Instrumentation Amplifiers | In-Amp | INA128 | RS
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    Instrumentation Amplifiers

    Instrumentation amplifiers (sometimes shortened to In-Amps) are a type of precision gain block used in electronic and measurement test equipment. Instrumentation amplifiers act as a differential amplifier; a type of electronic amplifier that amplifies the voltage difference between two inputs but suppresses any voltage signals that are common to the two inputs. RS offer a range of instrumentation amplifiers from several trusted brands in the industry, including Analog Devices, Microchip, Texas Instruments, and more.

    How do instrumentation amplifiers work?

    Instrumentation amplifiers are almost always composed of 3 op-amps (operational amplifiers) and several resistors. They provide the most important function of CMR (common-mode rejection) by cancelling out any signals that have the same potential as received by both of the inputs. Any signals that have different potentials get amplified. They are used for low frequency signals (such as <1MHz), which they amplify whilst also cutting out any common-mode noise that may be present in the input signal.

    What are the instrumentation amplifiers used for?

    An instrumentation amplifier measures small signals in a noisy environment. The noise generally is "common-mode noise" (the difference between the noise-free common-mode voltage and the actual common-mode voltage). An instrumentation amplifier uses its common-mode rejection to distinguish the noise from the signal of interest. Instrumentation amplifiers are needed in nearly every field of electronics, particularly in the test and measurement industry. They can be used as a voltage follower, selective inversion circuit, a current-to-voltage converter, active rectifier, integrator, a variety of filters, and a voltage comparator.

    Unlike instrumentation amplifiers (In Amp), operational amplifiers (Op-Amp) are high-gain voltage amplifying devices with a differential input.

    Typical applications

    • Test & Measurement Industrial Devices
    • Data Acquisition Devices
    • Medical Devices

    226 產品顯示為 Instrumentation Amplifiers

    Texas Instruments
    Dual, Single
    PDIP
    Through Hole
    5 V
    16
    ±15V
    No
    0.5mV
    -55 °C
    +125 °C
    100GΩ
    72dB
    -
    -
    Texas Instruments
    Dual
    SOIC
    Surface Mount
    -
    16
    ±15V
    No
    -
    -40 °C
    +85 °C
    10000GΩ
    75dB
    -
    4.5 mA
    Texas Instruments
    Dual
    SOIC
    Surface Mount
    -
    16
    ±15V
    No
    50µV
    -40 °C
    +85 °C
    10GΩ
    80dB
    -
    6.5 mA
    Texas Instruments
    Dual, Single
    PDIP
    Through Hole
    12 V, 15 V, 18 V, 24 V, 28 V, 5 V, 9 V
    8
    ±15V
    No
    0.125mV
    -40 °C
    +85 °C
    10GΩ
    106dB
    -
    3 mA
    Texas Instruments
    Dual
    SOIC
    Surface Mount
    ±15 V
    8
    -
    -
    50µV
    -
    -
    -
    -
    -
    -
    Texas Instruments
    Dual, Single
    MSOP
    Surface Mount
    1.8 → 5.5 V
    8
    ±0.9 → ±2.75V
    Rail to Rail Output
    0.025mV
    -40 °C
    +150 °C
    100GΩ
    80dB
    150kHz
    0.075 mA
    Texas Instruments
    Dual
    PDIP
    Through Hole
    -
    16
    ±15V
    No
    125µV
    -40 °C
    +85 °C
    10GΩ
    75dB
    1MHz
    7.5 mA
    Texas Instruments
    Dual
    PDIP
    Through Hole
    ±15 V
    8
    -
    -
    50µV
    -
    -
    -
    -
    1MHz
    -
    Texas Instruments
    Single
    SOIC
    Surface Mount
    3 V, 5 V
    8
    -
    Rail to Rail Output
    1mV
    -65 °C
    +150 °C
    10000GΩ
    80dB
    -
    -
    Texas Instruments
    Dual
    SOIC
    Surface Mount
    3 V, 5 V, 9 V, 12 V, 15 V, 18 V, 24 V, 28 V
    8
    ±15V
    -
    0.25mV
    -40 °C
    +85 °C
    1GΩ
    83dB
    -
    0.2 mA
    Texas Instruments
    Dual, Single
    VSSOP
    Surface Mount
    2.7 to 36 V
    8
    ±1.35 to ±18V
    Rail to Rail Output
    150µV
    -40 °C
    +125 °C
    -
    80dB
    1MHz
    200 μA
    Texas Instruments
    Dual
    PDIP
    Through Hole
    -
    14
    ±15V
    No
    2mV
    0 °C
    +70 °C
    10GΩ
    80dB
    -
    -
    Texas Instruments
    Dual
    SOIC
    Surface Mount
    -
    16
    ±15V
    No
    125µV
    -40 °C
    +85 °C
    10GΩ
    75dB
    1MHz
    7.5 mA
    Texas Instruments
    Dual
    SOIC
    Surface Mount
    -
    8
    ±15V
    -
    125µV
    -40 °C
    +85 °C
    100GΩ
    73dB
    1.3MHz
    -
    Texas Instruments
    Dual
    PDIP
    Through Hole
    ±18 V
    16
    -
    No
    -
    -
    -
    -
    -
    1MHz
    -
    Texas Instruments
    Dual, Single
    SOIC
    Surface Mount
    5 V
    16
    ±15V
    No
    0.25mV
    -55 °C
    +125 °C
    100GΩ
    78dB
    -
    -
    Texas Instruments
    Dual
    SOL
    Surface Mount
    -
    16
    ±12 V, ±15 V, ±3 V, ±5 V, ±9 V
    No
    125µV
    -40 °C
    +85 °C
    10GΩ
    110dB
    1MHz
    3 mA
    Texas Instruments
    Dual, Single
    SON
    Surface Mount
    1.8 to 5.5 V
    8
    ±0.9 to ±2.75V
    Rail to Rail Output
    ±25µV
    -40 °C
    +125 °C
    -
    80dB
    150kHz
    -
    Texas Instruments
    Dual
    PDIP
    Through Hole
    ±18 V
    16
    -
    No
    -
    -
    -
    -
    -
    1MHz
    -
    Texas Instruments
    Single
    TSSOP
    Surface Mount
    40 V
    24
    -
    Rail to Rail Input/Output
    250µV
    -40 °C
    +125 °C
    -
    140dB
    6MHz
    ±10 mA
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