1 Features

• Clock buffer for 300-MHz to 16-GHz frequency

• Divider output frequency supported up to 6.4-GHz

• Ultra-Low Noise

– Noise floor of –161 dBc/Hz at 6-GHz output

– 36-fs additive jitter (100-Hz to fCLK) at 6-GHz

output

– 5-fs additive jitter (100-Hz - 100-MHz)

• 4 high-frequency clocks output

– with shared divider by 1 (Bypass), 2, 3, 4, 5, 6,

7, and 8

• 1 ps typical output to output skew

• Support pin mode options for outputs enable and

divider /2, /3 and /4 values set

• AUXCLK output

– On separate divide bank

– 1, 2, 4 pre-divider

– 1 (bypass), 2, …, 1023 post divider

• 8 programmable output power levels

• SYNC feature to all divides

• 2.5-V operating voltage

• –40ºC to +85ºC operating temperature

2 Applications

• Test & Measurement:

– Oscilloscope

– Wireless equipment testers

– Wideband digitizers

• Aerospace & Defense:

– Radar

– Electronic warfare

– Seeker Front end

– Munitions

– Phase array antenna / Beam forming

• General Purpose:

– Data converter clocking

– Clock buffer distribution / division

3 Description

The LMX1214 features high output frequency, ultralow

noise floor, and very low skew clocks distribution.

The device has four high-frequency output clocks

and a lower frequency auxiliary clock output. The

device supports both buffer and divide mode for the

high-frequency clocks. This device can distribute the

mutlichannel, low skew, ultra-low noise local oscillator

signals to multiple mixers.