AD8278BRMZ-R7

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AD8278BRMZ-R7 Application Field and Working Principle

AD8278BRMZ-R7 belongs to the family of instrumentation amplifiers. It is a precision low-power low-offset amplifier combined with best-in-class SENSITIVITY(SENS). Its applications are widely used in medical, automotive, and industrial fields, like bio-sensing, current sensing, and strain measurement. Besides, It also helps to improve the accuracy coordination and performance of automotive, building automation, and aerospace applications.

The main feature of the AD8278BRMZ-R7 is its low power, low noise and high SENSITIVITY. It has a single-supply of ±2V to ±18V, and drain current of 340mA in the single-ended output configuration. It features an offset voltage range of 0.1μV and an input noise of 2nV/√Hz. Because of its power efficiency, it can be powered by two 2.1V AA cells, less than 7.5 mW in a single-channel configuration. Moreover, the AD8278BRMZ-R7 provides a 16bit over-sampling ADC compatible output.

The AD8278BRMZ-R7 works according to the principle of instrumentation amplifiers. It accepts its input from a high impedance source and directly amplifies it with a high CMRR. It is combined with best-in-class SENSITIVITY (SENS) which is possible by means of an on-chip buffer amplifier. This buffer amplifier can accept an input signal as low as 200μVrms. The amplified signal is then amplified again by the gain block and is output to the 16 bit over-sampling ADC compatible output.

Additionally, the AD8278BRMZ-R7 provides a low-offset, high-gain amplifier, providing excellent DC accuracy. The amplifier has a low-drift of ±1μV/°C and a frequency response flat up to 100 kHz. Furthermore, the AD8278BRMZ-R7 offers a gain flatness of + 0.02 dB/div, power stability of ±0.3%/V and low distortion of -75 dBc at 10 kHz. Thus, it is suitable for applications such as mobility and current sensing.

To summarize, AD8278BRMZ-R7 belongs to the family of instrumentation amplifiers and is best suited for medical, automotive and industrial applications because of its low power, low noise, high sensitivity and superior performance. It has a single-supply of ±2V to ±18V and drain current of 340mA in the single-ended output configuration. It has a low-offset, high-gain amplifier, providing excellent DC accuracy, with a low-drift of ±1μV/°C, a frequency response flat up to 100kHz, and a gain flatness of + 0.02 dB/div. Furthermore, it offers power stability of ±0.3%/V and low distortion of -75 dBc at 10kHz. Overall, the AD8278BRMZ-R7 is a precise, low-power, low-noise amplifier with superior performance.

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