PIN FUNCTIO
  • 參數(shù)資料
    型號(hào)： LTC1591CG#TR
    廠商： Linear Technology
    文件頁(yè)數(shù)： 2/20頁(yè)
    文件大小： 0K
    描述： IC DAC 14BIT PARALLEL IN 28SSOP
    標(biāo)準(zhǔn)包裝： 2,000
    設(shè)置時(shí)間： 2µs
    位數(shù)： 14
    數(shù)據(jù)接口： 并聯(lián)
    轉(zhuǎn)換器數(shù)目： 1
    電壓電源： 單電源
    功率耗散（最大）： 55µW
    工作溫度： 0°C ~ 70°C
    安裝類型： 表面貼裝
    封裝/外殼： 28-SSOP（0.209"，5.30mm 寬）
    供應(yīng)商設(shè)備封裝： 28-SSOP
    包裝： 帶卷 (TR)
    輸出數(shù)目和類型： 1 電流，單極；1 電流，雙極
    采樣率（每秒）： *
    10
    LTC1591/LTC1597
    15917fa
    PIN FUNCTIONS
    UU
    U
    LTC1591
    REF (Pin 1): Reference Input and 4-Quadrant Resistor R2.
    Typically
    ±10V, accepts up to ±25V. In 2-Quadrant mode
    this is the reference input. In 4-quadrant mode, this pin is
    driven by external inverting reference amplifier.
    RCOM (Pin 2): Center Tap Point of the Two 4-Quadrant
    Resistors R1 and R2. Normally tied to the inverting input
    of an external amplifier in 4-quadrant operation, otherwise
    shorted to the REF pin. See Figures 1a and 2a.
    R1 (Pin 3): 4-Quadrant Resistor R1. In 2-quadrant opera-
    tion short to the REF pin. In 4-quadrant mode tie to ROFS
    (Pin 4).
    ROFS (Pin 4): Bipolar Offset Resistor. Typically swings
    ±10V, accepts up to ±25V. In 2-quadrant operation tie to
    RFB. In 4-quadrant operation tie to R1.
    RFB (Pin 5): Feedback Resistor. Normally tied to the output
    of the current to voltage converter op amp. Swings to
    ±VREF. VREF is typically ±10V.
    IOUT1 (Pin 6): DAC Current Output. Tie to the inverting
    input of the current to voltage converter op amp.
    AGND (Pin 7): Analog Ground. Tie to ground.
    LD (Pin 8): DAC Digital Input Load Control Input. When LD
    is taken to a logic high, data is loaded from the input
    register into the DAC register, updating the DAC output.
    WR (Pin 9):DAC Digital Write Control Input. When WR is
    taken to a logic low, data is loaded from the digital input
    pins into the 14-bit wide input register.
    DB13 to D2 (Pins 10 to 21): Digital Input Data Bits.
    DGND (Pin 22): Digital Ground. Tie to ground.
    VCC (Pin 23): The Positive Supply Input. 4.5V ≤ VCC ≥ 5.5V.
    Requires a bypass capacitor to ground.
    DB1, DB0 (Pins 24, 25): Digital Input Data Bits.
    NC (Pins 26, 27): No Connect.
    CLR (Pin 28):Digital Clear Control Function for the DAC.
    When CLR is taken to a logic low, it sets the DAC output
    and all internal registers to zero code for the LTC1591 and
    midscale code for the LTC1591-1.
    LTC1597
    REF (Pin 1): Reference Input and 4-Quadrant Resistor R2.
    Typically
    ±10V, accepts up to ±25V. In 2-Quadrant mode
    this is the reference input. In 4-quadrant mode, this pin is
    driven by external inverting reference amplifier.
    RCOM (Pin 2): Center Tap Point of the Two 4-Quadrant
    Resistors R1 and R2. Normally tied to the inverting input
    of an external amplifier in 4-quadrant operation, otherwise
    shorted to the REF pin. See Figures 1b and 2b.
    R1 (Pin 3): 4-Quadrant Resistor R1. In 2-quadrant opera-
    tion short to the REF pin. In 4-quadrant mode tie to ROFS
    (Pin 4).
    ROFS (Pin 4): Bipolar Offset Resistor. Typically swings
    ±10V, accepts up to ±25V. In 2-quadrant operation tie to
    RFB. In 4-quadrant operation tie to R1.
    RFB (Pin 5): Feedback Resistor. Normally tied to the output
    of the current to voltage converter op amp. Swings to
    ±VREF. VREF is typically ±10V.
    IOUT1 (Pin 6): DAC Current Output. Tie to the inverting
    input of the current to voltage converter op amp.
    AGND (Pin 7): Analog Ground. Tie to ground.
    LD (Pin 8): DAC Digital Input Load Control Input. When LD
    is taken to a logic high, data is loaded from the input
    register into the DAC register, updating the DAC output.
    WR (Pin 9):DAC Digital Write Control Input. When WR is
    taken to a logic low, data is loaded from the digital input
    pins into the 16-bit wide input register.
    DB15 to D4 (Pins 10 to 21): Digital Input Data Bits.
    DGND (Pin 22): Digital Ground. Tie to ground.
    VCC (Pin 23): The Positive Supply Input. 4.5V ≤ VCC ≥ 5.5V.
    Requires a bypass capacitor to ground.
    DB3 to DB0 (Pins 24 to 27): Digital Input Data Bits.
    CLR (Pin 28):Digital Clear Control Function for the DAC.
    When CLR is taken to a logic low, it sets the DAC output
    and all internal registers to zero code for the LTC1597 and
    midscale code for the LTC1597-1.
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