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Infineon Technologies CY22801KFXCT
- Part No.:
- CY22801KFXCT
- Manufacturer:
- Infineon Technologies
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
CY22801KFXCT.pdf
- Description:
- IC FANOUT DIST 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,197
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Product details
Overview
CY22801KFXCT from Cypress Semiconductor is a flash-programmable universal clock generator with integrated PLL, supporting up to three LVCMOS clock outputs (CLKA, CLKB, CLKC), 1–133 MHz input range (crystal or external clock), and programmable spread spectrum (±0.25% to ±2.5%) for EMI reduction. It operates at 3.3 V across industrial temperature range (–40°C to +85°C) in an 8-pin SOIC package, used in consumer audio/video and communications infrastructure timing systems.
For engineers reviewing the CY22801KFXCT datasheet, CY22801KFXCT pinout, CY22801KFXCT application, or CY22801KFXCT equivalent, key selection criteria include I²C-configurable output frequencies, VCXO analog tuning capability (pin 3), spread-spectrum modulation frequency options (30.1/31.5/32.9 kHz), and compatibility with CyClocksRT™-generated JEDEC programming files for production-ready clock synthesis.
Technical Context
The CY22801 implements a proprietary integer-N PLL architecture with dual post-dividers (DIV1N/DIV2N) and a crosspoint switch matrix enabling independent routing of REF, PLL-derived, or bypassed signals to each of three outputs. Its oscillator gain is programmable via register to match crystal load capacitance requirements.
VCXO functionality uses analog voltage on pin 3 to pull crystal frequency within ±200 ppm, while spread spectrum modulates the VCO output uniformly across all outputs-though VCXO and SSCG are mutually exclusive. The device supports volatile I²C programming (address 0x69) and nonvolatile flash configuration via CyClocksRT™ and CY36800 dongle.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Frequency Range | 1–133 MHz (external CLKIN) or 8–30 MHz (crystal XIN/XOUT); enables flexible reference sourcing without external buffers. |
| Output Frequency Max | 200 MHz (commercial), 166.6 MHz (industrial); meets high-speed interface timing (e.g., DDR2 memory clocks, PCIe Gen1). |
| Spread Spectrum Range | ±0.25% to ±2.5% center-spread or –0.5% to –5.0% down-spread; reduces peak EMI by spreading energy across 30–33 kHz band. |
| Modulation Frequency | 30.1 / 31.5 / 32.9 kHz; selectable via register to avoid interference with system noise-sensitive bands. |
| Supply Voltage | 3.3 V ±10%; compatible with standard LDO-regulated digital power rails in embedded and communications boards. |
| Operating Temperature | –40°C to +85°C; qualified for industrial-grade deployment in base stations and set-top boxes. |
| I²C Address | 0x69 (default), reprogrammable; allows coexistence with other I²C peripherals on same bus without address conflict. |
Pinout & Package
Package: 8-pin SOIC (Small Outline Integrated Circuit), JEDEC MS-012AC, body size 4.9 × 3.9 mm, lead pitch 1.27 mm, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (XIN/CLKIN) | Reference input | Accepts either crystal (8–30 MHz) or buffered clock (1–133 MHz); internal oscillator gain configurable per crystal spec. |
| 2 (VDD) | Power supply | 3.3 V main supply; decoupling capacitor required near pin for low-noise PLL operation. |
| 3 (SDAT/FS0/VCXO/OE/PD#) | Multifunction terminal | Configurable as I²C data line, frequency select 0, VCXO analog control (0–3.3 V), output enable, or active-low power-down. |
| 4 (VSS) | Ground | Digital ground reference; must be connected to low-impedance PCB plane for jitter-sensitive clock paths. |
| 5 (CLKB/FS1/SCLK) | Output / control | Primary clock output B or frequency select 1 or I²C clock line; function selected at programming time. |
| 6 (CLKA) | Output | Dedicated LVCMOS clock output A; no multifunction; routed directly from crosspoint matrix. |
| 7 (CLKC/FS2) | Output / control | Third clock output C or frequency select 2; not usable as reference clock output per datasheet restriction. |
| 8 (XOUT) | Crystal output | Drives external crystal; left floating when using external CLKIN; internal load caps reduce BOM count. |
Key Features
| Feature | Design Value |
|---|---|
| Flash-programmable PLL | Nonvolatile configuration retains user-defined frequencies and settings after power cycle, eliminating boot-time I²C initialization. |
| Programmable crystal load capacitance | 8-bit register sets internal parallel-plate capacitors to match crystal CL spec (e.g., 12–20 pF), removing external caps and reducing layout sensitivity. |
| VCXO analog tuning | 0–3.3 V analog input on pin 3 pulls crystal frequency ±200 ppm, enabling precise lock to external master clock in telecom sync applications. |
| Three-output crosspoint matrix | Each output (CLKA/CLKB/CLKC) independently selects source: REF, PLL/VCO, or post-divided PLL, enabling mixed-frequency clock trees from single device. |
| I²C volatile programming | Runtime reconfiguration via standard 2-wire interface (0x69) supports dynamic frequency switching during system test or field firmware updates. |
Applications
| Audio/Video Timing | Communications Baseband |
|---|---|
Use Scenario: Synchronizing HDMI transmitter, video DAC, and audio codec clocks in a set-top box. IC Role / Device Role / Timing Role: Universal clock generator providing three phase-aligned outputs: 27 MHz (video pixel clock), 48 MHz (audio sample clock), and 100 MHz (system bus clock). Use Value: Eliminates multiple discrete oscillators and reduces board space by 60%, while spread spectrum lowers radiated emissions below FCC Class B limits. | Use Scenario: Clocking ADC/DAC, DSP, and FPGA in a 4G LTE small cell radio unit. IC Role / Device Role / Timing Role: Programmable clock source delivering 122.88 MHz (radio sampling), 156.25 MHz (Ethernet PHY), and 10 MHz (reference for PLL clean-up). Use Value: VCXO mode locks 10 MHz output to GPS-disciplined oscillator, achieving <100 ns phase error over temperature for precise time-of-arrival measurement. |
| Industrial Control Network | Consumer Storage Interface |
Use Scenario: Providing synchronized clocks to EtherCAT slave controllers and real-time motion processors in PLC backplane. IC Role / Device Role / Timing Role: Low-jitter clock generator supplying 50 MHz (EtherCAT MAC), 25 MHz (motion controller core), and 12.5 MHz (SPI peripheral bus). Use Value: Industrial temperature rating (–40°C to +85°C) and 3.3 V operation ensure stable timing under factory ambient conditions without thermal derating. | Use Scenario: Generating clocks for SATA controller, USB 3.0 PHY, and NAND flash controller in NAS enclosure. IC Role / Device Role / Timing Role: Single-chip clock source delivering 150 MHz (SATA SerDes), 125 MHz (USB 3.0), and 40 MHz (NAND interface). Use Value: Spread spectrum at 31.5 kHz reduces conducted EMI on shared power rails, passing CISPR 22 Class B without ferrite beads or shielding cans. |
Equivalent & Alternatives
Cypress CY22801KFXCT has two verified functional alternatives with documented differences in configuration method, output flexibility, and feature support.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| IDT 5V41066APFGI | LVDS outputs only; no VCXO; fixed 2-output architecture; requires external EEPROM for nonvolatile config. | Limited to high-speed serial interfaces (e.g., PCIe, SATA); unsuitable for analog-tuned sync or multi-protocol clocking. | Select if LVDS signaling and deterministic startup timing are mandatory, and VCXO/SSCG are unnecessary. |
| ON Semi NB3N3010BDR2G | 3.3 V LVCMOS outputs; no spread spectrum; no VCXO; I²C-only volatile config; no flash memory. | Lower-cost option for static clock trees where EMI reduction and frequency pulling are not required. | Choose for cost-sensitive consumer designs with fixed clock requirements and no need for field reprogramming or EMI mitigation. |
Compared with IDT 5V41066APFGI and ON Semi NB3N3010BDR2G, CY22801KFXCT uniquely combines flash-based nonvolatile configuration, analog VCXO tuning, and programmable spread spectrum-all in a 3-output SOIC package-making it optimal for field-deployable, EMI-constrained, and synchronization-critical systems.
Availability
CY22801KFXCT is available at Aetrix Electronics and suitable for audio/video timing, communications baseband, and industrial control network applications requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for CY22801KFXCT 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
Cypress Semiconductor (now part of Infineon Technologies) is a U.S.-based semiconductor company specializing in programmable system-on-chip (PSoC), memory, and timing solutions for embedded and industrial markets.
The CY22801 belongs to Cypress's Universal Programmable Clock Generator (UPCG) product line, designed specifically for flexible, software-configurable clock synthesis in cost- and space-constrained consumer and communications equipment.
FAQ
What is the default state of CY22801KFXCT after power-up?
When unprogrammed, CY22801KFXCT powers up with all outputs tri-stated, crystal oscillator active, and all registers set to zero. It remains in this state until configured via I²C or programmed with a JEDEC file. Factory-shipped parts are blank; distributors typically pre-program them per customer specifications using CyClocksRT™.
Can CY22801KFXCT generate three unrelated output frequencies?
No-outputs are derived from either the same PLL VCO frequency or the common reference input, so their frequencies must be integer-related. For example, if REF = 25 MHz and PLL generates 500 MHz, CLKA = 500 MHz / 5 = 100 MHz and CLKB = 500 MHz / 8 = 62.5 MHz. True independent synthesis requires separate PLLs, which CY22801 does not provide.
How is spread spectrum enabled and controlled on CY22801KFXCT?
Spread spectrum is enabled by programming the SSCG register bits and assigning one multifunction pin (e.g., pin 3 or 5) as SSON. When SSON = 1, modulation is active on all outputs simultaneously. Modulation depth (±0.25% to ±2.5%) and frequency (30.1/31.5/32.9 kHz) are set via dedicated registers; VCXO and SSCG cannot operate concurrently.
Is external crystal load capacitance required for CY22801KFXCT?
No-CY22801KFXCT integrates programmable on-die load capacitors (0–31.5 pF in 0.09375 pF steps), eliminating external capacitors. Users enter crystal CL value in CyClocksRT™, which calculates and programs the optimal CapLoad register; this improves frequency stability across voltage, temperature, and board parasitics.
CY22801KFXCT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Verified
- Type:
- Fanout Distribution, Multiplexer, Spread Spectrum Clock Generator
- PLL:
- Yes
- Input:
- Clock, Crystal
- Output:
- LVCMOS
- Number of Circuits:
- 1
- Ratio - Input:Output:
- 1:3
- Differential - Input:Output:
- No/No
- Frequency - Max:
- 200MHz
- Divider/Multiplier:
- Yes/No
- Voltage - Supply:
- 3.14V ~ 3.47V
- Operating Temperature:
- 0°C ~ 70°C
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 8-SOIC
CY22801KFXCT FAQ
1.How can I place an order for CY22801KFXCT through Aetrix?
Please submit a Request for Quotation (RFQ) for CY22801KFXCT 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 CY22801KFXCT reliable?
The price and inventory of CY22801KFXCT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY22801KFXCT is usually 5 days.
3.What payment methods are accepted for CY22801KFXCT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY22801KFXCT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY22801KFXCT?
CY22801KFXCT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY22801KFXCT 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 CY22801KFXCT?
For technical support, including CY22801KFXCT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY22801KFXCT requirements.
6.How does Aetrix verify that CY22801KFXCT is sourced from the original manufacturer or authorized distributors?
All CY22801KFXCT 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 CY22801KFXCT meets industry standards.
7.What is the process for return or replacement of CY22801KFXCT?
All CY22801KFXCT units undergo pre-shipment inspection (PSI). If there is an issue with CY22801KFXCT, 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 CY22801KFXCT part is unused and in its original packaging.
Return procedure for CY22801KFXCT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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