ADA4622-1BRZ-R7

ADC4622-1BRZ-R7 Application Field and Working Principle

The ADA4622-1BRZ-R7 is a low-cost, low-noise, low-power precision CMOS operational amplifier that is manufactured by Analog Devices, Inc. and is part of its linear amplifiers, instrumentation amplifiers, op amps, and buffer amplifiers product line. The amplifier offers excellent AC and DC performance in both signal conditioning and testing/measurement applications, including signal acquisition and signal isolation, signal and array imaging, instrumentation, and interface systems.

Features and Benefits

• Low quiescent current for power conservation.
• Low offset voltage and drift for improved measurement accuracy.
• Low noise for improved signal-to-noise ratio.
• High common mode rejection ratio (CMRR) for improved measurement accuracy.

The ADA4622-1BRZ-R7 offers a wide supply range and is capable of operating on a single 3 V to 18 V power supply. The amplifier provides rail-to-rail inputs and outputs with low noise, low input bias current, low distortion, low drift, and power consumption of less than 800 µA.

Working Principle

The ADA4622-1BRZ-R7 is a monolithic CMOS operational amplifier that uses a differential input stage with a low-noise transimpedance amplifier for rejection of common-mode signals. It also uses an output stage designed to minimize distortion in the passband and a special-set feedback network to minimize high-frequency noise. The amplifier has an ultra-low offset voltage of 2 µV, a low input bias current of 1 nA, and a low noise of 2 nV/√Hz.

The ADA4622-1BRZ-R7 is designed for precision signal conditioning and data acquisition applications requiring a wide dynamic range. It is especially suitable for applications such as high-precision active filters, sigma-delta modulators, sample-and-hold circuits, and high resolution A/D converters. It is also suitable for high accuracy linearization and offset trim circuits in digital systems.

Conclusion

The ADA4622-1BRZ-R7 amplifier from Analog Devices is a low-cost, low-noise, low-power precision CMOS operational amplifier. It is well-suited for both signal conditioning and testing/measurement applications and offers excellent AC and DC performance. It provides rail-to-rail inputs and outputs, low noise, low input bias current, low distortion, low drift, and ultra-low offset voltage of 2 µV. With its wide supply range, the ADA4622-1BRZ-R7 is an ideal solution for many precision signal conditioning and data acquisition applications.