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  • 參數(shù)資料
    型號: MAX1798
    廠商: Maxim Integrated Products, Inc.
    元件分類: 數(shù)字信號處理
    英文描述: Replaced by TMS320C6722B : Digital Signal Processor 144-QFP
    中文描述: CDMA蜂窩電話/PCS電話系統(tǒng)電源
    文件頁數(shù): 7/20頁
    文件大小: 642K
    代理商: MAX1798
    M
    CDMA Cellular/PCS System
    Power Supplies
    _______________________________________________________________________________________
    7
    Note 1:
    The dropout voltage is defined as (V
    IN
    - V
    OUT
    ) when V
    OUT
    is 100mV below the value of V
    OUT
    for V
    IN
    = V
    OUT
    + 1V.
    Note 2:
    Specifications to -40
    °
    C are guaranteed by design, not production tested.
    Note 3:
    Specifications are guaranteed by design, not production tested in the EGP (QFN) package.
    CONDITIONS
    SCLK Clock Frequency
    SCLK Low Period
    SCLK High Period
    Data Hold Time
    Data Setup Time
    f
    SCLK
    t
    cl
    t
    ch
    t
    HD_DAT
    t
    SU_DAT
    2
    MHz
    ns
    ns
    ns
    ns
    125
    125
    0
    125
    CS
    Assertion to SCLK Rising
    Edge Setup Time
    t
    CSS
    200
    ns
    CS
    Deassertion to SCLK Rising
    Edge Setup Time
    t
    CS1
    200
    ns
    SCLK Rising Edge to
    CS
    Deassertion
    t
    CSH
    200
    ns
    SCLK Rising Edge to
    CS
    Assertion
    t
    CSO
    200
    ns
    CS
    High Period
    t
    CSW
    300
    ns
    UNITS
    MIN
    TYP
    MAX
    SYMBOL
    PARAMETER
    ELECTRICAL CHARACTERISTICS (continued)
    (V
    IN1
    = V
    IN2/3
    = V
    IN4/5
    = V
    SCLK (SCK)
    = V
    DIN (SDA)
    = V
    CS
    (AS)
    = V
    OFF
    = 3.6V;
    ON
    = GND = PGND = 0; RSO, ONO, DR1, DR2 =
    open; BP bypassed with 0.01μF, OUT1 bypassed with 4.7μF; OUT2, OUT3, OUT4, OUT5 bypassed with 2.2μF; OUT1
    5 set to 2.98V,
    T
    A
    = -40
    °
    C to +85
    °
    C
    , unless otherwise noted.) (Note 2)
    SPI TIMING (MAX1798/MAX1798A)
    OUTPUT VOLTAGE ACCURACY (OUT1)
    vs. LOAD CURRENT
    -2.0
    -1.0
    -1.5
    0
    -0.5
    1.5
    1.0
    0.5
    2.0
    0
    100
    LOAD CURRENT (mA)
    50
    150
    200
    250
    300
    M
    A
    V
    OUT1
    = 3.3V
    V
    OUT1
    = 1.8V
    V
    OUT1
    = 2.98V
    OUTPUT VOLTAGE ACCURACY (OUT2–5)
    vs. LOAD CURRENT
    -2.0
    -1.0
    -1.5
    0
    -0.5
    1.5
    1.0
    0.5
    2.0
    0
    50
    25
    75
    100
    125
    150
    M
    LOAD CURRENT (mA)
    A
    V
    OUT1
    = 1.8V
    V
    OUT1
    = 3.3V
    V
    OUT1
    = 2.98V
    -2.0
    -1.0
    -1.5
    0
    -0.5
    1.5
    1.0
    0.5
    2.0
    -40
    10
    -15
    35
    60
    85
    OUTPUT VOLTAGE ACCURACY (OUT1)
    vs. TEMPERATURE
    M
    TEMPERATURE (°C)
    A
    I
    LOAD
    = 70mA
    V
    OUT1(NOM)
    = 2.98V
    Typical Operating Characteristics
    (T
    A
    = +25
    °
    C, unless otherwise noted.)
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