840NT4NLGI8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

• Ten LVCMOS clock outputs: four system clocks, four DDR clocks,

one RTC output, and one 25MHz reference clock

• Selectable input reference: crystal oscillator interface or

differential LVPECL input

• Output Frequency Range: 25MHz - 200MHz

• Serial Interface: I2C programmable

• Frequency Margining in <0.312MHz steps

• Spread spectrum for EMI reduction

• VCO range: 2GHz – 2.4GHz

• Voltage supply modes:

Core (VDD, VDDXTAL, VDDA) all core voltages must be identical

Output (VDDO_A,VDDO_B, VDDO_C, VDDO_REF0, VDDO_REF1)

Core / Output

3.3V / 3.3V

3.3V / 2.5V

3.3V / 1.8V

2.5V / 2.5V

2.5V / 1.8V

• Output voltage levels are independently selectable

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

• Lead-free (RoHS 6) packaging