SKY72310-11数据手册集成电路（IC）的时钟发生器PLL频率合成器规格书PDF

描述 Description

Skyworks SKY72310-11 fractional-N frequency synthesizerprovides ultra-fine frequency resolution, fast switching speed, andlow phase-noise performance. This synthesizer is a key buildingblock for high-performance radio system designs that require lowpower and fine step size.

The ultra-fine step size of less than 100 Hz allows this synthesizerto be used in very narrowband wireless applications. With propertemperature sensing or through control channels, thesynthesizer’s fine step size can compensate for crystal oscillatoror intermediate frequency (IF) filter drift. As a result, crystaloscillators or crystals can replace temperature-compensated orovenized crystal oscillators, reducing parts count and associatedcomponent cost. The device’s fine step size can also be used forDoppler shift corrections.

Reference crystals or oscillators up to 50 MHz can be used withthe SKY72310-11. The crystal frequency is divided down byindependent programmable dividers (1 to 32) for the synthesizer.The phase detector can operate at a maximum speed of 50 MHz,which allows better phase noise due to the lower division value.With a high reference frequency, the loop bandwidths can also beincreased. Larger loop bandwidths improve the settling times andreduce in-band phase noise. Therefore, typical switching times ofless than 100 μs can be achieved. The lower in-band phasenoise also permits the use of lower cost Voltage ControlledOscillators (VCOs) in customer applications.

特性 Features

• Spur-free, fractional-N operation
• Operating frequency: 50 MHz to 2.1 GHz
• Normalized phase noise: -218 dBc/Hz
• Low power consumption:11 to 14 mW typical @ 3 V
• Ultra-fine step size, 100 Hz or less
• Software programmable power-down modes
• High-speed serial interface up to 100 Mbps
• Programmable division ratios on reference frequency
• Phase detector with programmable gain to provide a programmable loop bandwidth
• On-chip crystal oscillator
• Supply range: 2.7 to 3.3 V operation
• High ESD: 1 kV HBM
• MCM (24-pin, 4 x 4 mm) (MSL3, 260 °C per JEDEC J-STD-020) package
• Pin-compatible replacement to the SKY72310-362LF

简介

SKY72310-11属于集成电路（IC）的时钟发生器PLL频率合成器。由制造生产的SKY72310-11时钟发生器，PLL，频率合成器时钟发生器、PLL 和频率合成器集成电路 (IC) 可为逻辑器件提供参考信号的稳定定时脉冲，这些器件包括计算机、微控制器、数据通信系统和图形/视频发生器。这些集成电路可能包括缓冲器、驱动器、分频器、倍频器、多路复用器、合成器、扇出分配器和预分频器。