DESCRIPTION

· The PI6LC48S25B is an LC VCO based low phase noise design for 10GbE applications.

· It uses a 25MHz crystal input to generate 156.25MHz and other Ethernet clock frequencies.

· Provides a buffered crystal oscillator output as a low noise reference for other circuitry.

· Programmable dividers allow output frequencies of 312.5, 156.25, 125, 100, 50, and 25MHz.

· Offers pin selection and I2C interface for system flexibility.

FEATURES

· 3.3V & 2.5V supply voltage.

· Crystal/CMOS input: 25 MHz.

· Differential input: 25MHz, 125MHz, and 156.25 MHz.

· Output frequencies: 312.5, 156.25, 125, 100, 50, 25MHz.

· 4 Output banks with selectable output signaling: LVPECL or LVDS.

· Low 0.3ps typical integrated phase noise design: 156.25MHz (12kHz to 20MHz).

· PLL Bypass mode for test.

· Power supply noise rejection: -52 dBc typical @ VDD.

· Packaging (Pb-free & Green): 56-lead 8×8mm TQFN.

· Industrial temperature support: -40C to 85C.

APPLICATIONS

· 10GbE Ethernet applications.

· Ethernet clock generation for various frequencies.

· Low noise reference for other circuitry.

· Systems requiring flexible clock generation and selection.