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

Infineon Technologies CY22800FXIT

Name: CY22800FXIT
Brand: Infineon Technologies
SKU: CY22800FXIT
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: CY22800FXIT

Manufacturer:: Infineon Technologies

Category:: Application Specific Clock/Timing

Package:: 8-SOIC (0.154", 3.90mm Width)

Datasheet:: CY22800FXIT.pdf

Description:: IC PROG CLOCK GEN 8-SOIC

Quantity:: RFQ Add To RFQ list

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Inventory:3,996

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Product details

Overview

CY22800FXIT from Cypress Semiconductor is a field-reprogrammable universal programmable clock generator (UPCG) with integrated PLL, spread spectrum clocking (SSCG), and VCXO capability. It supports 3.3 V operation, delivers up to three low-jitter clock outputs (CLKA/CLKB/CLKC), accepts crystal or external clock inputs (8–30 MHz XTAL or 0.5–100 MHz CLKIN), and targets EMI reduction in consumer and communications systems.

For engineers reviewing the CY22800FXIT datasheet, CY22800FXIT pinout, CY22800FXIT application, or CY22800FXIT equivalent, key selection criteria include its reprogrammability (up to 100 times), configurable spread-spectrum percentages (±0.25% to ±2.0%), VCXO analog tuning range (±200 ppm), and support for fixed- and variable-ratio frequency multiplication across commercial (1–200 MHz) and industrial (1–166 MHz) output ranges.

Technical Context

The CY22800FXIT implements a proprietary integer-N PLL architecture with selectable feedback dividers and output post-dividers, enabling precise frequency synthesis from multiple input sources. Its SSCG block modulates output frequencies using preprogrammed profiles with eight discrete spread percentages and on/off control, directly reducing peak EMI emissions without altering system timing margins.

VCXO functionality is implemented via an analog voltage-controlled tuning input (FS0/VCXO pin), allowing real-time frequency pulling of the reference crystal over ±200 ppm with linear response. Pin multiplexing (e.g., CLKA/FS0, CLKB/FS1, CLKC/FS2/VSS) enables configuration flexibility but requires mode-specific pin assignment per one-page data sheet.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage	3.3 V ±5% - ensures compatibility with modern low-voltage digital logic domains and reduces power supply noise coupling.
Input Frequency Range	Crystal: 8–30 MHz; CLKIN: 0.5–100 MHz - supports common reference crystals and high-speed system clocks including PCI, USB, and video pixel rates.
Output Frequency Range	Commercial: 1–200 MHz; Industrial: 1–166 MHz - covers CPU, memory, video, and audio clocking requirements across temperature grades.
Spread Spectrum Range	±0.25% to ±2.0% - provides scalable EMI suppression for compliance with FCC Class B and CISPR 22 standards.
VCXO Tuning Range	±200 ppm at 3.3 V supply - enables synchronization to drifting external references such as network-derived timing signals.
Reprogrammability	Up to 100 write cycles - allows iterative prototyping and field firmware updates without component replacement.
Package Type	8-pin SOIC (150 mil) - enables standard surface-mount assembly and PCB layout compatibility with legacy clock IC footprints.

Pinout & Package

8-pin SOIC (150 mil) package with exposed pad not present; RoHS-compliant lead finish; thermal resistance θ_JA = 140 °C/W (JEDEC Std. 2S2P).

Pin/Terminal	Circuit Role	Design Meaning
XIN	Reference input	Accepts either parallel-resonant crystal (8–30 MHz) or single-ended CMOS clock (0.5–100 MHz); internal oscillator circuitry enabled only when crystal used.
VDD	Power supply	3.3 V core and I/O supply; decoupling capacitor required within 10 mm of pin for stable PLL operation.
FS0/VCXO	Frequency select 0 / VCXO control	Analog voltage input (0–3.3 V) for ±200 ppm crystal frequency pulling; also serves as digital FS0 in non-VCXO configurations.
VSS	Ground	Digital ground reference; shared with CLKC/FS2 function in some configurations - must be connected to system GND regardless of mode.
CLKB/FS1	Clock output B / frequency select 1	Primary output with optional spread spectrum modulation; dual-role pin enables configuration switching without external logic.
CLKA/FS0	Clock output A / frequency select 0	Main output supporting full frequency range (1–200 MHz); FS0 function selects among predefined configurations stored in internal memory array.
CLKC/FS2/VSS	Clock output C / frequency select 2 / ground	Third output with fanout or REFOUT capability; FS2 enables multi-configuration selection; VSS role confirms ground continuity requirement in all modes.
XOUT	Reference output	Buffered crystal or CLKIN signal; left unconnected when external clock is used as reference to avoid loading effects.

Key Features

Feature	Design Value
Field-programmable PLL	Configurable via CY36800 dongle and one-page data sheets - eliminates need for custom mask ROM or factory programming.
Eight SSCG profiles	Predefined ±0.25%, ±0.5%, ..., ±2.0% spread options - simplifies EMI testing by avoiding iterative hardware changes.
VCXO analog tuning	Linear 0–3.3 V input maps to ±200 ppm output shift - enables closed-loop tracking of telecom-grade reference clocks.
Multi-output fanout	Three independent CMOS outputs (CLKA/B/C) with configurable drive strength - replaces discrete buffer solutions in STB and DTV designs.
Reprogrammable memory	Internal nonvolatile memory supports ≥100 erase/write cycles - supports design iteration and late-stage BOM optimization.

Applications

Set-Top Box (STB)

Digital Television (DTV)

Use Scenario: Generating synchronized MPEG-2 system clocks (27 MHz, 54 MHz) and audio sample rate clocks (e.g., 256fs × 44.1 kHz) from a single 13.5 MHz or 27 MHz crystal.

IC Role / Device Role / Timing Role: Universal clock generator providing three precisely ratioed outputs with VCXO tracking to maintain audio-video sync under varying transport stream jitter.

Use Value: Eliminates need for multiple discrete oscillators and reduces board space by 60% versus discrete crystal + buffer solutions.

Use Scenario: Delivering pixel clocks (74.25 MHz, 148.5 MHz) and reference clocks (27 MHz) for HDMI and display interface subsystems in HDTV mainboards.

IC Role / Device Role / Timing Role: Programmable fanout buffer with spread spectrum enabled on pixel clock outputs to meet FCC radiated emissions limits without shielding cans.

Use Value: Achieves Class B EMI compliance at system level while maintaining <1 ps RMS jitter for clean HDMI signal integrity.

PCI/ASIC Clocking

Audio/Video Equipment

Use Scenario: Providing 33.33 MHz, 66.66 MHz, and 100 MHz clocks for PCI Express root complexes and companion ASICs in embedded computing platforms.

IC Role / Device Role / Timing Role: Spread spectrum clock generator with –0.5% to –2.0% down-spread on primary outputs to suppress harmonics at 100/200/300 MHz.

Use Value: Reduces peak EMI by >10 dB at third harmonic, enabling pass-fail margin improvement without redesigning PCB stack-up.

Use Scenario: Generating master audio clocks (24.576 MHz, 49.152 MHz) and synchronous serial interface clocks (I²S, SPDIF) from a 27 MHz reference in AV receivers.

IC Role / Device Role / Timing Role: Low-jitter clock synthesizer with VCXO input tied to network time protocol (NTP)-derived voltage reference for drift compensation.

Use Value: Maintains <50 ppb long-term frequency accuracy across temperature, preventing audible pitch drift in high-resolution audio playback.

Equivalent & Alternatives

The following parts are listed as comparable options for similar programmable clock generator applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
IDT 5V41065APFG	Fixed 6-output architecture; no VCXO; supports only LVCMOS/LVTTL; no spread spectrum.	Lacks analog tuning and EMI reduction features; suited for static clock trees where frequency stability is absolute priority.	Select when deterministic jitter floor (<0.3 ps RMS) outweighs flexibility needs and VCXO is unnecessary.
ON Semi NB3N3020BDR2G	2-output device; integrated crystal driver; no reprogrammability; limited spread spectrum (±0.25% only).	Targeted at cost-sensitive consumer audio/video; lacks multi-configuration storage and wide output range.	Choose for simple dual-clock applications where field update capability and wide frequency coverage are not required.

Compared with IDT 5V41065APFG and ON Semi NB3N3020BDR2G, the CY22800FXIT uniquely combines reprogrammability, VCXO tuning, and eight SSCG profiles in an 8-pin SOIC - making it optimal for EMI-constrained, multi-standard consumer electronics requiring post-silicon clock optimization.

Availability

CY22800FXIT is available at Aetrix Electronics and suitable for set-top box (STB), digital television (DTV), PCI-based embedded computing, and audio/video receiver designs requiring stable component supply, long-lifecycle availability, and field-programmable clock flexibility.

Supply support for CY22800FXIT 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 fabless semiconductor company specializing in programmable system-on-chip (PSoC), memory, and timing solutions for industrial, automotive, and consumer markets.

The CY22800 product line was designed to replace fixed-function clock generators in consumer electronics with a single, field-configurable device supporting spread spectrum, VCXO, and multi-ratio synthesis - targeting rapid prototyping and multi-platform reuse.

FAQ

What programming hardware is required to configure the CY22800FXIT?

The CY22800FXIT is programmed using the Cypress CY36800 programmer dongle and associated configuration software. Predefined one-page data sheets (e.g., CY22800-023A for MPEG-2) define all register settings; no custom firmware development is needed. Programming occurs via the XIN/XOUT pins in ISP mode and supports up to 100 write cycles.

Does the CY22800FXIT support differential output signaling?

No, the CY22800FXIT provides only single-ended CMOS outputs (CLKA, CLKB, CLKC). All outputs are rail-to-rail 3.3 V CMOS compatible with standard logic families. Differential signaling (LVDS, HCSL, or LVPECL) is not supported; external translators would be required for such interfaces.

How does the VCXO function interact with spread spectrum operation?

VCXO and spread spectrum are mutually exclusive modes: VCXO requires analog voltage control on FS0/VCXO pin and disables SSCG, while spread spectrum configurations use FS0/FS1/FS2 as digital select lines and disable VCXO tuning. The device's configuration memory determines which mode is active - they cannot operate simultaneously.

What is the maximum allowable load capacitance on the XIN pin when using a crystal?

When operating in crystal mode, the CY22800FXIT specifies a maximum load capacitance of 12 pF for the XIN pin. This value is fixed by internal oscillator circuitry; external load capacitors must be selected to match the crystal's specified load capacitance (e.g., 12 pF or 18 pF) - mismatch causes frequency inaccuracy or startup failure.

CY22800FXIT Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: -

Package/Case:: 8-SOIC (0.154", 3.90mm Width)

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Programmable:: Not Verified

PLL:: Yes

Main Purpose:: MPEG-2, DTV, STB

Input:: Crystal or Other

Output:: LVCMOS

Number of Circuits:: 1

Ratio - Input:Output:: 1:3

Differential - Input:Output:: No/No

Frequency - Max:: 200MHz

Voltage - Supply:: 3.14V ~ 3.47V

Operating Temperature:: -40°C ~ 85°C

Mounting Type:: Surface Mount

Grade:: -

Qualification:: -

Supplier Device Package:: 8-SOIC

CY22800FXIT FAQ

1.How can I place an order for CY22800FXIT through Aetrix?

Please submit a Request for Quotation (RFQ) for CY22800FXIT 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 CY22800FXIT reliable?

The price and inventory of CY22800FXIT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY22800FXIT is usually 5 days.

3.What payment methods are accepted for CY22800FXIT?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY22800FXIT transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for CY22800FXIT?

CY22800FXIT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your CY22800FXIT 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 CY22800FXIT?

For technical support, including CY22800FXIT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY22800FXIT requirements.

6.How does Aetrix verify that CY22800FXIT is sourced from the original manufacturer or authorized distributors?

All CY22800FXIT 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 CY22800FXIT meets industry standards.

7.What is the process for return or replacement of CY22800FXIT?

All CY22800FXIT units undergo pre-shipment inspection (PSI). If there is an issue with CY22800FXIT, 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 CY22800FXIT part is unused and in its original packaging.

Return procedure for CY22800FXIT:

1.Submit a request within 90 days.

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

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