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Infineon Technologies CY25100SXC-062T
- Part No.:
- CY25100SXC-062T
- Manufacturer:
- Infineon Technologies
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
CY25100SXC-062T.pdf
- Description:
- IC CLOCK GENERATOR
- Quantity:
- Payment:
- Shipping:
Inventory:3,782
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Product details
Overview
CY25100SXC-062T from Cypress Semiconductor is a field- and factory-programmable spread spectrum clock generator (SSCG) IC designed to reduce electromagnetic interference in high-speed digital systems. It synthesizes and modulates clock signals using an integrated PLL, supports 3–200 MHz SSCLK output, ±0.25%–±2.5% center spread or –0.5%––5.0% down spread, and operates at 3.3 V in 8-pin TSSOP packaging. Used in PC motherboards and graphics subsystems for EMI compliance.
For engineers reviewing the CY25100SXC-062T datasheet, CY25100SXC-062T pinout, CY25100SXC-062T application, or CY25100SXC-062T equivalent, key selection criteria include programmable crystal load capacitance (12–60 pF), 31.5 kHz modulation frequency, dual outputs (REFCLK and SSCLK), and configurable PD#/OE and SSON# control logic.
Technical Context
The CY25100SXC-062T implements a proprietary PLL architecture with digital modulation control to generate frequency-modulated clock outputs. Its configuration memory array enables field reprogramming of spread percentage, crystal load capacitance, REFCLK enable state, and power/enable function selection (PD# vs OE).
It accepts either an 8–30 MHz fundamental crystal (via XIN/XOUT) or an 8–166 MHz external reference clock (via XIN only). The device delivers two independent outputs: REFCLK (non-spread, same frequency/phase as input) and SSCLK (spread-modulated, 3–200 MHz), both with CMOS-compatible drive strength and low cycle-to-cycle jitter (≤130 ps at 66 MHz).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Frequency Range | 3 MHz to 200 MHz on SSCLK pin - supports wide range of system clocks including PCIe, DDR, and GPU pixel clocks. |
| Spread Spectrum Modulation | Nominal 31.5 kHz modulation frequency with ±0.25%–±2.5% center spread or –0.5%––5.0% down spread - directly reduces peak EMI amplitude by spreading energy across bandwidth. |
| Crystal Load Capacitance | Programmable 12–60 pF in 0.5 pF steps on XIN/XOUT - eliminates need for external load capacitors and enables precise crystal matching. |
| Input Frequency Support | 8–30 MHz crystal or 8–166 MHz external clock - accommodates legacy crystals and modern high-frequency reference sources without redesign. |
| Supply Voltage | 3.13–3.45 V (typ. 3.3 V) - compatible with standard 3.3 V digital rails and tolerant of board-level voltage variation. |
| Cycle-to-Cycle Jitter | ≤130 ps at 66 MHz SSCLK with REFCLK enabled - ensures timing margin integrity for synchronous interfaces like USB 2.0 and SATA. |
| Package | 8-pin TSSOP (3.0 × 4.4 mm, 0.65 mm pitch) - surface-mount compatible with automated assembly and thermal performance θJA = 161 °C/W. |
Pinout & Package
Package: 8-pin Thin Shrink Small Outline Package (TSSOP), RoHS-compliant, moisture sensitivity level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 VDD | Power supply input | 3.3 V main supply rail; requires local 0.1 µF bypass capacitor for noise suppression. |
| 2 XOUT | Crystal oscillator output | Drives crystal's parallel resonant mode; left floating when external clock applied to XIN. |
| 3 XIN/CLKIN | Crystal input or reference clock input | Accepts 8–30 MHz crystal or 8–166 MHz single-ended clock; internal termination and biasing provided. |
| 4 PD#/OE | Configurable control input | Factory-programmed as active-low Power Down (PD#) or active-high Output Enable (OE); determines shutdown vs output gating behavior. |
| 5 VSS | Ground reference | Digital ground return path; must be connected to low-impedance PCB ground plane. |
| 6 REFCLK | Non-spread reference output | Buffered copy of input clock (same frequency/phase); programmable enable/disable to reduce loading when unused. |
| 7 SSCLK | Spread spectrum clock output | Main EMI-reduction output; modulated per programmed spread profile; drives downstream clock trees with <15 pF load. |
| 8 SSON# | Spread spectrum enable | Active-low control: LOW enables frequency modulation; HIGH disables spread, delivering nominal unmodulated clock. |
Key Features
| Feature | Design Value |
|---|---|
| Field-programmable Flash memory | Up to 100 reprogramming cycles - enables late-stage design iteration and firmware-based clock tuning without hardware change. |
| Integrated crystal load capacitors | 12–60 pF programmable in 0.5 pF steps - removes external components, improves board-level EMI consistency, and simplifies crystal selection. |
| Dual independent clock outputs | REFCLK (unmodulated) + SSCLK (modulated) - allows simultaneous feeding of noise-sensitive analog blocks and EMI-critical digital subsystems from one IC. |
| Low cycle-to-cycle jitter | ≤130 ps at 66 MHz - preserves setup/hold margins for high-speed interfaces without requiring additional jitter cleaning circuitry. |
| Configurable power/output control | Factory-selectable PD# (power-down) or OE (output-enable) on Pin 4 - supports either full chip shutdown or selective clock gating based on system power states. |
Applications
| PC Motherboard Clock Distribution | Graphics Processing Unit (GPU) Reference Clocking |
|---|---|
|
Use Scenario: Central clock source for CPU, chipset, and peripheral buses on ATX form-factor motherboards. IC Role / Device Role / Timing Role: Primary spread spectrum clock generator providing synchronized, EMI-compliant clocks to multiple domains. Use Value: Reduces radiated emissions at 100 MHz+ harmonics, enabling pass/fail compliance with FCC Part 15 Class B without added shielding or ferrites. |
Use Scenario: Reference clock for GPU memory interface (GDDR6) and display engine (DP/HDMI PHY) on discrete graphics cards. IC Role / Device Role / Timing Role: Low-jitter, modulated clock source meeting JEDEC AC timing requirements while suppressing narrowband EMI peaks. Use Value: Enables 16 Gbps/pin GDDR6 operation with ≤130 ps jitter and meets CISPR 22 Class B radiated emission limits at 1 GHz. |
| Industrial Human-Machine Interface (HMI) Controller | Medical Imaging Data Acquisition System |
|
Use Scenario: Clock generation for ARM Cortex-A9-based HMI controller running Linux with LVDS display and USB 2.0 peripherals. IC Role / Device Role / Timing Role: Single-chip clock solution delivering both processor core clock and peripheral interface clocks with shared EMI reduction. Use Value: Eliminates need for separate clock buffers and spread spectrum controllers, reducing BOM count and PCB area by 35%. |
Use Scenario: Timing reference for FPGA-based digital signal processing pipeline in ultrasound beamformer modules. IC Role / Device Role / Timing Role: Ultra-low-jitter, programmable clock source for ADC sampling and digital upconversion stages. Use Value: Maintains SNR >72 dBFS at 40 MSPS sampling with <130 ps jitter, critical for diagnostic image resolution fidelity. |
Equivalent & Alternatives
Cypress CY25100SXC-062T has two verified drop-in alternatives with documented functional overlap and known trade-offs.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| IDT 8T49N241 | Higher integration: includes I²C interface, multi-output (4x), and fractional-N PLL; requires external configuration EEPROM. | Supports dynamic spread adjustment and multi-frequency profiles; overqualified for fixed-configuration SSCG use cases. | Select only if future firmware-updatable spread control or multiple output frequencies are required; adds complexity and cost. |
| ON Semiconductor NB3N502 | Fixed factory-programmed spread (±0.5% center); no field reprogrammability; lower max output frequency (170 MHz). | Limited to static EMI reduction; unsuitable for prototyping or post-silicon tuning; lacks programmable load capacitance. | Choose for high-volume, cost-sensitive applications where spread profile and crystal match are finalized pre-production. |
Compared with IDT 8T49N241 and ON Semi NB3N502, CY25100SXC-062T uniquely balances field reprogrammability, integrated crystal tuning, and 200 MHz capability - making it optimal for development-phase EMI mitigation where clock parameters remain fluid.
Availability
CY25100SXC-062T is available at Aetrix Electronics and suitable for PC motherboard clock distribution, GPU reference clocking, and industrial HMI controller designs requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production lots.
Supply support for CY25100SXC-062T 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 electronics.
CY25100 belongs to Cypress's Spread Spectrum Clock Generator product line, engineered specifically for EMI reduction in high-speed digital systems without compromising timing integrity or requiring external passive components.
FAQ
What is the default spread spectrum setting for CY25100SXC-062T?
The CY25100SXC-062T ships with factory-programmed settings that include center spread at ±0.5%, 31.5 kHz modulation frequency, and REFCLK enabled. These values are stored in nonvolatile Flash memory and can be modified using the CY3672 programmer with CY3690 socket adapter for TSSOP packages.
Can CY25100SXC-062T operate with a 100 MHz external reference clock?
Yes - the device accepts external reference clocks from 8 MHz to 166 MHz on the XIN pin. At 100 MHz input, it can synthesize SSCLK outputs from 3 MHz to 200 MHz via its internal PLL, with programmable division/multiplication ratios and spread modulation applied to the final output.
How does the programmable crystal load capacitance affect oscillator stability?
The 12–60 pF programmable load capacitance (CXIN/CXOUT) matches the crystal's specified load value (CL), minimizing frequency deviation and start-up time. For example, a 16 pF crystal with 2 pF PCB parasitics requires CXIN = CXOUT = 30 pF - ensuring ±10 ppm accuracy and reliable oscillation across temperature.
Is CY25100SXC-062T pin-compatible with other CY25100 variants?
Yes - all CY25100 variants (including SOIC and TSSOP packages) share identical 8-pin pinouts and electrical characteristics. The "SXC" suffix denotes TSSOP packaging and commercial temperature grade (0°C to +70°C), while functionality remains identical to SXI (industrial grade) and ZXCF (TSSOP field-programmable) versions.
CY25100SXC-062T 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
- Type:
- -
- PLL:
- -
- Input:
- -
- Output:
- -
- Number of Circuits:
- -
- Ratio - Input:Output:
- -
- Differential - Input:Output:
- -
- Frequency - Max:
- -
- Divider/Multiplier:
- -
- Voltage - Supply:
- -
- Operating Temperature:
- -
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 8-SOIC
CY25100SXC-062T FAQ
1.How can I place an order for CY25100SXC-062T through Aetrix?
Please submit a Request for Quotation (RFQ) for CY25100SXC-062T 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 CY25100SXC-062T reliable?
The price and inventory of CY25100SXC-062T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY25100SXC-062T is usually 5 days.
3.What payment methods are accepted for CY25100SXC-062T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY25100SXC-062T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY25100SXC-062T?
CY25100SXC-062T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY25100SXC-062T 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 CY25100SXC-062T?
For technical support, including CY25100SXC-062T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY25100SXC-062T requirements.
6.How does Aetrix verify that CY25100SXC-062T is sourced from the original manufacturer or authorized distributors?
All CY25100SXC-062T 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 CY25100SXC-062T meets industry standards.
7.What is the process for return or replacement of CY25100SXC-062T?
All CY25100SXC-062T units undergo pre-shipment inspection (PSI). If there is an issue with CY25100SXC-062T, 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 CY25100SXC-062T part is unused and in its original packaging.
Return procedure for CY25100SXC-062T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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