AD8676:  Ultra Precision, 36 V, 2.8 nV/√Hz Dual Rail-to-Rail Output Op Amp

The AD8676 has dual, precision operational amplifiers offer ultralow offset, drift, and voltage noise combined with very low input bias currents over the full operating temperature range. The ...More

AD8676:  Ultra Precision, 36 V, 2.8 nV/√Hz Dual Rail-to-Rail Output Op Amp

Product Description

The AD8676 has dual, precision operational amplifiers offer ultralow offset, drift, and voltage noise combined with very low input bias currents over the full operating temperature range. The AD8676 has wide bandwidth, rail-to-rail output swings and very low noise. Operation is fully specified from ±5 V to ±15 V. The AD8676 features a rail-to-rail output like that of the OP184, but with wide bandwidth and even lower voltage noise, combined with the precision and low power consumption like that of the industry-standard OP07 amplifier. Unlike other low noise, rail-to-rail op amps, the AD8676 has very low input bias current and low input current noise.

With typical offset voltage of only 12 μV, offset drift of 0.2 μV/°C, and noise of only 0.10 μV p-p (0.1 Hz to 10 Hz), the AD8676 is perfectly suited for applications where large error sources cannot be tolerated. Precision instrumentation, PLL, and other precision filter circuits, position and pressure sensors, medical instrumentation, and strain gage amplifiers benefit greatly from the very low noise, low input bias current, and wide bandwidth. Many systems can take advantage of the low noise, dc precision, and rail-to-rail output swing provided by the AD8676 to maximize SNR and dynamic range.

The smaller packages and low power consumption afforded by the AD8676 allow maximum channel density or minimum board size for space-critical equipment. The AD8676 is specified for the extended industrial temperature range (−40°C to +125°C). The AD8676 amplifier is available in the tiny MSOP-8, and the popular 8-lead, narrow SOIC, leadfree packages. MSOP packaged devices are only available in tape and reel format.


Applications
  • Precision instrumentation
  • PLL filters
  • Laser diode control loops
  • Strain gage amplifiers
  • Medical instrumentation
  • Thermocouple amplifiers

    • Features

    • Very low voltage noise 2.8 nV/√Hz @ 1 kHz
    • Rail-to-rail output swing
    • Low input bias current: 2 nA maximum
    • Very low offset voltage: 50 µV maximum
    • Low input offset drift: 0.6 μV/°C maximum
    • Very high gain: 120 dB
    • Wide bandwidth: 10 MHz typical
    • ±5 V to ±18 V operation
    • For the single version see the AD8675

    Diagrams

    AD8676 Diagram
    Pin Configuration Diagram for AD8676

    Specifications

    -3dB Bandwidth 10MHz
    Slew Rate 2.5V/µs
    Vos 12µV
    Ib 0.5nA
    Input Noise (nV/rtHz) 2.8nV/rtHz
    Vcc-Vee Supply (V) 10 to 36
    Iq per Amplifier (max) 2.9mA
    # OpAmps per Pkg 2
    Operating Temp Range -40 to +125
    Packages SOIC,SOP

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    Part# Small Signal Bandwidth Slew Rate Vos Ib V Noise Density Amplifiers Per Package Widest Temp Range (°C)
    AD8676 10MHz 2.5V/µs 12µV 500pA 2.8nV/rtHz 2 -40 to +125
    AD8675 10MHz 2.5V/µs 10µV 500pA 2.8nV/rtHz 1 -40 to +125
    AD8599 10MHz 16.8V/µs 10µV 25nA 1.15nV/rtHz 2 -40 to +125
    AD8672 10MHz 4V/µs 20µV 3nA 2.8nV/rtHz 2 -40 to +125
    AD8606 10MHz 5V/µs 20µV 200fA 6.5nV/rtHz 2 -40 to +125
    AD8642 3.5MHz 3V/µs 50µV 250fA 27.5nV/rtHz 2 -40 to +125
    ADA4000-2 5MHz 20V/µs 200µV 5pA 16nV/rtHz 2 -40 to +125
    AD8692 10MHz 5V/µs