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    參數(shù)資料
    型號: ADF4002BRUZ-RL
    廠商: Analog Devices Inc
    文件頁數(shù): 17/20頁
    文件大?。?/td> 0K
    描述: IC PLL FREQUENCY SYNTH 16-TSSOP
    設計資源: Very Low Jitter Encode (Sampling) Clocks for High Speed Analog-to-Digital Converters Using ADF4002 (CN0003)
    標準包裝: 2,500
    類型: 時鐘/頻率合成器(RF),相位檢測器
    PLL:
    輸入: CMOS,TTL
    輸出: 時鐘
    電路數(shù): 1
    比率 - 輸入:輸出: 2:1
    差分 - 輸入:輸出: 是/無
    頻率 - 最大: 400MHz
    除法器/乘法器: 是/無
    電源電壓: 2.7 V ~ 3.3 V
    工作溫度: -40°C ~ 85°C
    安裝類型: 表面貼裝
    封裝/外殼: 16-TSSOP(0.173",4.40mm 寬)
    供應商設備封裝: 16-TSSOP
    包裝: 帶卷 (TR)
    配用: EVAL-ADF4002EBZ1-ND - BOARD EVAL FOR ADF4002
    ADF4002
    Data Sheet
    Rev. C | Page 6 of 20
    PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS
    RSET
    CP
    CPGND
    AGND
    MUXOUT
    LE
    DATA
    CLK
    CE
    DGND
    16
    15
    14
    13
    12
    11
    10
    9
    1
    2
    3
    4
    5
    6
    7
    8
    RFINB
    RFINA
    AVDD
    REFIN
    VP
    DVDD
    ADF4002
    TOP VIEW
    (Not to Scale)
    06052-
    002
    PIN 1
    INDICATOR
    Figure 3. TSSOP Pin Configuration (Top View)
    15 MUXOUT
    14 LE
    13 DATA
    12 CLK
    CPGND 1
    AGND 2
    AGND 3
    20
    C
    P
    11 CE
    6
    7
    8
    DG
    ND
    9
    DG
    ND
    10
    4
    5
    19
    18
    17
    16
    RFINB
    RFINA
    R
    SET
    V
    P
    DV
    DD
    DV
    DD
    A
    V
    DD
    A
    V
    DD
    RE
    F
    IN
    PIN 1
    INDICATOR
    ADF4002
    TOP VIEW
    (Not to Scale)
    06052-
    003
    NOTES
    1. THE EXPOSED PAD MUST BE
    CONNECTED TO AGND.
    Figure 4. LFCSP Pin Configuration (Top View)
    Table 5. Pin Function Descriptions
    Pin No.
    TSSOP
    LFCSP
    Mnemonic
    Description
    1
    19
    RSET
    Connecting a resistor between this pin and CPGND sets the maximum charge pump output current. The
    nominal voltage potential at the RSET pin is 0.66 V. The relationship between ICP and RSET is
    SET
    MAX
    CP
    R
    I
    25.5
    =
    where RSET = 5.1 k and ICPMAX = 5 mA.
    2
    20
    CP
    Charge Pump Output. When enabled, this provides ±ICP to the external loop filter that, in turn, drives the
    external VCO.
    3
    1
    CPGND
    Charge Pump Ground. This is the ground return path for the charge pump.
    4
    2, 3
    AGND
    Analog Ground. This is the ground return path of the RF input.
    5
    4
    RFINB
    Complementary Input to the RF Input. This point must be decoupled to the ground plane with a small
    bypass capacitor, typically 100 pF. See Figure 11.
    6
    5
    RFINA
    Input to the RF Input. This small signal input is ac-coupled to the external VCO.
    7
    6, 7
    AVDD
    Analog Power Supply. This can range from 2.7 V to 3.3 V. Decoupling capacitors to the analog ground
    plane should be placed as close as possible to the AVDD pin. AVDD must be the same value as DVDD.
    8
    REFIN
    Reference Input. This is a CMOS input with a nominal threshold of VDD/2 and a dc equivalent input
    resistance of 100 k. See Figure 10. This input can be driven from a TTL or CMOS crystal oscillator or it can
    be ac-coupled.
    9
    9, 10
    DGND
    Digital Ground.
    10
    11
    CE
    Chip Enable. A logic low on this pin powers down the device and puts the charge pump output into three-
    state mode. Taking this pin high powers up the device, depending on the status of the Power-Down Bit F2.
    11
    12
    CLK
    Serial Clock Input. This serial clock is used to clock in the serial data to the registers. The data is latched into
    the 24-bit shift register on the CLK rising edge. This input is a high impedance CMOS input.
    12
    13
    DATA
    Serial Data Input. The serial data is loaded MSB first with the two LSBs being the control bits. This input is a
    high impedance CMOS input.
    13
    14
    LE
    Load Enable, CMOS Input. When LE goes high, the data stored in the shift registers is loaded into one of
    the four latches; the latch is selected using the control bits.
    14
    15
    MUXOUT
    Multiplexer Output. This allows either the lock detect, the scaled RF, or the scaled reference frequency to
    be accessed externally.
    15
    16, 17
    DVDD
    Digital Power Supply. This can range from 2.7 V to 3.3 V. Decoupling capacitors to the digital ground plane
    should be placed as close as possible to this pin. DVDD must be the same value as AVDD.
    16
    18
    VP
    Charge Pump Power Supply. This should be greater than or equal to VDD. In systems where VDD is 3 V, it can
    be set to 5.5 V and used to drive a VCO with a tuning range of up to 5 V.
    EP
    Exposed Pad. The exposed pad must be connected to AGND.
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