AVCC = 4.75 V to 5.25 V, C
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    參數(shù)資料
    型號: EVAL-AD7262EDZ
    廠商: Analog Devices Inc
    文件頁數(shù): 31/33頁
    文件大?。?/td> 0K
    描述: BOARD EVAL CONTROL AD7262
    標準包裝: 1
    ADC 的數(shù)量: 2
    位數(shù): 12
    采樣率(每秒): 1M
    數(shù)據(jù)接口: 串行
    輸入范圍: 5 Vpp
    在以下條件下的電源(標準): 120mW @ 1MSPS
    工作溫度: -40°C ~ 105°C
    已用 IC / 零件: AD7262
    已供物品: 板,CD
    AD7262
    Rev. 0 | Page 6 of 32
    TIMING SPECIFICATIONS
    AVCC = 4.75 V to 5.25 V, CA_CBVCC = CC_CDVCC = 2.7 V to 5.25 V, VREF = 2.5 V internal/external; TA = TMIN to TMAX, unless otherwise noted.1
    Table 2.
    Limit at TMIN, TMAX
    Parameter
    2.7 V ≤ VDRIVE ≤ 3.6 V
    4.75 V ≤ VDRIVE ≤ 5.25 V
    Unit
    Description
    fSCLK
    200
    kHz min
    40
    MHz max
    32
    MHz typ
    20
    MHz max
    AD7262-5
    tCONVERT
    19 × tSCLK
    ns max
    tSCLK = 1/fSCLK
    475
    ns max
    AD7262
    950
    ns max
    AD7262-5
    tQUIET
    13
    ns min
    Minimum time between end of serial read/bus relinquish
    and next falling edge of CS
    t2
    10
    ns min
    CS to SCLK setup time
    15
    ns max
    Delay from 19th SCLK falling edge until DOUTA and DOUTB are
    three-state disabled
    t4
    29
    23
    ns max
    Data access time after SCLK falling edge
    t5
    15
    13
    ns min
    SCLK to data valid hold time
    t6
    0.4 × tSCLK
    ns min
    SCLK high pulse width
    t7
    0.4 × tSCLK
    ns min
    SCLK low pulse width
    t8
    13
    ns min
    CS rising edge to falling edge pulse width
    t9
    13
    ns max
    CS rising edge to DOUTA, DOUTB, high impedance/bus
    relinquish
    t10
    5
    ns min
    SCLK falling edge to DOUTA, DOUTB, high impedance
    35
    ns max
    SCLK falling edge to DOUTA, DOUTB, high impedance
    t11
    2
    μs min
    Minimum CAL pin high time
    t12
    2
    μs min
    Minimum time between the CAL pin high and the CS
    falling edge
    t13
    3
    ns min
    DIN setup time prior to SCLK falling edge
    t14
    3
    ns min
    DIN hold time after SCLK falling edge
    tPOWER-UP
    240
    μs max
    Internal reference, with a 1 μF decoupling capacitor
    15
    μs max
    With an external reference, 10 μs typical
    SCLK
    15
    19
    DOUTA
    THREE-STATE
    t4
    23
    4
    20
    t5
    THREE-
    STATE
    t7
    t3
    18
    DB9A
    DB10A
    DB11A
    21
    29
    30
    31
    1 Sample tested during initial release to ensure compliance. All input signals are specified with tR = tF = 5 ns (10% to 90% of AVCC) and timed from a voltage level of 1.6 V.
    All timing specifications given are with a 25 pF load capacitance. With a load capacitance greater than this value, a digital buffer or latch must be used. See the
    Terminology section.
    2 See the Serial Interface section.
    3 The time required for the output to cross 0.4 V or 2.4 V.
    TIMING DIAGRAM
    CS
    DB1A
    DB0A
    t2
    t9
    tQUIET
    t8
    t6
    DOUTB
    THREE-STATE
    THREE-
    STATE
    DB9B
    DB10B
    DB11B
    DB1B
    DB0B
    076
    06
    -00
    2
    Figure 2. Serial Interface Timing Diagram
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