| Function | Spread-spectrum clock generator |
| Number of outputs | 1 |
| Output frequency (Max) (MHz) | 108 |
| Core supply voltage (V) | 3.3 |
| Output supply voltage (V) | 3.3 |
| Input type | LVCMOS |
| Output type | LVCMOS |
| Operating temperature range (C) | -40 to 85 |
| Features | Spread-spectrum clocking (SSC), Pin programmable |
| Rating | Catalog |
- Part of a Family of Easy to use Clock Generator Devices
With Optional SSC - Clock Multiplier With Selectable Output Frequency and
Selectable SSC - SSC Controllable via 2 External Pins
- ±0%, ±0.5%, ±1%, ±2% Center Spread
- Frequency Multiplication Selectable Between x1 or x4
With One External Control Pin - Output Disable via Control Pin
- Single 3.3V Device Power Supply
- Wide Temperature Range –40°C to 85°C
- Low Space Consumption by 8 Pin TSSOP Package
- APPLICATIONS
- Consumer and Industrial Applications requiring
EMI reduction through Spread Spectrum Clocking
and/or Clock Multiplication
- Consumer and Industrial Applications requiring
The CDCS503 is a spread spectrum capable, LVCMOS Input Clock Buffer with selectable frequency multiplication.
It shares major functionality with the CDCS502 but utilizes a LVCMOS input stage instead of the crystal input stage of the CDCS502. Also an Output Enable pin has been added to the CDCS503.
The device accepts a 3.3V LVCMOS signal at the input.
The input signal is processed by a PLL, whose output frequency is either equal to the input frequency or multiplied by the factor of 4.
The PLL is also able to spread the clock signal by ±0%, ±0.5%, ±1% or ±2% centered around the output clock frequency with a triangular modulation.
By this, the device can generate output frequencies between 8MHz and 108MHz with or without SSC.
A separate control pin can be used to enable or disable the output. The CDCS503 operates in 3.3V environment.
It is characterized for operation from ?40°C to 85°C, and available in an 8-pin TSSOP package.