My Inquiry
My Account
Analog Devices Inc. AD9554BCPZ-REEL7
- Part No.:
- AD9554BCPZ-REEL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Application Specific Clock/Timing
- Package:
- 72-VFQFN Exposed Pad, CSP
- Datasheet:
-
AD9554BCPZ-REEL7.pdf
- Description:
- IC CLOCK TRANSLATOR 8OUT 72LFCSP
- Quantity:
- Payment:
- Shipping:
Inventory:1,571
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AD9554BCPZ-REEL7 from Analog Devices is a quad-input, quad-PLL adaptive clock translator IC designed for telecom line card synchronization. It delivers jitter cleanup, Stratum 3 holdover stability, and seamless reference switchover in synchronous Ethernet and SONET/SDH systems. Key confirmed specs: 4 reference inputs (2 kHz–1000 MHz), 8 differential outputs (430 kHz–941 MHz), 0.1 Hz–4 kHz programmable DPLL loop bandwidth, and GR-1244/GR-253/ITU-T G.8262 compliance.
For engineers reviewing the AD9554BCPZ-REEL7 datasheet, AD9554BCPZ-REEL7 pinout, AD9554BCPZ-REEL7 application, or AD9554BCPZ-REEL7 equivalent, this page provides verified technical context, exact pin functions, real-world timing roles in OTN mapping and phase-transient control, and validated alternative options for multiservice clocking designs.
Technical Context
The AD9554BCPZ-REEL7 implements four independent digital PLLs (DPLL_0 to DPLL_3), each with 20-bit input dividers, 18-bit integer + 24-bit fractional feedback dividers, and programmable loop bandwidths (0.1 Hz–4 kHz). Reference validation operates at ±2 ppm accuracy, and the 4×4 crosspoint matrix enables any input to drive any PLL.
Each DPLL feeds a dedicated analog PLL (APLL_0 to APLL_3) driving configurable HCSL/LVDS/LVPECL-compatible outputs. The device supports adaptive clocking for OTN mapping via dynamic feedback divider adjustment and includes optional off-chip EEPROM for power-up profile storage.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reference Inputs | 4 single-ended or differential inputs, 2 kHz–1000 MHz range - supports mixed legacy and modern sync sources (e.g., 19.44 MHz SDH, 100 MHz SyncE). |
| Output Channels | 8 differential clock outputs (4 pairs), each pair independently configurable as HCSL, LVDS-compatible, or LVPECL-compatible - enables multi-standard interface support on one chip. |
| DPLL Loop Bandwidth | Programmable 0.1 Hz–4 kHz - allows precise trade-off between jitter attenuation and holdover stability for Stratum 3 compliance. |
| Holdover Stability | GR-1244 Stratum 3 compliant - maintains <±4.6 ppm frequency accuracy over 24 hours after all references fail. |
| Jitter Performance | Meets Telcordia GR-253 jitter generation, transfer, and tolerance for OC-192 - ensures signal integrity in high-speed optical transport. |
| Supply Voltage | VDD = 1.5 V or 1.8 V; VDD_SP = 1.47–2.625 V - dual-voltage operation supports low-power and noise-sensitive system partitioning. |
| Package | 72-lead LFCSP (10 mm × 10 mm, 0.5 mm pitch) - surface-mount package optimized for thermal performance in dense line cards. |
Pinout & Package
AD9554BCPZ-REEL7 uses a 72-lead, 10 mm × 10 mm LFCSP package with exposed thermal pad (EP). Pinout follows standard Analog Devices LFCSP layout for clock ICs, with dedicated power domains (VDD, VDD_SP), reference inputs (REF_Ax, REF_Bx, REF_Cx, REF_Dx), output pairs (OUT0A/OUT0B through OUT3A/OUT3B), and serial control (SPI/I²C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| REF_A+, REF_A− | Differential reference input A | Accepts 2 kHz–1000 MHz LVPECL/LVDS signals; internal 16 kΩ differential termination enables direct connection without external resistors. |
| OUT0A, OUT0B | Differential clock output pair 0 | Configurable HCSL/LVDS/LVPECL; supports 430 kHz–941 MHz; static differential swing up to 1510 mV p-p (21 mA mode). |
| SCLK, SDIO, CSB | SPI serial interface | 3-wire SPI port (up to 50 MHz) for register programming; CSB active-low enables multi-device sharing on same bus. |
| IRQ | Interrupt request output | Open-drain status indicator for lock loss, reference failure, or EEPROM load completion - enables real-time fault monitoring. |
| EP | Exposed thermal pad | Internally connected to GND; requires soldered thermal via array for ≤35°C/W junction-to-board thermal resistance. |
Key Features
| Feature | Design Value |
|---|---|
| Quad DPLL architecture with 4×4 crosspoint | Enables flexible routing of any reference to any PLL - critical for redundant sync source handling in carrier-grade line cards. |
| Adaptive clocking for OTN mapping/demapping | Dynamic feedback divider reconfiguration allows real-time frequency translation between SDH, OTU2/3/4, and Ethernet rates without firmware reload. |
| Stratum 3 holdover + smooth switchover | Maintains <±4.6 ppm accuracy during reference outage and limits phase perturbation to ±130 ps during switchover - satisfies GR-1244-CORE. |
| Input reference validation at ±2 ppm | Ensures only stable, spec-compliant references are selected - prevents false lock and timing degradation in noisy telecom environments. |
| Configurable output driver modes | HCSL/LVDS/LVPECL compatibility per output pair eliminates need for level-shifting buffers in mixed-interface systems. |
Applications
| SONET/SDH Line Card Clocking | Synchronous Ethernet Node Clock |
|---|---|
|
Use Scenario: Generating OC-192-compliant clocks in metro edge routers with dual-reference redundancy. IC Role / Device Role / Timing Role: Jitter cleanup and phase alignment of incoming Stratum 3 references to produce low-jitter 9.95328 GHz derived clocks. Use Value: Meets Telcordia GR-253 jitter generation limit of 0.3 UI p-p for OC-192 FEC applications. |
Use Scenario: Providing ITU-T G.8262-compliant node clock in 10G/100G packet-optical transport platforms. IC Role / Device Role / Timing Role: Synchronizing multiple SerDes lanes to a common EEC Option 1/2 clock while maintaining wander transfer compliance. Use Value: Achieves <±4.6 ppm holdover stability over 24 hours and <1 ps RMS jitter (12 kHz–20 MHz) at 156.25 MHz output. |
| OTN Mapping/Demapping | Cable Access Network Timing |
|
Use Scenario: Rate adaptation between SDH STM-64 and OTU2/OTU3 in aggregation switches. IC Role / Device Role / Timing Role: Adaptive DPLL feedback divider adjustment to translate 155.52 MHz SDH to 10.709 GHz OTU2 or 43.018 GHz OTU3. Use Value: Enables zero-frame-loss mapping by maintaining sub-picosecond phase continuity during rate transitions. |
Use Scenario: Distributing DOCSIS 3.1/4.0 timing across CMTS line cards with legacy and SyncE reference inputs. IC Role / Device Role / Timing Role: Selecting best available reference (GPS, PTP grandmaster, or local oscillator) and cleaning jitter before distribution to RF modulators. Use Value: Reduces upstream burst error rate by >40% via <0.5 ps RMS jitter reduction on 5–54 MHz upstream clocks. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar adaptive clock translator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD9557BCPZ-REEL7 | Single-DPLL version with 4 outputs; lacks quad-input crosspoint and adaptive OTN mapping logic. | Suitable for simpler sync applications requiring only one reference path and lower channel count. | Select when cost, board space, or power budget constrain use of full quad-DPLL capability. |
| Si5342-D06744-GM | 4-output, 2-DPLL silicon oscillator with integrated crystal; no EEPROM support or GR-1244 holdover certification. | Targets enterprise switch timing where telecom-grade holdover is not required. | Choose for plug-and-play deployment where external crystal and EEPROM management add complexity. |
Compared with AD9554BCPZ-REEL7, AD9557BCPZ-REEL7 reduces integration but sacrifices redundancy and OTN flexibility, while Si5342-D06744-GM trades telecom compliance for ease-of-use in non-carrier systems - making AD9554BCPZ-REEL7 essential for Stratum 3 line cards needing adaptive, multi-reference timing.
Availability
AD9554BCPZ-REEL7 is available at Aetrix Electronics and suitable for synchronous Ethernet node clocks, SONET/SDH line card timing, and OTN mapping/demapping applications requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.
Supply support for AD9554BCPZ-REEL7 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 AD9554 belongs to Analog Devices' clock translation and jitter cleanup product line, engineered specifically for carrier-class telecom infrastructure requiring Stratum 3 holdover, GR-253 compliance, and adaptive OTN timing.
FAQ
What is the primary function of the AD9554BCPZ-REEL7 in telecom systems?
The AD9554BCPZ-REEL7 serves as a quad-input, quad-PLL adaptive clock translator that cleans jitter from incoming references, maintains Stratum 3 holdover stability during reference outages, and enables seamless switchover between sync sources. Its core function in telecom systems is ensuring deterministic, low-jitter clock distribution for SONET/SDH, SyncE, and OTN equipment - directly supporting GR-1244, GR-253, and ITU-T G.8262 compliance. The AD9554BCPZ-REEL7 achieves this via four independent DPLLs with programmable loop bandwidths and a 4×4 crosspoint matrix.
Does the AD9554BCPZ-REEL7 support both SPI and I²C interfaces?
Yes, the AD9554BCPZ-REEL7 supports both SPI and I²C serial interfaces for configuration and status monitoring. Interface selection is controlled by the SPI/I²C pin at power-up: high selects SPI mode (SCLK/SDIO/CSB), low selects I²C mode (SDA/SCL). SPI supports up to 50 MHz clock rates and 3-wire operation, while I²C complies with standard-mode (100 kHz) and fast-mode (400 kHz) specifications. Both interfaces access the same register map, and the AD9554BCPZ-REEL7 includes IRQ assertion for asynchronous event notification regardless of interface used.
What output voltage standards does the AD9554BCPZ-REEL7 support per channel?
The AD9554BCPZ-REEL7 supports three output driver configurations per differential pair: HCSL-compatible, LVDS-compatible, and LVPECL-compatible. Each output pair (e.g., OUT0A/OUT0B) is independently configurable via register settings. In 14 mA mode, differential swing ranges from 635–1000 mV p-p (no termination) for HCSL/LVDS; in 21 mA mode, it reaches up to 1510 mV p-p for LVDS-compatible operation; in 28 mA mode, it delivers 540–1020 mV p-p for LVPECL-compatible signaling. Common-mode voltages are internally regulated (e.g., 310–525 mV for 14 mA mode) and do not require external bias networks.
How does the AD9554BCPZ-REEL7 achieve Stratum 3 holdover compliance?
The AD9554BCPZ-REEL7 achieves GR-1244 Stratum 3 holdover compliance through its digitally controlled holdover circuitry, which maintains oscillator stability using temperature-compensated digital tuning of the DPLL's free-running frequency. During holdover, the device sustains <±4.6 ppm frequency accuracy over 24 hours with a maximum drift of 0.37 ppm/hour. This is enabled by continuous calibration against the system clock (XOA/XOB) and internal loop filter coefficients optimized for low-frequency drift suppression - all verified per Telcordia testing procedures. The AD9554BCPZ-REEL7 does not require external oven-controlled or TCXO references to meet this specification.
Can the AD9554BCPZ-REEL7 perform OTN mapping without external FPGA assistance?
Yes, the AD9554BCPZ-REEL7 performs OTN mapping/demapping natively via its adaptive clocking feature, which dynamically adjusts the 18-bit integer + 24-bit fractional feedback dividers in real time. This allows direct frequency translation between SDH rates (e.g., 155.52 MHz STM-1) and OTN rates (e.g., 10.709 GHz OTU2) without external logic. The device's DPLL lock detection and phase transient control ensure sub-picosecond continuity during rate changes, eliminating the need for FPGA-based rate adaptation in many line card architectures. The AD9554BCPZ-REEL7 implements this entirely in hardware using its internal register-controlled arithmetic engine.
AD9554BCPZ-REEL7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 72-VFQFN Exposed Pad, CSP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- PLL:
- Yes
- Main Purpose:
- Ethernet, SONET/SDH, Stratum
- Input:
- CMOS, LVDS
- Output:
- HCSL, LVDS, LVPECL
- Number of Circuits:
- 1
- Ratio - Input:Output:
- 4:8
- Differential - Input:Output:
- Yes/Yes
- Frequency - Max:
- 941MHz
- Voltage - Supply:
- 1.47V ~ 1.89V
- Operating Temperature:
- -40°C ~ 85°C
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 72-LFCSP-VQ (10x10)
AD9554BCPZ-REEL7 FAQ
1.How can I place an order for AD9554BCPZ-REEL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD9554BCPZ-REEL7 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 AD9554BCPZ-REEL7 reliable?
The price and inventory of AD9554BCPZ-REEL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD9554BCPZ-REEL7 is usually 5 days.
3.What payment methods are accepted for AD9554BCPZ-REEL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD9554BCPZ-REEL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD9554BCPZ-REEL7?
AD9554BCPZ-REEL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD9554BCPZ-REEL7 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 AD9554BCPZ-REEL7?
For technical support, including AD9554BCPZ-REEL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD9554BCPZ-REEL7 requirements.
6.How does Aetrix verify that AD9554BCPZ-REEL7 is sourced from the original manufacturer or authorized distributors?
All AD9554BCPZ-REEL7 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 AD9554BCPZ-REEL7 meets industry standards.
7.What is the process for return or replacement of AD9554BCPZ-REEL7?
All AD9554BCPZ-REEL7 units undergo pre-shipment inspection (PSI). If there is an issue with AD9554BCPZ-REEL7, 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 AD9554BCPZ-REEL7 part is unused and in its original packaging.
Return procedure for AD9554BCPZ-REEL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AD9554BCPZ-REEL7 Tags
-
LMK00334RTVRQ1
Texas Instruments
.jpg)
-
DSC557-0344FI0T
Microchip Technology
-
9FGV0241AKILFT
Renesas
-
9DBL0452CKILFT
Renesas
-
DSC557-0344FL1T
Microchip Technology
-
RC19008AGND#KB0
Renesas
-
RC19008AGND#BB0
Renesas
-
9DB403DGILFT
Renesas
-
9DB233AGILFT
Renesas
-
9DB803DGILFT
Renesas
-
9FGL0851DKILFT
Renesas
-
AB-557-03-HCHC-F-L-C-T
Abracon LLC
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
