W155GT - Brand New Cypress Semiconductor IC Chips
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Description
The W155GT is an electronic component model in the IC Chips product category. It incorporates the latest advances in PLL-based spread spectrum frequency synthesizer technology to reduce peak electromagnetic interference (EMI) in a system. The W155GT uses frequency modulation of the SYSCLK output with a low-frequency carrier to achieve this reduction, eliminating the need for costly shielding or redesign. This technique not only reduces EMI in clock lines but also in all synchronized signals, making it particularly effective in systems with multiple address and data lines.
Specifications and features
- Generates a spread spectrum timing signal (SYSCLK) and a non-spread signal (USBCLK)
- Requires a 14.318-MHz crystal for operation
- Supports MIPS microprocessor clock frequencies
- Reduces peak EMI by as much as 12 dB
- Integrated loop filter components
- Cycle-to-cycle jitter = 250 ps (max)
- Operates with a 3.3 or 5.0V power supply
- Spread output is selectable from 10 to 133 MHz
- TEST mode supports modulation off (High-Z) and special test input reference frequency
- Guaranteed 45/55 duty cycle
- Packaged in a 16-pin, 300-mil-wide SOIC (Small Outline Integrated Circuit)
Application Scenarios
The W155GT can be used in various electronic systems where reducing EMI is important. It is particularly suited for systems with multiple clock lines and synchronized signals, such as microprocessors, communication devices, and data processing systems. By using the W155GT, designers can achieve EMI compliance without the need for extensive shielding or costly redesign.
Comparison
Advantages- Reduces peak EMI in clock lines and synchronized signals
- Eliminates the need for costly shielding or system redesign
- Supports a wide range of operating voltages (3.3V or 5.0V)
- Selectable spread output frequency from 10 to 133 MHz
- Integrated loop filter components simplify system design
Disadvantages- Requires a 14.318-MHz crystal for operation
- Cycle-to-cycle jitter of 250 ps (max)
- Package size may limit compatibility with certain systems
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Similar parts: 430483 , Click to view
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Datasheet
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Shopping guide
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Popular parts of the same kind
- Datasheet: Download W155GT
- Chipdatas Part: CD91-W155GT
- Warehouse: China, Hong Kong
- Dispatch: Within 24 hours
- Free Shipping: Yes
- Prority Shipping: Yes, 3-5 days
- Last Updated: 2024/06/03 14:21 +0800
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- Full Refund if you don't receive your order
- Full or Partial Refund , If the item is not as described
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