AD8622ARZ vs OP284FSZ vs OP727ARZ Comparison

The AD8622ARZ is a low power, precision rail-to-rail output Operational Amplifier with low supply currents of only 350µA/amplifier maximum over temperature and supply voltages. It also has an input bias current cancellation circuitry that provides a very low input bias current over the full operating temperature. With a typical offset voltage of only 10µV and noise of only 0.2µVp-p (0.1 to 10Hz), they are perfectly suited for applications where large error sources cannot be tolerated. Many systems can take advantage of the low noise, dc precision and rail-to-rail output swing provided by this to maximize the signal-to-noise ratio and dynamic range for low power operation.

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125µV Maximum very low offset voltage

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215µA/amp Typical supply current

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200pA Maximum input bias current

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1.2µV/°C Maximum low input offset voltage drift

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11nV/√Hz Very low voltage noise

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Rail-to-rail output swing

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Unity gain stable

The OP284FSZ is a Dual 4MHz Bandwidth Operational Amplifier features rail-to-rail inputs and outputs. This amplifier is superb for single-supply applications requiring both AC and precision DC performance. The combination of wide bandwidth, low noise and precision makes the OP284 useful in a wide variety of applications, including filters and instrumentation. Other applications include portable telecommunications equipment, power supply control and protection and use as amplifiers or buffers for transducers with wide output ranges. Sensors requiring a rail-to-rail input amplifier include Hall Effect, piezoelectric and resistive transducers. The ability to swing rail-to-rail at both the input and output enables designers to build multistage filters in single-supply systems and to maintain high signal-to-noise ratios.

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Single-supply operation

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Wide bandwidth

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Low offset voltage (65µV)

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Unity gain stable

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High slew rate

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Low noise (3.9nV/√Hz)

The OP727ARZ is a Dual Precision Operational Amplifier features micropower operation and rail-to-rail output ranges. This amplifier provides improved performance over the industry standard OP07 with ±15V supplies and offers the further advantage of true single-supply operation down than any other high-voltage precision bipolar amplifier. Outputs are stable with capacitive loads of over 500pF. 500R series resistors protect the inputs, allowing input signal levels several volts above the positive supply without phase reversal. Applications for this amplifier include both line-powered and portable instrumentation, remote sensor signal conditioning and precision filters.

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Low offset voltage (100V maximum)

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Low input bias current (10nA maximum)

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Single-supply operation (3 to 30V)

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Dual-supply operation (±5 to ±15V)

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Low supply current (300A/amplifier maximum)

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Unity gain stable

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No phase reversal