1 Features

1? 5 LVCMOS Outputs, DC to 200 MHz

? Universal Input

– LVPECL

– LVDS

– HCSL

– SSTL

– LVCMOS and LVTTL

? Crystal Oscillator Interface

– Crystal Input Frequency: 10 to 40 MHz

? Output Skew: 6 ps

? Additive Phase Jitter

– 30 fs at 156.25 MHz (12 kHz to 20 MHz)

? Low Propagation Delay

? Operates With 3.3 or 2.5-V Core Supply Voltage

? Adjustable Output Power Supply

– 1.5 V, 1.8 V, 2.5 V, and 3.3 V for Each Bank

? 24-Pin WQFN Package (4.0 mm × 4.0 mm ×

0.8 mm)

2 Applications

? LO Reference Distribution for RRU Applications

? SONET, Ethernet, Fibre Channel Line Cards

? Optical Transport Networks

? GPON OLT/ONU

? Server and Storage Area Networking

? Medical Imaging

? Portable Test and Measurement

? High-End A/V

3 Description

The LMK00105 is a high-performance, low-noise

LVCMOS fanout buffer which can distribute five ultralow

jitter clocks from a differential, single-ended, or

crystal input. The LMK00105 supports synchronous

output enable for glitch-free operation. The ultra lowskew,

low-jitter, and high PSRR make this buffer

ideally suited for various networking, telecom, server

and storage area networking, RRU LO reference

distribution, medical and test equipment applications.

The core voltage can be set to 2.5 or 3.3 V, while the

output voltage can be set to 1.5, 1.8, 2.5 or 3.3 V.

The LMK00105 can be easily configured through pin

programming.