supports SONET OC-12 line rate with PRBS23−1 pattern compliance. |
| Input Interface | CML differential - 100 Ω internal termination, 0.2–2.0 V p-p swing, 2.3–2.8 V common-mode range. |
| Output Interface | LVDS differential - 250–400 mV p-p swing, 100 Ω output impedance, 115–220 ps rise/fall time. |
| Jitter Generation | 0.003 UI rms (12 kHz–5 MHz) - ensures minimal added phase noise to recovered clock in regenerator chains. |
| Power Consumption | 359 mW typical - achieved at 3.3 V supply and 622.08 Mbps lock, enabling compact thermal design. |
| Operating Temperature | −40°C to +85°C - qualified for industrial and optical network equipment environments. |
| Package | 32-lead 5 mm × 5 mm LFCSP - exposed paddle requires GND connection for thermal and EMI performance. |
Pinout & Package
ADN2806ACPZ-500RL7 uses a 32-lead, 5 mm × 5 mm lead-frame chip-scale package (LFCSP) with exposed thermal pad soldered to GND. Pin 1 (TEST1) and Pin 32 (TEST2) are analog inputs tied to VCC; the exposed pad serves as primary heat sink and must be connected to system ground.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PIN / NIN | Differential CML data input | Accepts 622 Mbps NRZ data; internally terminated to 2.5 V reference; 0.2–2.0 V p-p minimum swing for BER ≤10⁻¹⁰. |
| CLKOUTP / CLKOUTN | Differential LVDS recovered clock output | Provides retimed 622 MHz clock; 250–400 mV p-p swing; matched routing required to maintain <10 ps skew. |
| DATAOUTP / DATAOUTN | Differential LVDS recovered data output | Retimed 622 Mbps NRZ data; identical timing specs to CLKOUT; enables direct interface to downstream SERDES or FPGA. |
| LOL | LVTTL loss-of-lock indicator | Active-high open-drain output; asserts at ±1000 ppm VCO error, deasserts at ±250 ppm; supports hysteresis-based fault detection. |
| SQUELCH | LVTTL output control input | Configurable via I²C: drives both clock/data outputs low (default) or selectively disables data or clock paths in repeater mode. |
| REFCLKP / REFCLKN | Optional differential reference clock input | Supports 10–160 MHz external clock for assisted lock; enables precise frequency alignment in WDM transponders. |
| SDA / SCK | I²C serial interface | Enables readback of data rate accuracy (±100 ppm), configuration of squelch mode, static LOL reset, and LOS polarity. |
Key Features
| Feature | Design Value |
|---|---|
| No-reference-clock operation | Autonomous 622 Mbps lock with <2 ms acquisition time-eliminates need for external clock source in BPON ONT receivers. |
| SONET-compliant jitter performance | Exceeds GR-253-CORE limits for jitter transfer (≤0.03 dB peaking), generation (≤0.003 UI rms), and tolerance (≥44 UI p-p @ 300 Hz). |
| Configurable squelch logic | I²C-selectable mode: simultaneous disable of clock/data outputs (default) or selective disable per path-critical for broadband cross-connect power management. |
| Static loss-of-lock flag | MISC[4] register bit retains LOL assertion until manually reset-enables persistent fault logging in unattended SONET regenerators. |
| Thermally optimized LFCSP | θJA = 28°C/W on 4-layer board with exposed pad to GND-supports continuous operation at full load in +85°C ambient telecom chassis. |
Applications
| BPON ONT Receiver | SONET OC-12 Regenerator |
|---|---|
|
Use Scenario: Fiber-to-the-home optical network terminal receiving downstream 622 Mbps PON traffic. IC Role / Device Role / Timing Role: Clock and data recovery IC extracting clean clock and retimed data from degraded CML input after PIN diode/TIA amplification. Use Value: Enables BER ≤10⁻¹⁰ with only 200 mV p-p input swing; eliminates external reference clock, reducing BOM count and PCB area. |
Use Scenario: Mid-span repeater in long-haul SONET infrastructure restoring signal integrity before retransmission. IC Role / Device Role / Timing Role: Jitter-cleaning CDR suppressing accumulated phase noise using ultra-low jitter generation (0.003 UI rms) and high tolerance (44 UI p-p @ 300 Hz). Use Value: Prevents jitter accumulation across cascaded regenerators via zero-peaking jitter transfer response-directly compliant with GR-253-CORE. |
| WDM Transponder Line Card | Optical Test Equipment |
|
Use Scenario: Dense wavelength division multiplexing transponder performing 622 Mbps channel extraction and retiming. IC Role / Device Role / Timing Role: Reference-clock-assisted CDR (via REFCLKP/REFCLKN) synchronizing recovered data to system timing grid for coherent demux. Use Value: I²C-programmable lock-to-reference mode supports 10–160 MHz reference frequencies with ±100 ppm accuracy-ensures deterministic phase alignment. |
Use Scenario: Bit-error-rate tester or jitter analyzer requiring precise 622 Mbps clock/data recovery for measurement calibration. IC Role / Device Role / Timing Role: High-fidelity CDR providing low-jitter LVDS outputs for sampling oscilloscopes or error detectors. Use Value: Differential LVDS outputs (250–400 mV p-p, <220 ps edge rates) drive 50 Ω test fixtures with minimal reflection; LOL signal enables automated lock validation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar clock and data recovery applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX3675ETA+ | Single 3.3 V supply, 622 Mbps CDR, but lacks I²C interface and static LOL flag; jitter generation 0.005 UI rms (higher than ADN2806ACPZ-500RL7's 0.003 UI rms). | Targeted at cost-sensitive BPON ONTs where configurability is secondary to basic lock functionality. | Select when I²C control and persistent fault logging are unnecessary, and thermal budget allows higher jitter floor. |
| LMH0384SQ/NOPB | 622 Mbps CDR with integrated limiting amplifier; requires external reference clock; no autonomous lock capability; 0.004 UI rms jitter generation. | Used in SDI video transport systems where CDR is paired with cable equalization-not suitable for SONET OC-12 without redesign. | Choose only if system already includes a stable reference clock and demands integrated signal conditioning beyond pure CDR function. |
Compared with MAX3675ETA+ and LMH0384SQ/NOPB, the ADN2806ACPZ-500RL7 uniquely combines autonomous lock, SONET-grade jitter performance, I²C configurability, and static fault flagging-making it optimal for telecom-grade regenerators and BPON ONTs requiring field-upgradable timing behavior.
Availability
ADN2806ACPZ-500RL7 is available at Aetrix Electronics and suitable for SONET OC-12 regenerators, BPON ONT receivers, WDM transponder line cards, and optical test equipment requiring stable component supply across extended temperature ranges and multi-year production cycles.
Supply support for ADN2806ACPZ-500RL7 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Analog Devices, Inc. is a global semiconductor company specializing in high-performance analog, mixed-signal, and digital signal processing technologies for precision instrumentation, communications, and industrial applications.
The ADN2806ACPZ-500RL7 belongs to Analog Devices' clock and data recovery product line, engineered specifically for SONET/SDH and PON optical receiver subsystems demanding ultra-low jitter, autonomous lock, and robust thermal performance in compact LFCSP packages.
FAQ
What is the primary function of the ADN2806ACPZ-500RL7 in optical communication systems?
The ADN2806ACPZ-500RL7 functions as a clock and data recovery IC that extracts a clean 622 MHz clock and retimes 622 Mbps NRZ data from degraded optical receiver outputs. It operates autonomously without an external reference clock, meets Telcordia GR-253 jitter specifications, and delivers LVDS clock/data outputs for downstream SERDES or FPGA interfaces-making it essential in BPON ONT, SONET OC-12, and WDM transponder designs.
Does the ADN2806ACPZ-500RL7 require an external reference clock to operate?
No, the ADN2806ACPZ-500RL7 does not require an external reference clock. It achieves autonomous lock to 622 Mbps data using its patented hybrid DLL/PLL architecture and internal frequency acquisition loop. However, an optional differential reference clock (10–160 MHz) can be applied to REFCLKP/REFCLKN pins to assist lock acquisition in noisy environments or for precise frequency alignment in WDM transponders-this mode is enabled via I²C register CTRLA[0].
How does the LOL (Loss-of-Lock) signal behave on the ADN2806ACPZ-500RL7?
The LOL signal on the ADN2806ACPZ-500RL7 is an LVTTL active-high output (Pin 16) that asserts when VCO frequency error exceeds ±1000 ppm relative to nominal 622.08 MHz and deasserts when error falls within ±250 ppm-providing hysteresis to prevent chatter. Its behavior is configurable: default mode reflects real-time lock status, while I²C-controlled static LOL mode (CTRLB[7]) latches the flag until manually reset via CTRLB[6], enabling persistent fault logging in unattended regenerators.
What are the key thermal requirements for reliable operation of the ADN2806ACPZ-500RL7?
The ADN2806ACPZ-500RL7 requires its exposed thermal pad to be soldered directly to a solid GND plane on a 4-layer PCB to achieve θJA = 28°C/W. Without this connection, junction temperature rise exceeds safe limits under full 359 mW operation at +85°C ambient. Thermal vias under the pad (minimum 6×0.3 mm) are recommended. The device is rated for −40°C to +85°C case temperature, and derating is unnecessary when thermal design follows Analog Devices' layout guidelines in the datasheet.
Can the ADN2806ACPZ-500RL7 be used in applications other than 622 Mbps systems?
The ADN2806ACPZ-500RL7 is specifically designed and characterized for 622 Mbps (SONET OC-12) operation. Its jitter transfer bandwidth (75–130 kHz), acquisition time (2.0 ms), and input sensitivity (200 mV p-p min) are optimized for this rate. While the datasheet notes "622 Mbps" as the sole supported data rate and does not specify performance at other speeds, attempting use outside this rate violates guaranteed specifications and may result in failed lock, excessive jitter, or undefined LOL behavior-so ADN2806ACPZ-500RL7 must be applied strictly at 622 Mbps.
ADN2806ACPZ-500RL7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 32-WFQFN Exposed Pad, CSP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- PLL:
- Yes
- Main Purpose:
- SONET/SDH
- Input:
- CML
- Output:
- LVDS
- Number of Circuits:
- 1
- Ratio - Input:Output:
- 1:2
- Differential - Input:Output:
- Yes/Yes
- Frequency - Max:
- 622MHz
- Voltage - Supply:
- 3V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 32-LFCSP-WQ (5x5)
ADN2806ACPZ-500RL7 FAQ
1.How can I place an order for ADN2806ACPZ-500RL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADN2806ACPZ-500RL7 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for ADN2806ACPZ-500RL7 reliable?
The price and inventory of ADN2806ACPZ-500RL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADN2806ACPZ-500RL7 is usually 5 days.
3.What payment methods are accepted for ADN2806ACPZ-500RL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADN2806ACPZ-500RL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADN2806ACPZ-500RL7?
ADN2806ACPZ-500RL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADN2806ACPZ-500RL7 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for ADN2806ACPZ-500RL7?
For technical support, including ADN2806ACPZ-500RL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADN2806ACPZ-500RL7 requirements.
6.How does Aetrix verify that ADN2806ACPZ-500RL7 is sourced from the original manufacturer or authorized distributors?
All ADN2806ACPZ-500RL7 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that ADN2806ACPZ-500RL7 meets industry standards.
7.What is the process for return or replacement of ADN2806ACPZ-500RL7?
All ADN2806ACPZ-500RL7 units undergo pre-shipment inspection (PSI). If there is an issue with ADN2806ACPZ-500RL7, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The ADN2806ACPZ-500RL7 part is unused and in its original packaging.
Return procedure for ADN2806ACPZ-500RL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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