LMK03002

LMK03002/LMK03002C Precision Clock Conditioner with Integrated VCO www.DataSheet4U.com August 2007 LMK03002/LMK03002C Precision Clock Conditioner with Integrated VCO General Description The LMK03002/LMK03002C precision clock conditioners combine the functions of jitter cleaning/reconditioning, multiplication, and distribution of a reference clock. The devices integrate a Voltage Controlled Oscillator (VCO), a high performance Integer-N Phase Locked Loop (PLL), a partially integrated loop filter, and four LVPECL clock output distribution blocks. The VCO output is optionally accessible on the Fout port. Internally, the VCO output goes through a VCO Divider to feed the various clock distribution blocks. Each clock distribution block includes a programmable divider, a phase synchronization circuit, a programmable delay, a clock output mux, and an LVPECL output buffer. This allows multiple integer-related and phase-adjusted copies of the reference to be distributed to four system components. The clock conditioners come in a 48-pin LLP package and are footprint compatible with other clocking devices in the same family. Features ■ Integrated VCO with very low phase noise floor ■ Integrated Integer-N PLL with outstanding normalized phase noise contribution of -224 dBc/Hz — LMK03002C: 200 fs RMS jitter ■ Clock generator performance (10 Hz - 20 MHz) ■ Jitter cleaner performance grade (12 kHz to 20 MHz) ■ ■ ■ ■ ■ ■ ■ ■ — LMK03002: 800 fs RMS jitter — LMK03002C: 400 fs RMS jitter VC...