LMK03002 Datasheet | National Semiconductor

LMK03002/LMK03002C Precision Clock Conditioner with Integrated VCO .. August 2007 LMK03002/LMK03002C Precision Clock Conditioner with Integrated VCO General Description The LMK03002/LMK03002C precision clock conditioners bine 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 ponents. The clock conditioners e in a 48-pin LLP package and are footprint patible 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 d Bc/Hz - LMK03002C: 200 fs RMS jitter - Clock generator performance (10 Hz - 20 MHz) - Jitter cleaner performance grade (12 k Hz to 20 MHz) - - - - - - - - - LMK03002: 800 fs RMS jitter - LMK03002C: 400 fs RMS jitter VCO frequency: 1566 to 1724 MHz Clock output frequency range of 1 to 862 MHz 4 LVPECL clock outputs Partially integrated loop filter Dedicated divider and delay blocks on each clock output Pin patible family of clocking devices 3.15 to 3.45 V operation Package: 48 pin LLP (7.0 x 7.0 x 0.8 mm) Target Applications - - - - - - Data Converter Clocking Networking, SONET/SDH, DSLAM Wireless Infrastructure Medical Test and Measurement Military / Aerospace TRI-STATE® is a registered trademark of...