AD8278
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AD8278

Low Power, Wide Supply Range, Low Cost Difference Amplifiers, G = ½, 2

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Part Details
Part Models 10
1ku List Price Starting From $1.12
Features
  • Wide input range beyond supplies
  • Rugged input overvoltage protection
  • Low supply current: 200 μA maximum (per amplifier)
  • Low power dissipation:
    0.5 mW at VS = 2.5 V
  • Bandwidth: 1 MHz (G = ½)
  • CMRR: 80 dB minimum,
    dc to 20 kHz (G = ½, B Grade)
  • Low offset voltage drift: ±1 μV/°C maximum (B Grade)
  • Low gain drift: 1 ppm/°C maximum (B Grade)
  • Enhanced slew rate: 1.4 V/μs
  • Wide power supply range
    Single supply: 2 V to 36 V
    Dual supplies: ±2 V to ±18 V
  • 8-lead SOIC, 14-lead SOIC, and MSOP packages
Additional Details
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The AD8278 and AD8279 are general-purpose difference amplifiers intended for precision signal conditioning in power critical applications that require both high performance and low power. The AD8278 and AD8279 provide exceptional common-mode rejection ratio (80 dB) and high bandwidth while amplifying input signals that are well beyond the supply rails. The on-chip resistors are laser trimmed for excellent gain accuracy and high CMRR. They also have extremely low gain drift vs. temperature.

The common-mode range of the amplifier extends to almost triple the supply voltage (for G = ½), making the amplifer ideal for single-supply applications that require a high common-mode voltage range. The internal resistors and ESD circuitry at the inputs also provide overvoltage protection to the op amp.

The AD8278 and AD8279 can be used as difference amplifiers with G = ½ or G = 2. They can also be connected in a high precision, single-ended configuration for non inverting and inverting gains of −½, −2, +3, +2, +1½, +1, or +½. The AD8278 and AD8279 provide an integrated precision solution that has a smaller size, lower cost, and better performance than a discrete alternative.

The AD8278 and AD8279 operate on single supplies (2.0 V to 36 V) or dual supplies (±2 V to ±18 V). The maximum quiescent supply current is 200 μA, which is ideal for battery-operated and portable systems. For unity-gain difference amplifiers with similar performance, refer to the AD8276 and AD8277 data sheets.

The AD8278 is available in the space-saving 8-lead MSOP and SOIC packages, and the AD8279 is offered in a 14-lead SOIC package. Both are specified for performance over the industrial temperature range of −40°C to +85°C and are fully RoHS compliant.

Applications

  • Voltage measurement and monitoring
  • Current measurement and monitoring
  • Instrumentation amplifier building block
  • Portable, battery-powered equipment
  • Test and measurement
  • Part Models 10
    1ku List Price Starting From $1.12

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    Jan 5, 2015

    - 14_0246

    Qualification of ASE Chungli, as an Alternate Assembly Site for Select MSOP Devices

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    May 15, 2012

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    Halogen Free Material Change for mini SOIC Products

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    Nov 23, 2010

    - 10_0004

    Halogen Free Material Change for SOIC Narrow Body Products Assembled at Amkor

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    Part Models

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    PCN

    Jan 5, 2015

    - 14_0246

    arrow down

    Qualification of ASE Chungli, as an Alternate Assembly Site for Select MSOP Devices

    AD8278ARMZ

    PRODUCTION

    AD8278ARMZ-R7

    PRODUCTION

    AD8278ARMZ-RL

    PRODUCTION

    AD8278BRMZ

    PRODUCTION

    AD8278BRMZ-R7

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    AD8278BRMZ-RL

    PRODUCTION

    May 15, 2012

    - 10_0006

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    Halogen Free Material Change for mini SOIC Products

    AD8278ARMZ

    PRODUCTION

    AD8278ARMZ-R7

    PRODUCTION

    AD8278ARMZ-RL

    PRODUCTION

    AD8278BRMZ

    PRODUCTION

    AD8278BRMZ-R7

    PRODUCTION

    AD8278BRMZ-RL

    PRODUCTION

    Nov 23, 2010

    - 10_0004

    arrow down

    Halogen Free Material Change for SOIC Narrow Body Products Assembled at Amkor

    AD8278ARZ

    PRODUCTION

    AD8278ARZ-R7

    PRODUCTION

    AD8278BRZ

    PRODUCTION

    AD8278BRZ-R7

    PRODUCTION

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