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    參數(shù)資料
    型號: ICS8421002AGILF
    廠商: IDT, Integrated Device Technology Inc
    文件頁數(shù): 1/15頁
    文件大?。?/td> 0K
    描述: IC FREQ SYNTHESIZER 20-TSSOP
    標準包裝: 74
    系列: HiPerClockS™, FemtoClock™
    類型: 頻率合成器
    PLL: 帶旁路
    輸入: LVCMOS,LVTTL,晶體
    輸出: LVHSTL
    電路數(shù): 1
    比率 - 輸入:輸出: 2:2
    差分 - 輸入:輸出: 無/是
    頻率 - 最大: 226.66MHz
    除法器/乘法器: 是/無
    電源電壓: 2.375 V ~ 3.465 V
    工作溫度: -40°C ~ 85°C
    安裝類型: 表面貼裝
    封裝/外殼: 20-TSSOP(0.173",4.40mm 寬)
    供應商設備封裝: 20-TSSOP
    包裝: 管件
    其它名稱: 8421002AGILF
    FEMTOCLOCKS CRYSTAL-TO-HSTL
    FREQUENCY SYNTHESIZER
    ICS8421002I
    IDT / ICS HSTL FREQUENCY SYNTHESIZER
    1
    ICS8421002I REV B
    MARCH 02, 2009
    GENERAL DESCRIPTION
    The ICS8421002I is a 2 output HSTL Synthesizer
    optimized to generate Fibre Channel reference clock
    frequencies and is a member of the HiPerClocksTM
    family of high performance clock solutions from IDT.
    Using a 26.5625MHz 18pF parallel resonant crystal,
    the following frequencies can be generated based on the 2
    frequency select pins (F_SEL[1:0]): 212.5MHz, 187.5MHz,
    159.375MHz, 106.25MHz and 53.125MHz. The ICS8421002I uses
    IDT’s 3rd generation low phase noise VCO technology and can
    achieve 1ps or lower typical rms phase jitter, easily meeting Fibre
    Channel jitter requirements. The ICS8421002I is packaged in a
    small 20-pin TSSOP package.
    FEATURES
    Two HSTL outputs (VOHmax = 1.5V)
    Selectable crystal oscillator interface
    or LVCMOS/LVTTL single-ended input
    Supports the following output frequencies: 212.5MHz,
    187.5MHz, 159.375MHz, 106.25MHz, 53.125MHz
    VCO range: 560MHz - 680MHz
    RMS phase jitter @ 212.5MHz, using a 26.5625MHz crystal
    (637kHz - 10MHz): 0.59ps (typical)
    Power supply modes:
    Core/Output
    3.3V/1.8V
    2.5V/1.8V
    -40°C to 85°C ambient operating temperature
    Available in both standard (RoHS 5) an lead-free (RoHS 6)
    packages
    HiPerClockS
    ICS
    1
    0
    1
    0
    Phase
    Detector
    VCO
    M = 24 (fixed)
    F_SEL[1:0]
    0 0
    ÷3 (default)
    0 1
    ÷4
    1 0
    ÷6
    1 1
    ÷12
    2
    OSC
    BLOCK DIAGRAM
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    1
    FREQUENCY SELECT FUNCTION TABLE
    F_SEL[1:0]
    nPLL_SEL
    REF_CLK
    XTAL_IN
    XTAL_OUT
    nXTAL_SEL
    MR
    Q0
    nQ0
    Q1
    nQ1
    Pulldown
    26.5625MHz
    Pulldown
    ICS8421002I
    20-Lead TSSOP
    6.5mm x 4.4mm x 0.92mm
    package body
    G Package
    Top View
    nc
    VDDO
    Q0
    nQ0
    MR
    nPLL_SEL
    nc
    VDDA
    F_SEL0
    VDD
    1
    2
    3
    4
    5
    6
    7
    8
    9
    10
    20
    19
    18
    17
    16
    15
    14
    13
    12
    11
    VDDO
    Q1
    nQ1
    GND
    VDD
    nXTAL_SEL
    REF_CLK
    XTAL_IN
    XTAL_OUT
    F_SEL1
    PIN ASSIGNMENT
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