GENERAL DESCRIPTION

The 843023 is a Gigabit Ethernet Clock Generator and a member of

the HiPerClocksTM family of high performance devices from IDT. The

843023 uses a 25MHz crystal to synthesize 250MHz. The 843023

has excellent phase jitter performance, over the 1.875MHz – 20MHz

integration range. The 843023 is packaged in a small 8-pin TSSOP,

making it ideal for use in systems with limited board space.

FEATURES

• One differential 3.3V LVPECL output

• Crystal oscillator interface designed for 25MHz,

18pF parallel resonant crystal

• Output frequencies: 245MHz – 320MHz

• VCO range: 490MHz - 640MHz

• RMS phase jitter @ 250MHz, using a 25MHz crystal

(1.875MHz - 20MHz): 0.39ps (typical)

Offset Noise Power

100Hz ................-86.3 dBc/Hz

1kHz ..............-114.6 dBc/Hz

10kHz ..............-125.6 dBc/Hz

100kHz .................-126 dBc/Hz

• 3.3V operating supply

• 0°C to 70°C ambient operating temperature

• Available in lead-free (RoHS 6) package

843023属于集成电路（IC） > 时钟发生器，PLL，频率合成器。瑞萨科技有限公司制造生产的843023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。