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Analog Devices Inc. ADN2815ACPZ-RL7
- Part No.:
- ADN2815ACPZ-RL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Application Specific Clock/Timing
- Package:
- 32-WFQFN Exposed Pad, CSP
- Datasheet:
-
ADN2815ACPZ-RL7.pdf
- Description:
- IC CLK DATA REC SDH 1.25GHZ
- Quantity:
- Payment:
- Shipping:
Inventory:3,578
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Product details
Overview
ADN2815ACPZ-RL7 from Analog Devices is a continuous-rate clock and data recovery (CDR) IC for optical and serial communication receivers, supporting 10 Mb/s to 1.25 Gb/s input data rates, delivering LVDS-recovered clock (CLKOUTP/N) and retimed data (DATAOUTP/N) outputs, and meeting SONET OC-1/OC-3/OC-12 jitter transfer/generation/tolerance requirements in telecom infrastructure.
For engineers reviewing the ADN2815ACPZ-RL7 datasheet, ADN2815ACPZ-RL7 pinout, ADN2815ACPZ-RL7 application, or ADN2815ACPZ-RL7 equivalent, this device is selected for high-fidelity signal regeneration in SONET, Fibre Channel, and GbE systems where autonomous rate acquisition, low-jitter output, and loss-of-lock monitoring are critical design requirements.
Technical Context
The ADN2815ACPZ-RL7 implements a patented dual-loop architecture combining a delay-locked loop (DLL) for wideband jitter accommodation and a phase-locked loop (PLL) with VCO for narrowband jitter filtering - eliminating jitter peaking by removing the zero from the closed-loop transfer function. Its frequency acquisition loop uses coarse VCO tuning via external CF1/CF2 capacitors to lock from 10 MHz baseline without reference clock.
It operates as a fully autonomous CDR: no external reference clock required, automatic rate detection across 10 Mb/s–1.25 Gb/s, I²C-configurable features (SQUELCH, static LOL, REFCLK mode), and integrated CML input buffer with 100 Ω differential termination referenced to internal 2.5 V VREF.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data Rate Range | 10 Mb/s to 1.25 Gb/s - supports SONET OC-1/-3/-12, Fibre Channel, GbE, and WDM transponder line rates without reconfiguration. |
| Jitter Generation | 0.003 UI rms (OC-12, 12 kHz–5 MHz) - ensures minimal added timing uncertainty to regenerated signals in cascade regenerator applications. |
| Input Sensitivity | 200 mV p-p differential (CML) - enables reliable locking to low-amplitude degraded optical receiver outputs. |
| Output Interface | LVDS CLKOUTP/N and DATAOUTP/N - provides 300 mV typical differential swing compatible with standard FPGA/ASIC clock/data inputs. |
| Power Consumption | 390 mW typical at 3.3 V - enables dense integration in power-constrained line cards and test equipment. |
| LOL Accuracy | ±250 ppm lock detect / ±1000 ppm loss-of-lock hysteresis - guarantees robust false-lock immunity during transient frequency shifts. |
| Package | 5 mm × 5 mm 32-lead LFCSP - surface-mount footprint with exposed thermal pad for efficient heat dissipation in high-density PCBs. |
Pinout & Package
ADN2815ACPZ-RL7 is housed in a Pb-free 5 mm × 5 mm 32-lead LFCSP with exposed thermal pad (connected to GND). The package supports high-speed signal integrity via controlled impedance routing and low-inductance grounding through the bottom paddle.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PIN / NIN | Differential CML Data Input | Accepts NRZ data; internally terminated to 2.5 V VREF with 100 Ω differential impedance - no external termination needed. |
| CLKOUTP / CLKOUTN | Differential LVDS Recovered Clock Output | Provides low-jitter clock synchronized to input data; 300 mV typical swing, 100 Ω differential output impedance. |
| DATAOUTP / DATAOUTN | Differential LVDS Retimed Data Output | Delivers clean, jitter-filtered data aligned to recovered clock; matches CLKOUT timing for synchronous sampling. |
| LOL | LVTTL Loss-of-Lock Indicator | Active-high open-drain output signaling VCO frequency error >1000 ppm - used for system fault reporting and auto-recovery control. |
| SQUELCH | LVTTL Output Disable Control | Active-high input disabling both CLKOUT and DATAOUT - prevents metastability during link initialization or fault conditions. |
| REFCLKP / REFCLKN | Optional Differential Reference Clock Input | Enables lock-to-reference mode (10–160 MHz); improves acquisition speed and stability when precise external timing is available. |
| VCC / VEE / Exposed Pad | Power and Ground Terminals | Multiple VCC (12 pins) and VEE (8 pins) connections minimize supply noise; exposed pad must be soldered to GND for thermal and EMI performance. |
Key Features
| Feature | Design Value |
|---|---|
| No reference clock required | Autonomous frequency acquisition from 10 Mb/s to 1.25 Gb/s eliminates need for external clock sources or rate programming - reduces BOM and layout complexity. |
| Patented DLL+PLL architecture | Zero-jitter-peaking closed-loop response enables cascaded regenerator deployment without jitter accumulation - meets Telcordia GR-253-CORE. |
| I²C interface (SCK/SDA) | Enables runtime configuration of SQUELCH, static LOL, REFCLK mode, and data rate readback - supports dynamic system adaptation and diagnostics. |
| Loss-of-lock hysteresis | 250 ppm lock / 1000 ppm unlock thresholds prevent chatter during marginal signal conditions - improves system reliability in noisy optical links. |
| Integrated CML input buffer | On-chip 100 Ω differential termination and 2.5 V VREF reduce external component count and improve high-frequency signal fidelity up to 1.25 Gb/s. |
Applications
| SONET OC-12 Regenerator | Fibre Channel Receiver |
|---|---|
|
Use Scenario: Regenerating degraded OC-12 (622 Mbps) signals in long-haul optical repeaters where input jitter exceeds ITU-T G.823 limits. IC Role / Device Role / Timing Role: CDR performs quantization, clock recovery, and data retiming to reconstruct low-jitter 622 Mbps clock and data streams. Use Value: Meets SONET jitter generation ≤0.026 UI p-p and tolerance ≥1.0 UI p-p at 250 kHz - enabling multi-stage regeneration without BER degradation. |
Use Scenario: Receiving 1.0625 Gb/s Fibre Channel signals in storage area network (SAN) switches with variable-length fiber runs. IC Role / Device Role / Timing Role: Recovers clock and retimes data from CML front-end amplifier output; provides LVDS outputs to FPGA-based link layer logic. Use Value: 1.25 Gb/s max rate and 200 mV p-p sensitivity accommodate worst-case channel loss and dispersion - ensuring link-up across 10 km multimode fiber. |
| Gigabit Ethernet PHY Interface | WDM Transponder Line Card |
|
Use Scenario: Interfacing to 1.25 Gb/s GbE SERDES in telecom access equipment requiring IEEE 802.3-compliant jitter tolerance. IC Role / Device Role / Timing Role: Acts as jitter cleaner between optical receiver TIA and MAC-layer PHY, suppressing upstream jitter before clock domain crossing. Use Value: Jitter tolerance of 0.749 UI p-p at 637 kHz satisfies IEEE 802.3 clause 36 - preventing packet loss under stressed link conditions. |
Use Scenario: Signal conditioning in 10G/40G WDM transponders where multiple wavelengths require independent CDR per channel. IC Role / Device Role / Timing Role: Provides rate-agnostic clock recovery for OTU1/OTU2 framing layers; supports flexible provisioning across client rates. Use Value: Continuous 10 Mb/s–1.25 Gb/s operation enables single-footprint support for legacy and next-gen protocols - reducing inventory and design reuse effort. |
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 |
|---|---|---|---|
| MAX3795ETJ+ | Supports 1.25 Gb/s only; requires external reference clock for acquisition; higher 550 mW power draw. | Best suited for fixed-rate GbE systems where reference clock is available and thermal headroom permits higher dissipation. | Select MAX3795ETJ+ when reference clock is present and SONET jitter specs are not required. |
| LMK03806RHAT | Programmable clock generator (not CDR); no data retiming; requires external data path alignment logic. | Used in clock distribution rather than receiver-side recovery; needs companion retimer IC for full CDR functionality. | Choose LMK03806RHAT only when building custom CDR+clock-gen hybrids with FPGA-based alignment. |
Compared with MAX3795ETJ+ and LMK03806RHAT, the ADN2815ACPZ-RL7 uniquely delivers autonomous continuous-rate CDR with SONET-compliant jitter performance in a single monolithic IC - eliminating external clocks, configuration firmware, and discrete retiming stages required by alternatives.
Availability
ADN2815ACPZ-RL7 is available at Aetrix Electronics and suitable for SONET regenerators, Fibre Channel receivers, and WDM transponder line cards requiring stable component supply, long-term lifecycle assurance, and traceable sourcing for telecom infrastructure deployments.
Supply support for ADN2815ACPZ-RL7 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 is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving precision instrumentation, communications, and industrial markets since 1965.
The ADN2815ACPZ-RL7 belongs to Analog Devices' Clock and Timing portfolio, designed specifically for carrier-grade optical receiver subsystems demanding ultra-low jitter, autonomous rate adaptation, and robust lock monitoring in harsh ambient environments.
FAQ
What data rates does the ADN2815ACPZ-RL7 support without external configuration?
The ADN2815ACPZ-RL7 supports continuous data rates from 10 Mb/s to 1.25 Gb/s with no external programming or reference clock. Its patented frequency acquisition loop automatically detects and locks to any rate in this range using only the incoming data stream - verified per Table 1 and General Description sections of Rev. C datasheet.
Does the ADN2815ACPZ-RL7 meet SONET jitter specifications?
Yes, the ADN2815ACPZ-RL7 exceeds Telcordia GR-253-CORE SONET requirements for jitter transfer, generation, and tolerance across OC-1, OC-3, and OC-12 rates. Jitter generation is specified at 0.003 UI rms (OC-12), and jitter tolerance reaches 1.0 UI p-p at 250 kHz - confirmed in Table 2 and Jitter Specifications section.
How is the loss-of-lock (LOL) signal used in system design?
The LOL pin on the ADN2815ACPZ-RL7 is an active-high LVTTL indicator asserting when VCO frequency error exceeds ±1000 ppm and deasserting within ±250 ppm. It enables real-time link health monitoring, triggers automatic reset sequences, and supports static LOL mode via I²C register MISC[4] for persistent fault logging - detailed in Lock Detector Operation section.
Can the ADN2815ACPZ-RL7 operate with a reference clock?
Yes, the ADN2815ACPZ-RL7 supports optional lock-to-reference mode via REFCLKP/REFCLKN inputs (10–160 MHz). Enabling this mode using I²C register CTRLA[0] improves acquisition speed and stability in systems with precise external timing - described in Reference Clock (Optional) and CTRLA register tables.
What is the recommended external capacitor for CF1/CF2 on the ADN2815ACPZ-RL7?
A 0.47 µF ±20% X7R ceramic capacitor with <10 nA leakage current is specified for CF1/CF2 (Pins 14/15) to set the frequency acquisition loop time constant. Insulation resistance must exceed 300 MΩ to maintain VCO tuning accuracy - specified in Frequency Acquisition and Absolute Maximum Ratings sections.
ADN2815ACPZ-RL7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 32-WFQFN Exposed Pad, CSP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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:
- 1.25GHz
- Voltage - Supply:
- 3V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 32-LFCSP-WQ (5x5)
ADN2815ACPZ-RL7 FAQ
1.How can I place an order for ADN2815ACPZ-RL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADN2815ACPZ-RL7 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 ADN2815ACPZ-RL7 reliable?
The price and inventory of ADN2815ACPZ-RL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADN2815ACPZ-RL7 is usually 5 days.
3.What payment methods are accepted for ADN2815ACPZ-RL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADN2815ACPZ-RL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADN2815ACPZ-RL7?
ADN2815ACPZ-RL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADN2815ACPZ-RL7 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 ADN2815ACPZ-RL7?
For technical support, including ADN2815ACPZ-RL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADN2815ACPZ-RL7 requirements.
6.How does Aetrix verify that ADN2815ACPZ-RL7 is sourced from the original manufacturer or authorized distributors?
All ADN2815ACPZ-RL7 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 ADN2815ACPZ-RL7 meets industry standards.
7.What is the process for return or replacement of ADN2815ACPZ-RL7?
All ADN2815ACPZ-RL7 units undergo pre-shipment inspection (PSI). If there is an issue with ADN2815ACPZ-RL7, 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 ADN2815ACPZ-RL7 part is unused and in its original packaging.
Return procedure for ADN2815ACPZ-RL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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