TI LMK04816BISQE/NOPB

ДаLVCMOS, LVDS, LVPECLLVCMOS, LVDS, LVPECL

Overview

The LMK04816BISQE/NOPB device is the industry’s highest performance clock conditioner with superior clock jitter cleaning, generation, and distribution with advanced features to meet next generation system requirements. The dual-loop PLLATINUM architecture enables 111-fs RMS jitter (12 kHz to 20 MHz) using a low-noise VCXO module or sub-200-fs RMS jitter (12 kHz to 20 MHz) using a low-cost external crystal and varactor diode.

The dual-loop architecture consists of two high-performance phase-locked loops (PLL), a low-noise crystal oscillator circuit, and a high-performance voltage controlled oscillator (VCO). The first PLL (PLL1) provides a low-noise jitter cleaner function while the second PLL (PLL2) performs the clock generation. PLL1 can be configured to either work with an external VCXO module or the integrated crystal oscillator with an external tunable crystal and varactor diode. When used with a very narrow loop bandwidth, PLL1 uses the superior close-in phase noise (offsets below 50 kHz) of the VCXO module or the tunable crystal to clean the input clock. The output of PLL1 is used as the clean input reference to PLL2 where it locks the integrated VCO. The loop bandwidth of PLL2 can be optimized to clean the far-out phase noise (offsets above 50 kHz) where the integrated VCO outperforms the VCXO module or tunable crystal used in PLL1.

Features

Applications

• Wireless infrastructure
• Instrument
• Automatic test equipment
• Wide area power system
• Digital circuits
• Wireless base station for LTE, LTE-advanced
• Picocells, femtocells and small cells
• Sampling clocks for ADC and DAC
• 1 Gigabit Ethernet
• 10 Gigabit Ethernet