ZL30261集成電路（IC）的時鐘發(fā)生器PLL頻率合成器規(guī)格書PDF中文資料

Features

? 4 Flexible Input Clocks

? One crystal/CMOS input

? Two differential/CMOS inputs

? One single-ended/CMOS input

? Any input frequency from 9.72MHz to 1.25GHz

(300MHz max for CMOS)

? Activity monitors, automatic or manual switching

? Glitchless clock switching by pin or register

? 6 or 10 Any-Frequency, Any-Format Outputs

? Any output frequency from 1Hz to 1045MHz

? High-resolution frac-N APLL with 0ppm error

? The APLL has a fractional divider and an

integer divider to make two independent

frequency families

? Output jitter from the integer divider as low as

0.17ps RMS (12kHz-20MHz)

? Output jitter from fractional dividers is typically

< 1ps RMS, many frequencies <0.5ps RMS

? Each output has an independent divider

? Each output configurable as LVDS, LVPECL,

HCSL, 2xCMOS or HSTL

? In 2xCMOS mode, the P and N pins can be

different frequencies (e.g. 125MHz and 25MHz)

? Multiple output supply voltage banks with

CMOS output voltages from 1.5V to 3.3V

? Precise output alignment circuitry and peroutput

phase adjustment

? Per-output enable/disable and glitchless

start/stop (stop high or low)

General Features

? Automatic self-configuration at power-up from

external (ZL30260 or 2) or internal (ZL30261 or 3)

EEPROM; up to 8 configurations pin-selectable

? External feedback for zero-delay applications

? Numerically controlled oscillator mode

? Spread-spectrum modulation mode

? Easy-to-configure design requires no external

VCXO or loop filter components

? SPI or I2C processor Interface

? Core supply voltage options: 2.5V only, 3.3V

only, 1.8V+2.5V or 1.8V+3.3V

? Space-saving 8x8mm QFN56 (0.5mm pitch)

? Easy-to-use evaluation/programming software

Applications

Frequency conversion and frequency synthesis in

a wide variety of equipment types