• 參數(shù)資料
    型號(hào): MAX4076EUK+T
    廠商: Maxim Integrated Products
    文件頁數(shù): 3/20頁
    文件大?。?/td> 0K
    描述: IC OPAMP FIXED GAIN R/R SOT23-5
    產(chǎn)品培訓(xùn)模塊: Lead (SnPb) Finish for COTS
    Obsolescence Mitigation Program
    標(biāo)準(zhǔn)包裝: 2,500
    系列: GainAmp™
    放大器類型: 通用
    電路數(shù): 1
    輸出類型: 滿擺幅
    轉(zhuǎn)換速率: 0.09 V/µs
    增益帶寬積: 230kHz
    電流 - 輸入偏壓: 1pA
    電壓 - 輸入偏移: 1200µV
    電流 - 電源: 45µA
    電流 - 輸出 / 通道: 20mA
    電壓 - 電源,單路/雙路(±): 2.5 V ~ 5.5 V
    工作溫度: -40°C ~ 70°C
    安裝類型: 表面貼裝
    封裝/外殼: SC-74A,SOT-753
    供應(yīng)商設(shè)備封裝: SOT-23-5
    包裝: 帶卷 (TR)
    MAX4074–MAX4078
    Micropower, SOT23, Rail-to-Rail,
    Fixed-Gain, GainAmp/Open-Loop Op Amps
    ______________________________________________________________________________________
    11
    GainAmp Bandwidth
    GainAmp fixed-gain amplifiers feature factory-trimmed
    precision resistors to provide fixed inverting gains from
    -0.25V/V to -100V/V or noninverting gains from +1.25V/V
    to +101V/V. The op amp core is decompensated strate-
    gically over the gain-set options to maximize band-
    width. Open-loop decompensation increases GBW
    product, ensuring that usable bandwidth is maintained
    with increasing closed-loop gains. A GainAmp with a
    fixed gain of AV = +25V/V has a -3dB bandwidth of
    120kHz. By comparison, a unity-gain-stable op amp con-
    figured for AV = +25V/V would yield a -3dB bandwidth
    of only 8kHz. Decompensation is performed at five inter-
    mediate gain sets, as shown in the Gain Selector
    Guide.
    High-Voltage (±17V)
    Input Fault Protection
    The MAX4074/MAX4075 family includes ±17V input
    fault protection. For normal operation, see the input
    voltage range specification in the Electrical Character-
    istics. Overdriven inputs up to ±17V will not cause out-
    put phase reversal. A back-to-back SCR structure at
    the input pins allows either input to safely swing ±17V
    relative to VEE (Figure 2). Additionally, the internal op
    amp inputs are diode clamped to both supply rails for
    the protection of sensitive input stage circuitry. Current
    through the clamp diodes is limited by a 5k
    resistor at
    the noninverting input, and by RG at the inverting input.
    An IN+ or IN- fault voltage as high as ±17V causes less
    than 3.5mA to flow through the input pin, protecting
    both the GainAmp and the signal source from damage.
    Applications Information
    GainAmp fixed-gain amplifiers offer a precision, fixed-
    gain amplifier in a small package that can be used in a
    variety of circuit board designs. GainAmp fixed-gain
    amplifiers can be used in many op amp circuits that
    use resistive negative feedback to set gain, and do not
    require other connections to the op amp inverting input.
    Both inverting and noninverting op amp configurations
    can be implemented easily using a GainAmp.
    GainAmp Input Voltage Range
    The MAX4074/MAX4075 combine both an op amp and
    gain-setting feedback resistors on the same IC. The
    inverting input voltage range is different from the nonin-
    verting input voltage range because the inverting input
    pin is connected to the RG input series resistor. Just as
    with a discrete design, take care not to saturate the
    inputs/output of the core op amp to avoid signal distor-
    tions or clipping.
    OUT
    IN-
    IN+
    RG
    RF
    5k
    NOTE: INPUT STAGE PROTECTION INCLUDES TWO 17V SCRs
    AND TWO DIODES AT THE INPUT STAGE.
    VEE
    MAX4074
    MAX4075
    17V
    SCR
    VEE
    VCC
    17V
    SCR
    Figure 2. Input Protection
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