810N252CKI-02LF集成电路（IC）的时钟发生器PLL频率合成器规格书PDF中文资料

特性 Features

• Fourth generation FemtoClock® NG technology

• Two single-ended LVCMOS/LVTTL outputs

• Each output supports independent frequency selection at 25MHz,

125MHz, 156.25MHz and 312.5MHz

• Two differential inputs support the following input types: LVPECL,

LVDS, LVHSTL, HCSL

• Accepts input frequencies from 8kHz to 155.52MHz including

8kHz, 1.544MHz, 2.048MHz, 19.44MHz, 25MHz, 77.76MHz,

125MHz and 155.52MHz

• Crystal interface designed for a 27MHz crystal

• Attenuates the phase jitter of the input clock by using a low-cost

fundamental mode crystal

• Customized settings for jitter attenuation and reference tracking

using an external loop filter connection

• FemtoClock NG frequency multiplier provides low jitter, high

frequency output

• Absolute pull range: ±50ppm

• Power supply noise ratio (PSNR): -85dB

• FemtoClock NG VCO frequency: 625MHz

• RMS phase jitter @ 125MHz, using a 27MHz crystal

(12kHz – 20MHz): 0.67ps (typical)

• 3.3V supply voltage

• -40°C to 85°C ambient operating temperature

• Available in lead-free (RoHS 6) package