OP2177:  Precision, Dual, Low Noise Low Input Bias Current Operational Amplifiers

The OPx177 family consists of very high precision, single, dual, and quad amplifiers featuring extremely low offset voltage and drift, low input bias current, low noise, and low power consumption. ...More

OP2177:  Precision, Dual, Low Noise Low Input Bias Current Operational Amplifiers

Product Description

The OPx177 family consists of very high precision, single, dual, and quad amplifiers featuring extremely low offset voltage and drift, low input bias current, low noise, and low power consumption. Outputs are stable with capacitive loads of over 1000 pF with no external compensation. Supply current is less than 500 μA per amplifier at 30 V. Internal 500 Ω series resistors protect the inputs, allowing input signal levels several volts beyond either supply without phase reversal.

Unlike previous high voltage amplifiers with very low offset voltages, the OP1177 (single) and OP2177 (dual) amplifiers are available in tiny 8-lead surface-mount MSOP and 8-lead narrow SOIC packages. The OP4177 (quad) is available in TSSOP and 14-lead narrow SOIC packages. Moreover, specified performance in the MSOP and the TSSOP is identical to performance in the SOIC package. MSOP and TSSOP are available in tape and reel only.

The OPx177 family offers the widest specified temperature range of any high precision amplifier in surface-mount packaging. All versions are fully specified for operation from −40°C to +125°C for the most demanding operating environments.

Applications for these amplifiers include precision diode power measurement, voltage and current level setting, and level detection in optical and wireless transmission systems. Additional applications include line-powered and portable instrumentation and controls—thermocouple, RTD, strain-bridge, and other sensor signal conditioning—and precision filters.

Applications
  • Wireless base station control circuits
  • Optical network control circuits
  • Instrumentation
  • Sensors and controls
    Thermocouples
    Resistor thermal detectors (RTDs)
    Strain bridges
    Shunt current measurements
  • Precision filters

    • Data Sheet, Rev. E, 11/07

    Features

    • Low Offset Voltage: 60 µV Max
    • Very Low Offset Voltage Drift: 0.7 µV/°C Max
    • Low Input Bias Current: 2 nA Max
    • Low Noise: 8 nV/vHz
    • CMRR, PSRR, and AVO > 120 dB Min
    • Low Supply Current: 400 µA/Amp
    • Dual Supply Operation:
      ±2.5 V to ±15 V
    • Unity Gain Stable
    • No Phase Reversal
    • Inputs Internally Protected Beyond
      Supply Voltage

    Diagrams

    OP2177 Diagram
    Pin Configuration Diagram for OP2177

    Specifications

    -3dB Bandwidth 1.3MHz
    Slew Rate 700mV/µs
    Vos 15µV
    Ib 500pA
    Input Noise (nV/rtHz) 7.9nV/rtHz
    Vcc-Vee Supply (V) 5 to 36
    Iq per Amplifier (max) 500µA
    # 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)
    OP2177 1.3MHz 700mV/µs 15µV 500pA 7.9nV/rtHz 2 -40 to +125
    AD8676 10MHz 2.5V/µs 12µV 500pA 2.8nV/rtHz 2 -40 to +125
    OP4177 1.3MHz 700mV/µs 15µV 500pA 7.9nV/rtHz 4 -40 to +125
    OP1177 1.3MHz 700mV/µs 15µV 500pA 7.9nV/rtHz 1 -40 to +125
    AD8629 2.5MHz 1V/µs 1µV 30pA 22nV/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