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Home > Products > Integrated Circuits (ICs) > Clock/Timing > Application Specific Clock/Timing

Analog Devices Inc. ADN2807ACPZ

Name: ADN2807ACPZ
Brand: Analog Devices Inc.
SKU: ADN2807ACPZ
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: ADN2807ACPZ

Manufacturer:: Analog Devices Inc.

Category:: Application Specific Clock/Timing

Package:: 48-WFQFN Exposed Pad, CSP

Datasheet:: ADN2807ACPZ.pdf

Description:: IC CLOCK/DATA RECOVERY 48LFCSP

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Product details

Overview

ADN2807ACPZ from Analog Devices is a multirate clock and data recovery (CDR) IC with integrated limiting amplifier, designed for SONET OC-3/OC-12 and 15/14 FEC applications. It delivers 4 mV typical quantizer sensitivity, ±100 mV adjustable slice level, and meets all SONET jitter transfer/generation/tolerance requirements at 155.52 MHz and 622.08 MHz data rates. It operates from a single 3.3 V supply and uses a 7 mm × 7 mm 48-lead LFCSP package.

For engineers reviewing the ADN2807ACPZ datasheet, ADN2807ACPZ pinout, ADN2807ACPZ application, or ADN2807ACPZ equivalent, key selection criteria include its dual-rate CDR capability (OC-3/OC-12), integrated LOS detection with resistor-programmable threshold, low-jitter 2.5 GHz VCO architecture, and compatibility with LVPECL/LVDS/LVCMOS reference clocks up to 155.52 MHz.

Technical Context

The ADN2807ACPZ implements a patented hybrid delay-locked loop (DLL) and phase-locked loop (PLL) architecture: the DLL tracks high-frequency jitter via a voltage-controlled phase shifter, while the PLL handles low-frequency components using a 2.5 GHz VCO with fractional divider. This dual-loop structure eliminates jitter peaking in the closed-loop transfer function, achieving only 0.002 dB (OC-3) and 0.004 dB (OC-12) jitter peaking.

It supports native and 15/14 FEC rates without reference clock change, using SEL[1:0] inputs to select 155.52 MHz (OC-3), 622.08 MHz (OC-12), 166.63 MHz (OC-3 FEC), or 666.51 MHz (OC-12 FEC). The limiting amplifier features 50 Ω differential input termination, 54 dB small-signal gain, and dc-coupled operation with 0.4 V minimum common-mode voltage.

Key Specifications

Parameter	Value and Actual Design Meaning
Data Rates	155.52 MHz (OC-3) and 622.08 MHz (OC-12), plus 15/14 FEC variants - enables single-device support across SONET/SDH receiver tiers without hardware change.
Quantizer Sensitivity	4 mV p-p typical - allows reliable recovery from low-amplitude optical signals after PIN diode and TIA stages.
Jitter Generation	0.002 UI rms (OC-3), 0.003 UI rms (OC-12) - ensures minimal added timing noise in regenerator/repeater chains.
Jitter Tolerance	100 UI p-p at 30 Hz (OC-12), 50 UI p-p at 30 Hz (OC-3) - meets GR-253-CORE mask for equipment-level optical interfaces.
Reference Clock Options	19.44 / 38.88 / 77.76 / 155.52 MHz LVPECL/LVDS/LVCMOS - provides flexibility in system clock tree design and eliminates need for external frequency synthesizers.
Power Consumption	540 mW typical at 3.3 V - enables dense WDM transponder integration with thermal management within 7 mm × 7 mm footprint.
Package	7 mm × 7 mm, 48-lead LFCSP with exposed paddle tied to VCC - delivers low θJA = 25°C/W for industrial temperature range (–40°C to +85°C).

Pinout & Package

ADN2807ACPZ is housed in a 7 mm × 7 mm, 48-lead lead-frame chip-scale package (LFCSP) with exposed paddle soldered to VCC plane. Pin 1 is marked by a dot; the exposed pad (EPAD) must be connected to VCC via multiple vias for thermal and electrical performance.

Pin/Terminal	Circuit Role	Design Meaning
1 (THRADJ)	LOS threshold programming input	Connects to GND via external resistor (2 kΩ–90 kΩ) to set loss-of-signal trip point from 0.7 mV to 18 mV - enables optimization for varying optical signal levels.
5/6 (PIN/NIN)	Differential data input	50 Ω internally terminated, ac-coupled inputs accepting 4 mV p-p min signal - interfaces directly with TIA output without external biasing.
13/14 (REFCLKN/REFCLKP)	Differential reference clock input	LVPECL/LVDS/LVCMOS-compatible; LVPECL/LVDS valid only at 155.52 MHz - supports flexible clock sourcing from system backplane or oscillator module.
37/38 (DATAOUTN/DATAOUTP)	Differential retimed data output	CML outputs with 850–1100 mV differential swing - drives subsequent logic or laser driver with controlled edge rates (150 ps rise/fall).
40/41 (CLKOUTN/CLKOUTP)	Differential recovered clock output	CML clock output synchronized to input data - provides low-jitter sampling clock for downstream retiming or parallelization.
45 (SDOUT)	Loss-of-signal indicator	LVTTL active-high output signaling input amplitude drop below THRADJ-set threshold - enables automatic fault reporting in optical line cards.
15 (REFSEL)	Reference source select	LVTTL input selecting between on-chip crystal oscillator (REFSEL = 0) or external REFCLK (REFSEL = 1) - simplifies board-level clock architecture.

Key Features

Feature	Design Value
Patented DLL+PLL architecture	Eliminates jitter peaking in closed-loop transfer function, enabling cascade-stable regenerator designs with <0.004 dB peaking.
Adjustable slice level (±100 mV)	Compensates for ASE noise in amplified optical links by shifting quantizer decision threshold without degrading BER.
Programmable LOS detection	Single-resistor threshold setting (0.7–18 mV) with hysteresis up to 9.9 dB - prevents false triggering during transient signal fades.
Integrated 2.5 GHz VCO with fractional divider	Supports OC-3, OC-12, and 15/14 FEC rates from one reference clock - reduces BOM count and layout complexity.
Loopback and squelch modes	Enables high-speed production test (loopback) and safe output disable during LOS (squelch) - improves system reliability and test coverage.

Applications

SONET OC-3/OC-12 Receiver	WDM Transponder Line Card
Use Scenario: Recovering clock and data from 155.52 Mbps or 622.08 Mbps optical signals in metro/regional SONET/SDH terminals. IC Role / Device Role / Timing Role: Performs quantization, signal level detect, and jitter-compliant clock/data recovery as the final receive-stage CDR. Use Value: Meets GR-253-CORE jitter transfer (48 kHz/140 kHz BW), generation (0.002 UI rms), and tolerance (50/100 UI p-p) - ensures bit-error-free operation in carrier-grade networks.	Use Scenario: Integrating compact, low-power CDR functionality into pluggable or line-card-based DWDM transponders. IC Role / Device Role / Timing Role: Acts as the core timing recovery engine interfacing with TIA and driving laser modulation circuitry. Use Value: 540 mW power dissipation and 7 mm × 7 mm LFCSP enable high-density transponder designs meeting NEBS Level 3 thermal constraints.
Optical Regenerator/Repeater	Passive Optical Network (PON) OLT
Use Scenario: Restoring signal integrity in long-haul fiber spans where accumulated jitter and attenuation degrade signal eye opening. IC Role / Device Role / Timing Role: Provides jitter filtering and retiming with ultra-low jitter generation to prevent accumulation across cascaded nodes. Use Value: Dual-loop architecture achieves <0.004 dB jitter peaking - critical for maintaining jitter budget in multi-regenerator chains.	Use Scenario: Enabling burst-mode upstream signal recovery in GPON/EPON optical line terminals handling variable-length ONT transmissions. IC Role / Device Role / Timing Role: Delivers fast LOS detection (<300 ns response) and rapid lock acquisition for time-division multiplexed upstream bursts. Use Value: Resistor-programmable LOS threshold (0.7–18 mV) adapts to diverse ONT transmit power levels without firmware changes.

SONET OC-3/OC-12 Receiver

WDM Transponder Line Card

Use Scenario: Recovering clock and data from 155.52 Mbps or 622.08 Mbps optical signals in metro/regional SONET/SDH terminals.

IC Role / Device Role / Timing Role: Performs quantization, signal level detect, and jitter-compliant clock/data recovery as the final receive-stage CDR.

Use Value: Meets GR-253-CORE jitter transfer (48 kHz/140 kHz BW), generation (0.002 UI rms), and tolerance (50/100 UI p-p) - ensures bit-error-free operation in carrier-grade networks.

Use Scenario: Integrating compact, low-power CDR functionality into pluggable or line-card-based DWDM transponders.

IC Role / Device Role / Timing Role: Acts as the core timing recovery engine interfacing with TIA and driving laser modulation circuitry.

Use Value: 540 mW power dissipation and 7 mm × 7 mm LFCSP enable high-density transponder designs meeting NEBS Level 3 thermal constraints.

Optical Regenerator/Repeater

Passive Optical Network (PON) OLT

Use Scenario: Restoring signal integrity in long-haul fiber spans where accumulated jitter and attenuation degrade signal eye opening.

IC Role / Device Role / Timing Role: Provides jitter filtering and retiming with ultra-low jitter generation to prevent accumulation across cascaded nodes.

Use Value: Dual-loop architecture achieves <0.004 dB jitter peaking - critical for maintaining jitter budget in multi-regenerator chains.

Use Scenario: Enabling burst-mode upstream signal recovery in GPON/EPON optical line terminals handling variable-length ONT transmissions.

IC Role / Device Role / Timing Role: Delivers fast LOS detection (<300 ns response) and rapid lock acquisition for time-division multiplexed upstream bursts.

Use Value: Resistor-programmable LOS threshold (0.7–18 mV) adapts to diverse ONT transmit power levels without firmware changes.

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
MAX3675	Single-rate (OC-48 only), no integrated limiting amplifier, requires external amplifier stage; 3.3 V supply, 64-pin QFN.	Targeted at higher-speed OC-48 systems; lacks multirate flexibility and LOS programmability of ADN2807ACPZ.	Select MAX3675 only when OC-48 rate is fixed and external amplification is already present in signal chain.
LMH0384	SMPTE-compliant HD/SD-SDI CDR, not SONET-certified; supports 270 Mbps–2.97 Gbps, no FEC rate support.	Designed for broadcast video infrastructure, not telecom optical transport; lacks GR-253 compliance and LOS hysteresis control.	Choose LMH0384 for video over fiber applications requiring SMPTE ST 292/424 compliance, not for SONET/SDH deployment.

Compared with MAX3675 and LMH0384, the ADN2807ACPZ uniquely combines SONET-certified multirate CDR, integrated limiting amplifier, and resistor-programmable LOS detection - making it the only option qualified for OC-3/OC-12 FEC regenerator and WDM transponder line card designs requiring Telcordia GR-253 compliance.

Availability

ADN2807ACPZ is available at Aetrix Electronics and suitable for SONET/SDH optical receivers, WDM transponder modules, and passive optical network (PON) line cards requiring stable component supply across extended product lifecycles.

Supply support for ADN2807ACPZ 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 ADN2807ACPZ belongs to Analog Devices' optical networking product line, engineered specifically for SONET/SDH and WDM system applications requiring jitter-compliant clock and data recovery with integrated signal conditioning.

FAQ

What data rates does the ADN2807ACPZ support?

The ADN2807ACPZ supports OC-3 (155.52 MHz), OC-12 (622.08 MHz), and their corresponding 15/14 FEC rates (166.63 MHz and 666.51 MHz) via SEL[1:0] pin configuration. It meets all SONET jitter specifications at these rates and uses a single-reference clock architecture - eliminating the need to change reference frequency when switching between OC-3 and OC-12 operation. The ADN2807ACPZ does not support OC-48 or higher rates.

How is loss-of-signal (LOS) detection configured on the ADN2807ACPZ?

LOS detection on the ADN2807ACPZ is configured by connecting an external resistor from pin THRADJ (Pin 1) to GND. Resistor values from 2 kΩ to 90 kΩ program the trip point from 9.4 mV to 0.7 mV, respectively. The SDOUT pin (Pin 45) asserts high when input amplitude falls below this threshold. Hysteresis ranges from 3.4 dB to 9.9 dB depending on data rate and resistor value - preventing chatter during marginal signal conditions. The ADN2807ACPZ requires SLICEP/N pins to be tied to VCC when LOS is enabled.

Does the ADN2807ACPZ require an external crystal oscillator?

The ADN2807ACPZ supports both external reference clocks and an on-chip oscillator. When REFSEL (Pin 15) is low, the device uses the internal oscillator with an external crystal connected to XO1/XO2 (Pins 11/12); when REFSEL is high, it accepts differential LVPECL/LVDS/LVCMOS clocks on REFCLKP/N (Pins 14/13). The on-chip oscillator option eliminates the need for a separate clock generator but requires a 19.44 MHz fundamental-mode crystal. The ADN2807ACPZ does not support third-overtone crystals.

What are the power supply requirements for the ADN2807ACPZ?

The ADN2807ACPZ operates from a single 3.3 V supply with allowable range of 3.0 V to 3.6 V. Total supply current is 150 mA to 215 mA depending on operating conditions, resulting in typical power dissipation of 540 mW. Multiple VCC (Pins 2, 20, 26, 28, 35, 36, 47) and VEE (Pins 3, 9, 16, 19, 22, 27, 29, 33, 34, 42, 43, 46) pins must be properly decoupled: VREF (Pin 4) requires a 0.1 µF capacitor to GND, and CF1/CF2 (Pins 21/25) need 4.7 µF loop filter capacitors. The ADN2807ACPZ specifies performance over –40°C to +85°C ambient.

Can the ADN2807ACPZ be used in DC-coupled input configurations?

Yes, the ADN2807ACPZ supports DC-coupled inputs on PIN/NIN (Pins 5/6) provided the input common-mode voltage remains ≥0.4 V and ≤1.2 V. The internal 50 Ω termination is referenced to VREF ≈ 0.6 V, so DC biasing must maintain this range. AC coupling is recommended for optimal sensitivity and noise immunity, especially in high-ASE environments. When using DC coupling, the ADN2807ACPZ retains full specification compliance for input sensitivity (4 mV p-p typical), but LOS response time becomes dominated by internal circuitry (~300 ns) rather than external RC constants.

ADN2807ACPZ Specifications

Product attributes: Attribute value

Manufacturer:: Analog Devices Inc.

Series:: -

Package/Case:: 48-WFQFN Exposed Pad, CSP

Packaging:: Bulk

Product Status:: Active

Programmable:: Not Verified

PLL:: Yes

Main Purpose:: SONET/SDH, STM

Input:: CML

Output:: CML

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:: 48-LFCSP (7x7)

ADN2807ACPZ FAQ

1.How can I place an order for ADN2807ACPZ through Aetrix?

Please submit a Request for Quotation (RFQ) for ADN2807ACPZ 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 ADN2807ACPZ reliable?

The price and inventory of ADN2807ACPZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADN2807ACPZ is usually 5 days.

3.What payment methods are accepted for ADN2807ACPZ?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADN2807ACPZ transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for ADN2807ACPZ?

ADN2807ACPZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ADN2807ACPZ 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 ADN2807ACPZ?

For technical support, including ADN2807ACPZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADN2807ACPZ requirements.

6.How does Aetrix verify that ADN2807ACPZ is sourced from the original manufacturer or authorized distributors?

All ADN2807ACPZ 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 ADN2807ACPZ meets industry standards.

7.What is the process for return or replacement of ADN2807ACPZ?

All ADN2807ACPZ units undergo pre-shipment inspection (PSI). If there is an issue with ADN2807ACPZ, 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 ADN2807ACPZ part is unused and in its original packaging.

Return procedure for ADN2807ACPZ:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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