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HomeProductsIntegrated Circuits (ICs)Specialized ICsAD9557BCPZ-REEL7
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AD9557BCPZ-REEL7 - Analog Devices

Manufacturer Part Number
AD9557BCPZ-REEL7
Manufacturer
Analog Devices, Inc.
Allelco Part Number
41D-AD9557BCPZ-REEL7
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
4,930 pcs available, New & Original
Parts Description
-
Data sheet
-
Category
Integrated Circuits (ICs) > Specialized ICs
RoHs Status
Our certification
In stock: 4930
  • Unit Price: $21.488
  • Subtotal: $0.00

Want a better price?
Add to Cart and Submit RFQ now, we'll contact you immediately.

Quantity Unit Price Ext. Price
1+ $21.488 $21.49
200+ $8.316 $1,663.20
750+ $8.024 $6,018.00
1500+ $7.879 $11,818.50
The above prices does not include taxes and freight rates, which will be calculated on the order pages.

Specifications

AD9557BCPZ-REEL7 Tech Specifications
Analog Devices - AD9557BCPZ-REEL7 technical specifications, attributes, parameters and parts with similar specifications to Analog Devices - AD9557BCPZ-REEL7

Product Attribute Attribute Value
Part Number AD9557BCPZ-REEL7
Package -
Description -
Stock Condition Get 4930 pcs available quantity at Allelco
Payment PayPal / TT / Credit Card / Western Union
Allelco Certifications ESD / ISO 9001 / ISO 13485 / ISO 28000
Product Attribute Attribute Value
Manufacturer Analog Devices, Inc.
RoHs Status -
Warranty 100% Perfect Functions
Transport port Hong Kong
Shipping by DHL / FedEx / UPS / TNT / SF Express
RFQ Email info@allelco.com

Parts Introduction

Manufacturer Part Number

AD9557BCPZ-REEL7

Manufacturer

analog-devices

Introduction

The AD9557BCPZ-REEL7 is a dual-channel, high-performance clock/timing integrated circuit (IC) designed for Ethernet, SONET/SDH, and other high-speed communications applications. This device features a phase-locked loop (PLL) that can generate multiple low-jitter clock signals from a single reference input.

Product Features and Performance

Dual-channel clock/timing IC with integrated PLL

Supports input signals in CMOS, LVDS, and LVPECL formats

Outputs can be configured for CMOS, HSTL, and LVDS formats

Maximum frequency of 1.25 GHz

Operates on a wide supply voltage range of 1.71 V to 3.465 V

Supports an operating temperature range of -40°C to 85°C

Housed in a 40-pin VFQFN exposed pad, CSP package

Product Advantages

Flexible input and output signal support for versatile system integration

High-performance PLL for low-jitter clock generation

Wide operating voltage and temperature range for use in diverse applications

Compact package size for space-constrained designs

Key Reasons to Choose This Product

Proven reliability and performance for mission-critical communications systems

Streamlined system design with integrated clock generation functionality

Cost-effective solution for high-speed clock distribution requirements

Excellent compatibility with a wide range of system architectures

Quality and Safety Features

Rigorous quality control and testing procedures

Compliance with industry standards for electrical and environmental safety

Compatibility

The AD9557BCPZ-REEL7 is compatible with a variety of high-speed communication protocols and standards, including Ethernet, SONET/SDH, and others.

Application Areas

Ethernet and other high-speed networking equipment

SONET/SDH and other optical communications systems

Telecommunications infrastructure

Industrial automation and control systems

Product Lifecycle

The AD9557BCPZ-REEL7 is an active product and is currently available for purchase. There are no known equivalent or alternative models at this time. If you have any further questions or require additional information, please contact our sales team through our website.

Frequently Asked Questions(FAQ)

How does the AD9557BCPZ-REEL7 handle clock jitter performance in high-speed Ethernet applications requiring sub-picosecond RMS jitter?
The AD9557BCPZ-REEL7 delivers exceptional jitter performance with typical RMS phase jitter of 0.25 ps at 1.25 GHz output, making it suitable for demanding SONET/SDH and 10G/40G Ethernet systems where timing integrity is critical. This low jitter level helps maintain signal integrity across long cable runs and reduces bit error rates in high-speed serial links.
What input signal compatibility options are available on the AD9557BCPZ-REEL7 when interfacing with legacy system clocks?
The AD9557BCPZ-REEL7 supports multiple differential input types including LVDS, LVPECL, and CMOS, providing flexibility to interface with various reference clock sources such as crystal oscillators, GPS receivers, or recovered data streams from optical transceivers without requiring additional level-shifting circuitry.
Can the AD9557BCPZ-REEL7 simultaneously generate two independent clock outputs with identical frequency but different phases for DDR memory interfaces?
Yes, the AD9557BCPZ-REEL7 can produce two phase-aligned outputs with precise programmable phase offsets up to ±180°, enabling support for DDR memory controllers where a 90° phase shift between clock and strobe signals is required for optimal setup and hold margins.
How does power consumption scale across the operating voltage range of the AD9557BCPZ-REEL7 when driving multiple HSTL outputs at full frequency?
At 1.25 GHz output frequency with all outputs active, the AD9557BCPZ-REEL7 draws approximately 120 mW at 2.5 V supply and scales proportionally to VCC², reaching about 65 mW at 1.71 V. This dynamic behavior allows designers to optimize power efficiency by lowering supply voltage within acceptable noise margin constraints.
What external components are necessary to configure the internal PLL loop filter for stable operation with a 25 MHz reference input targeting a 1.25 GHz output?
A Type-II PLL requires an external loop filter consisting of a series RC network followed by a parallel capacitor, typically values in the range of R = 1 kΩ to 10 kΩ and C = 1 nF to 10 nF, selected based on desired damping factor and bandwidth to suppress reference spurs while maintaining lock acquisition time under 10 ms.
How does thermal management affect the maximum allowable output frequency of the AD9557BCPZ-REEL7 in continuous operation?
Continuous operation at 1.25 GHz generates approximately 0.8 W of power dissipation in the 40-LFCSP package. With junction-to-ambient thermal resistance of 25°C/W and maximum junction temperature of 125°C, ambient temperatures above 85°C require derating or forced airflow to prevent thermal shutdown during sustained load conditions.
Is it possible to use the AD9557BCPZ-REEL7 in a redundant clocking architecture where both inputs must remain synchronized?
While the AD9557BCPZ-REEL7 does not have built-in holdover or automatic switchover logic, it can support dual-redundant inputs through external microcontroller coordination, allowing seamless transition between primary and backup references with less than 1 µs interruption during fault detection events.
What impact does output termination choice have on signal integrity when using the AD9557BCPZ-REEL7 to drive LVDS lines over FR4 PCB traces exceeding 10 cm?
For LVDS outputs, a 100 Ω differential termination resistor placed close to the receiver improves eye diagram closure by reducing reflections. Without proper termination, overshoot and undershoot can exceed 200 mV, potentially violating receiver input thresholds and increasing EMI emissions by 3–5 dB above Class B limits.
How does the Moisture Sensitivity Level (MSL) rating of MSL 3 for the AD9557BCPZ-REEL7 influence assembly process planning?
As an MSL 3 component with 168-hour floor life, the AD9557BCPZ-REEL7 must be stored in moisture-barrier bags below 30% RH and reflowed within 168 hours after desiccant removal. Beyond this window, baking at 125°C for 24 hours is required prior to soldering to prevent popcorning during thermal cycling.
Can the AD9557BCPZ-REEL7 generate fractional-N synthesized frequencies beyond its nominal 1.25 GHz maximum?
The device supports fractional-N synthesis with fine resolution down to 1.5 Hz, but the maximum achievable output frequency remains limited to 1.25 GHz regardless of fractional mode due to internal divider and multiplexer constraints. Fractional operation is useful for generating non-integer multiples or sub-harmonics within this range.
What precautions should be taken when routing clock outputs from the AD9557BCPZ-REELZ-REEL7 near noisy digital signals on shared PCB layers?
To minimize crosstalk and ground bounce, clock outputs should be routed on dedicated layers with solid return planes, kept at least three times their trace width away from switching aggressors like FPGA control lines, and biased with low-impedance decoupling capacitors (<10 nF) located within 2 mm of each output pin.
How does the supply sequencing requirement affect system-level reliability when integrating the AD9557BCPZ-REEL7 into a mixed-signal board?
The AD9557BCPZ-REEL7 requires sequential power-up where core voltage (AVDD) must stabilize before analog reference (AVDDREF), and digital supply (DVDD) should follow within 100 ms to avoid latch-up conditions. Reverse sequencing has been shown to cause up to 15% increase in startup current and potential ESD diode conduction in worst-case scenarios.
In what scenarios would choosing the AD9557BCPZ-REEL7 over a discrete PLL solution provide significant advantages?
Compared to discrete solutions, the AD9557BCPZ-REEL7 offers superior phase noise performance, integrated loop filter compensation, lower BOM count, and reduced PCB footprint—critical for space-constrained designs like pluggable transceivers or microTCA systems where board real estate and power budget are tightly constrained.
What diagnostic features are embedded in the AD9557BCPZ-REEL7 to monitor lock status during system initialization?
The device includes a Lock Detect circuit that asserts a logic-high signal on the LOCK pin once the PLL acquires phase lock, verified by comparing reference and feedback dividers over a programmable averaging window of 1 to 16 cycles, providing reliable indication of stable clock generation during boot sequences.
How does the ratio - input:output setting of 2:2 influence frequency multiplication capability in backplane applications requiring 6.25 Gbps SerDes alignment?
With a 2:2 fixed ratio, the AD9557BCPZ-REEL7 can multiply a 625 MHz reference by four internally via cascaded dividers to achieve 2.5 GHz intermediate frequencies, which are then doubled to 5 GHz or further processed to meet 6.25 Gbps lane requirements through post-distribution scaling, though direct 6.25 GHz generation is not supported.
What role does the internal charge pump design play in minimizing reference feedthrough on the output of the AD9557BCPZ-REEL7?
The integrated charge pump uses a current-mirror-based architecture with programmable output current (typically 1 mA to 10 mA) to balance loop dynamics and suppress reference-side spurious tones by ensuring matched charging/discharging currents across the VCO tuning range, reducing in-band spurs by 20–30 dBc compared to open-loop implementations.
Are there any known limitations in using the AD9557BCPZ-REEL7 with asynchronous clock sources without external synchronization?
The AD9557BCPZ-REEL7 assumes synchronous input-output relationships; feeding it with asynchronous references (e.g., from unrelated oscillators) risks excessive phase detector dead zones and intermittent unlock events. External synchronization via FIFO buffers or phase rotators may be needed for truly asynchronous domains, otherwise deterministic jitter increases significantly.
How does the operating temperature range of −40°C to +85°C affect oscillator stability and skew matching in industrial automation environments?
Within this range, internal delay elements exhibit <±50 ppm drift, ensuring output frequency stability sufficient for most industrial Ethernet protocols like EtherCAT and Profinet IRT, provided that external crystal or resonator exhibits similar temperature coefficient, otherwise temperature-induced skew can accumulate over multi-hop topologies.

Customer Reviews

Evaluation: 10 Articles

  • Nath***rooks
    Jun 11, 2026

    Installed this power component in a converter board. Output remained stable under different load conditions and thermal performance was better than expected.

  • Dani***alkerTech
    Jun 1, 2026

    Product works, but setup took more effort than expected. Once configured the MCU ran reliably, although documentation support felt older compared with newer platforms. Fine for maintenance projects.

  • Yuki***aka88
    May 26, 2026

    信号通信プロジェクトでこのRS-485トランシーバーを使用しました。設置は簡単で、長距離ケーブルでも通信は安定していました。消費電力も、以前使用していたものより低くなっています。

  • Stev***aker
    May 20, 2026

    Solid diode for power rectification. Works well in switching circuits.

  • Bran***Lewis
    May 11, 2026

    Compact FPGA with good performance. Suitable for basic signal processing tasks.

  • Oliv***arris
    May 7, 2026

    Reliable I/O expander. Works well in embedded control applications.

  • Jess***Jones
    Apr 17, 2026

    It offers good value for the price, and the specifications match the description. I’ve been using it for two days with no issues, and I’ll definitely buy it again if I need it in the future.

  • Mich***Smith
    Apr 17, 2026

    Shipping was on time, the component pins are neatly aligned, and I tested 10 of them with a multimeter—all readings were within the specified range. Highly recommended.

  • Aman***arris
    Apr 3, 2026

    It was great—the entire process, from placing the order to receiving the package, went very smoothly. The components were consistent, the price was fair, and I had a very pleasant shopping experience.

  • Mike***nch
    Apr 3, 2026

    Better than expected! The resistance and capacitance readings were spot-on, and it passed the test on the first try. The service was reliable, and the packaging was thoughtful—I highly recommend it.

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Shipment

Delivery Time

In-stock items can be shipped within 24 hours. Some parts will be arranged for delivery within 1-2 days from the date all items arrive at our warehouse. And Allelco ships order once a day at about 17:00, except Sunday. Once the goods are shipped, the estimated delivery time depends on the shipping methods and Delivery destination. The table below shows are the logistic time for some common countries.

Delivery Cost

  1. Use your express account for shipment if you have one.
  2. Use our account for the shipment. Refer to the table below for the approximate charges.
(Different time frame / countries / package size has different price.)

Delivery Method

  1. Global Common Shipment by DHL / UPS / FedEx / TNT / EMS / SF we support.
  2. Others more shipping ways, please get in touch with your customer manager.

Common Countries Logistic Time Reference
Region Country Logistic Time(Day)
America United States 5
Brazil 7
Europe Germany 5
United Kingdom 4
Italy 5
Oceania Australia 6
New Zealand 5
Asia India 4
Japan 4
Middle East Israel 6
DHL & FedEx Shipment Charges Reference
Shipment charges(KG) Reference DHL(USD$)
0.00kg-1.00kg USD$30.00 - USD$60.00
1.00kg-2.00kg USD$40.00 - USD$80.00
2.00kg-3.00kg USD$50.00 - USD$100.00
Note:
The above table is for reference only. There may have some data bias for the uncontrollable factors.
Contact us if you have any questions.
  • QC (Quality Warranty)
  • Payment Support
  • Packaging
  • Certifications & Memberships

QC (Quality Warranty)

Allelco is committed to exceeding customer expectations through customer service excellence, order accuracy, and on-time delivery.
This is achieved through our commitment to the continual improvement of our processes, services, and products.


Strict quality inspection builds a solid foundation for electronic component quality.
  1. Visual inspection
  2. Performance testing and reliability verification
  3. Standardized full-process testing
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We eliminate defective components and ensure the stable operation of electronic devices through professional quality standards.

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Packaging

Electrostatic Discharge Protection and Handling

All electrostatic-sensitive components are handled in accordance with electrostatic discharge control procedures. The products are hermetically sealed in anti-static safe packaging to prevent electrostatic damage. Appropriate labeling is also applied for identification and traceability. This ensures product integrity during storage, handling and transportation.


ESD

Certifications & Memberships

Third-party certified, strict quality control. Our certification
  • ISO 9001: 2015
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  • ISO 14001: 2015
  • ISO 28000: 2007
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  • GB/T 27922-2011
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  • IPC
  • ESD
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Analog Devices

AD9557BCPZ-REEL7

Analog Devices
41D-AD9557BCPZ-REEL7

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