OP1177AR vs OP1177ARMZ-REEL vs ISL28117FBBZ-T7 Comparison

**GENERAL 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.

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*FEATURES**

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*Low offset voltage: 60 μV maximum**

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*Very low offset voltage drift: 0.7 μV/°C maximum**

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*Low input bias current: 2 nA maximum**

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*Low noise: 8 nV/√Hz typical**

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*CMRR, PSRR, and A****VO ****> 120 dB minimum**

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*Low supply current: 400 μA per amplifier**

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*Dual supply operation: ±2.5 V to ±15 V**

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*Unity-gain stable**

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*No phase reversal**

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*Inputs internally protected beyond supply voltage**

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*APPLICATIONS**

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*Wireless base station control circuits**

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*Optical network control circuits**

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*Instrumentation**

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*Sensors and controls**

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*Thermocouples**

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*Resistor thermal detectors (RTDs)**

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*Strain bridges**

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*Shunt current measurements**

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*Precision filters**

Product Details 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 consump-tion. 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.

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*Applications**

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Wireless base station control circuits

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Optical network control circuits

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Instrumentation

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Sensors and controls

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Precision filters

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Low offset voltage: 60 μV maximum

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Very low offset voltage drift: 0.7 μV/°C maximum

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Low input bias current: 2 nA maximum

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Low noise: 8 nV/√Hz typical

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CMRR, PSRR, and AVO > 120 dB minimum

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Low supply current: 400 μA per amplifier

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Dual supply operation: ±2.5 V to ±15 V

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Unity-gain stable

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No phase reversal

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Inputs internally protected beyond supply voltage

The ISL28117 and ISL28217 are a family of very high precision amplifiers featuring low noise vs power consumption, low offset voltage, low IBIAS current and low temperature drift making them the ideal choice for applications requiring both high DC accuracy and AC performance. The combination of precision, low noise, and small footprint provides the user with outstanding value and flexibility relative to similar competitive parts. Applications for these amplifiers include precision active filters, medical and analytical instrumentation, precision power supply controls, and industrial controls. The ISL28117 single and ISL28217 dual are offered in an 8 Ld SOIC package. Both devices are offered in standard pin configurations and operate over the extended temperature range to -40°C to +125°C.

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*Features**

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*Applications**