Hot-selling and scarce LMK04228NKDR Clock Jitter Cleaner With Dual-Loop PLLs 64-WFQFN spot stock

Product Descriptions

The  LMK04228 device  is  the  industry's  highperformance  clock   conditioner    with  JEDECJESD204B support .

The 14 clock outputs from PLL2 can be configured todrive seven JESD204B converters or  other  logicdevices using device and SYSREF clocks . SYSREFcan be provided using both DC and AC coupling . Notlimited to JESD204B applications,  each of  the 14outputs can be individually configured as highperformance outputs for traditional clocking systems .

The high performance combined with features like theability to trade off  between power or performance,dual   VCOs,   holdover,   and per-output   adjustableanalog and digital  delay make the LMK04228 idealfor providing flexible high performance clocking trees .

Product Features

•   JEDEC JESD204B Support

•   Ultra-Low RMS Jitter

– 156 fs RMS Jitter (12 kHz to 20 MHz)

– 245 fs RMS Jitter (100 Hz to 20 MHz)

– –162.5 dBc/Hz Noise Floor at 245.76 MHz

•   Up to 14 Differential Device Clocks from PLL2

– Up to 7 SYSREF Clocks

– Maximum Clock Output Frequency: 1.25 GHz

– LVPECL, LVDS Programmable Outputs From PLL2

•   Buffered VCXO or Crystal Output From PLL1

– LVPECL, LVDS, 2xLVCMOS Programmable

•   Dual Loop PLLatinum ™ PLL Architecture

•   PLL1

– Up to 3 Redundant Input Clocks

– Automatic and Manual Switch-Over Modes

– Hitless Switching and LOS

– Integrated Low-Noise Crystal Oscillator Circuit

– Holdover Mode When Input Clocks are Lost

•   PLL2

– Normalized [1 Hz] PLL Noise Floor of

–224 dBc/Hz

– Phase Detector Rate up to 155 MHz

– OSCin Frequency-Doubler

– Two Integrated Low-Noise VCOs

•   50% Duty Cycle Output Divides, 1 to 32 (Even and Odd)

•   Precision Digital Delay

•   25-ps Step Analog Delay

•   Multi-Mode: Dual PLL or Single PLL

•   Industrial Temperature Range: –40°C to 85°C

•   3. 15-V to 3.45-V Operation

•   Package: 64-Pin WQFN (9 .0 × 9.0 × 0.8 mm)

Product Applications

•   Wireless Infrastructure

•   Data Converter Clocking

•   Networking, SONET/SDH, DSLAM

•   Medical / Video / Military / Aerospace

•   Test and Measurement

Product Specification

Product Photos

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