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Infineon Technologies CY29411LXI001
- Part No.:
- CY29411LXI001
- Manufacturer:
- Infineon Technologies
- Package:
- -
- Datasheet:
-
CY29411LXI001.pdf
- Description:
- IC VCXO CML HCSL LVDS LVPECL
- Quantity:
- Payment:
- Shipping:
Inventory:4,708
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Product details
Overview
CY29411LXI001 from Infineon Technologies (formerly Cypress) is a high-performance programmable fractional-N PLL oscillator with integrated crystal, delivering differential clock outputs from 15 MHz to 2.1 GHz. It supports LVPECL/LVDS/HCSL/CML standards, operates at 1.8 V/2.5 V/3.3 V, and achieves 150 fs typical integrated jitter (12 kHz–20 MHz) for >150 MHz outputs. Its VCXO function provides ±50 ppm to ±275 ppm total pull range, making it suitable for OTN, SONET/SDH, and high-speed data converter timing.
For engineers reviewing the CY29411LXI001 datasheet, CY29411LXI001 pinout, CY29411LXI001 application, or CY29411LXI001 equivalent, key selection criteria include output standard configurability via I²C, guaranteed jitter performance across full frequency range, VCXO tunability with stable Kv over temperature, and OTP-based factory programming capability for production-ready clock synthesis.
Technical Context
The CY29411LXI001 implements a fully integrated LC-VCO-based fractional-N PLL architecture with on-die crystal oscillator input (XIN/XOUT), eliminating external crystal load capacitors. Its digital configuration engine uses one-time programmable NVM for persistent settings and volatile NVMCopy memory for runtime I²C updates.
It supports dual-mode operation: fixed-frequency oscillator mode using internal crystal reference, and voltage-controlled oscillator mode via VC pin with linear Kv slope and programmable modulation bandwidth. Output dividers and drivers are configurable per channel for true/complement (CLKP/CLKN) differential signaling with selectable OE polarity and I²C address.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Frequency Range | 15 MHz to 2.1 GHz - enables single-device coverage of telecom, networking, and ADC/DAC sampling clocks |
| Integrated Jitter (12 kHz–20 MHz) | 150 fs typical for outputs >150 MHz - meets OC-192/STM-64 and JESD204B Class B requirements |
| VCXO Total Pull Range | ±50 ppm to ±275 ppm - supports precise system-level frequency trimming without crystal replacement |
| Supply Voltage Options | 1.8 V / 2.5 V / 3.3 V - interoperable with modern SoC I/O domains and legacy interface standards |
| Output Standards | LVPECL, LVDS, HCSL, CML - eliminates need for external level-shifting or fanout buffers |
| Operating Temperature | –40 °C to +105 °C - qualified for industrial and telecom infrastructure environments |
| I²C Interface Speed | Fast Mode (400 kbps) - enables in-system reconfiguration during board bring-up or field calibration |
Pinout & Package
Package: 8-pin LCC (7.0 × 5.0 mm), RoHS-compliant, surface-mount ceramic leadless chip carrier with exposed pad not present.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OE | Output Enable input | Active-low (default) or active-high programmable control to mute CLKP/CLKN simultaneously |
| NC | No-connect terminal | Internally unconnected; must be left floating or tied to GND per layout guidelines |
| GND | Supply ground | Dedicated analog/digital return path; requires low-inductance connection to PCB ground plane |
| CLKN | Complement clock output | Differential pair leg supporting LVPECL/LVDS/HCSL/CML; matched routing required |
| CLKP | True clock output | Differential pair leg; phase-aligned with CLKN and referenced to same VDD/GND |
| VDD | Core power supply | Single-supply input supporting 1.8 V/2.5 V/3.3 V; requires local 100 nF + 10 µF decoupling |
| SDA | I²C serial data line | Open-drain bidirectional bus line; requires external 4.7 kΩ pull-up to VDD |
| SCL | I²C serial clock line | Input-only clock line; driven by host controller; 400 kbps timing compliance required |
Key Features
| Feature | Design Value |
|---|---|
| Fractional-N PLL with integrated LC-VCO | Eliminates external loop filter components and enables fine frequency resolution down to 2 ppb |
| Field-programmable output standards | Single device supports LVPECL, LVDS, HCSL, or CML without hardware change or BOM update |
| VCXO with programmable Kv and TPR | Linear voltage-to-frequency response with stable slope across –40 °C to +105 °C for synchronous timing systems |
| OTP NVM + volatile NVMCopy architecture | Enables factory pre-programming for production release and in-system tuning via I²C without reprogramming OTP |
| Small-change frequency update (<±500 ppm) | Glitch-free transition between frequencies - critical for hitless clock switching in telecom line cards |
Applications
| OTN Line Card Timing | High-Speed Data Converter Clocking |
|---|---|
|
Use Scenario: Synchronous Ethernet transport in 100G/400G OTN line cards requiring jitter-clean 156.25 MHz and 311.04 MHz clocks. IC Role / Device Role / Timing Role: Primary clock synthesizer generating multiple phase-aligned outputs from single crystal reference. Use Value: 150 fs integrated jitter ensures BER < 10⁻¹² at 100G KR4 and complies with ITU-T G.8262 eECR requirements. |
Use Scenario: Sampling clock source for 16-bit, 250 MSPS ADCs in radar and test instrumentation systems. IC Role / Device Role / Timing Role: Low-phase-noise clock generator directly driving ADC sampling input with minimal additive jitter. Use Value: Sub-200 fs jitter preserves ENOB > 14.5 bits and avoids SNR degradation in wideband RF digitization. |
| Wireless Baseband Synchronization | Synchronous Timing for Industrial PLCs |
|
Use Scenario: Multi-band wireless infrastructure (5G NR, LTE-A) requiring flexible clock generation for BBICs and FPGAs. IC Role / Device Role / Timing Role: Reconfigurable clock source supporting dynamic frequency scaling across different air interface standards. Use Value: I²C-based small/large change commands enable real-time clock adaptation without system reset or service interruption. |
Use Scenario: Deterministic time synchronization in PROFINET IRT or EtherCAT-enabled industrial controllers. IC Role / Device Role / Timing Role: VCXO-mode clock generator locked to master PTP grandmaster via analog control voltage feedback. Use Value: ±275 ppm TPR and stable Kv allow sub-microsecond phase alignment under varying thermal and supply conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar programmable oscillator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Si5338A-D-GM | Multi-output (4x) I²C-programmable clock generator; no integrated crystal; requires external XO | Used where multi-frequency synthesis from single reference is needed, not single-output VCXO replacement | Select when needing ≥2 independent outputs or higher integration density; avoid if crystal integration is mandatory |
| ICS8430I-01T | Fixed-frequency LVDS oscillator (no I²C, no VCXO); 156.25 MHz only; 500 fs jitter | Deployed in cost-sensitive, static-clock applications like Gigabit Ethernet PHYs | Select only for non-reconfigurable, single-frequency use cases where jitter budget allows 3× degradation vs. CY29411LXI001 |
Compared with Si5338A-D-GM and ICS8430I-01T, the CY29411LXI001 uniquely combines integrated crystal, VCXO tunability, and single-output ultra-low jitter-making it optimal for space-constrained, field-adjustable timing nodes where external component count and thermal stability are critical.
Availability
CY29411LXI001 is available at Aetrix Electronics and suitable for OTN line cards, high-speed data converter systems, wireless baseband units, and industrial PLC timing requiring stable component supply, long-lifecycle support, and guaranteed parametric performance across temperature.
Supply support for CY29411LXI001 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
Infineon Technologies is a global semiconductor leader headquartered in Munich, Germany, specializing in power systems, sensors, and secure connectivity solutions for automotive, industrial, and communications markets.
The CY2941x series belongs to Infineon's high-performance programmable oscillator product line, designed specifically for applications demanding ultra-low jitter, field-configurable output standards, and integrated VCXO functionality in telecom, test equipment, and high-speed data acquisition.
FAQ
Does CY29411LXI001 require an external crystal?
No. The CY29411LXI001 integrates a fixed-frequency crystal within its 8-pin LCC package and uses it as the PLL reference input. XIN and XOUT pins are internally connected to the crystal; no external crystal or load capacitors are needed. This reduces board area, component count, and layout sensitivity compared to discrete XO+PLL solutions.
Can output frequency be changed in-system after programming?
Yes. Using the I²C interface, users can perform Small Change (±500 ppm max) for glitch-free transitions or Large Change (>±500 ppm) requiring PLL recalibration. Both operations modify volatile NVMCopy memory; factory-programmed OTP settings remain intact unless explicitly rewritten. ClockWizard 2.1 software generates compatible I²C command sequences.
What is the role of the NC pin on CY29411LXI001?
Pin 2 is designated NC (No Connect) and is not bonded internally. It must be left electrically floating - neither tied to VDD nor GND - to prevent unintended coupling or parasitic current paths. PCB layout should avoid routing signals or copper pours adjacent to this pin to maintain signal integrity on neighboring CLKP and CLKN lines.
How does VCXO functionality behave when the VC pin is unused?
When VC is unused, it must be connected to either VDD or GND - never left floating - to prevent noise injection into the VCO control path. In that configuration, VCXO mode is effectively disabled, and the device operates as a fixed-frequency oscillator. The TPR and Kv parameters remain stored but have no effect on output frequency until VC is actively driven.
CY29411LXI001 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- CY2941x
- Package/Case:
- -
- Packaging:
- Tray
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- VCXO
- PLL:
- Yes
- Input:
- -
- Output:
- CML, HCSL, LVDS, LVPECL
- Number of Circuits:
- 1
- Ratio - Input:Output:
- 1:1
- Differential - Input:Output:
- No/No
- Frequency - Max:
- 2.1GHz
- Divider/Multiplier:
- Yes/No
- Voltage - Supply:
- 1.71V ~ 3.63V
- Operating Temperature:
- -40°C ~ 105°C
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- -
CY29411LXI001 FAQ
1.How can I place an order for CY29411LXI001 through Aetrix?
Please submit a Request for Quotation (RFQ) for CY29411LXI001 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 CY29411LXI001 reliable?
The price and inventory of CY29411LXI001 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY29411LXI001 is usually 5 days.
3.What payment methods are accepted for CY29411LXI001?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY29411LXI001 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY29411LXI001?
CY29411LXI001 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY29411LXI001 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 CY29411LXI001?
For technical support, including CY29411LXI001 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY29411LXI001 requirements.
6.How does Aetrix verify that CY29411LXI001 is sourced from the original manufacturer or authorized distributors?
All CY29411LXI001 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 CY29411LXI001 meets industry standards.
7.What is the process for return or replacement of CY29411LXI001?
All CY29411LXI001 units undergo pre-shipment inspection (PSI). If there is an issue with CY29411LXI001, 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 CY29411LXI001 part is unused and in its original packaging.
Return procedure for CY29411LXI001:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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