AD8671AR-REEL

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The AD8671AR-REEL is a versatile linear amplifier designed specifically to meet the demands of industrial, automotive, and communications applications. The AD8671AR-REEL is a low-frequency low-noise instrumentation amplifier that can be used for a variety of operations. It is capable of amplifying signals from bipolar input voltage sources with high linearity and low distortion. In addition, the instrumentation amplifier can provide both single-ended and differential inputs. It is also capable of temperature self-compensation.

Description:

AD8671AR-REEL is a low-frequency low-noise instrumentation amplifier which has a unity gain high slew rate of 20V/μs and a noise figure of 36uVrms. The instrumentation amplifier uses a dual-channel, low-noise PMOS input configuration with high common-mode rejection and power supply voltages of 2.7V to 5.5V. Its integrated unity gain stage offers low-distortion and low-noise characteristics while its rail-to-rail input stages provide a wide dynamic range. The device provides excellent differential and common-mode rejection ratio of 106dB and 92 dB, respectively. Its low supply voltage allows the device to be used in battery-powered applications while being capable of operating over a wide range of temperatures (-40°C to +85°C). The amplifiers are available with a choice of gains from 1 to 20 dB.

Applications:

AD8671AR-REEL is widely used in industrial, automotive and communications applications. The amplifier is suitable for low-frequency applications including automotive analog signal acquisition, instrumentation, communication systems, wireless communication systems, sensor integration, and audio conditioning and control. The low-noise PMOS input configuration and high slew rate provide a low distortion and noise response that is ideal for high-precision monitoring and control. The wide operating temperature range and low power supply voltages make the device a great choice for battery-powered applications.

Working Principle:

AD8671AR-REEL has a high common-mode rejection ratio (CMRR) allowing it to reject input signals with common-mode noise. It uses two differential inputs - a noninverting (+) and inverting (-) input and one feedback resistor connected externally to the common-mode voltage source. The voltage difference between the two inputs is amplified by the input amplifier and the Common-Mode Rejection Ratio (CMRR) of the amplifier is determined by the ratio of the input resistor (inverting and non-inverting) to the feedback resistor. The output signal can be obtained by connecting the output resistor (Rout) to the amplifier’s output. The gain of the amplifier is obtained by connecting the input resistor and feedback resistor to the noninverting (+) and inverting (-) inputs respectively. The gain value of the amplifier is determined by the ratio of the input resistor and feedback resistor. AD8671AR-REEL features adjustable gain with gain values ranging from 1 to 20 dB.

Conclusion:

The AD8671AR-REEL linear amplifier is an ideal solution for low-frequency applications requiring high accuracy, low distortion and low noise response. Its low operating voltage, wide operating temperature range and adjustable gain make it an ideal choice for industrial, automotive and communications applications. The device offers superior common-mode rejection ratio, precise gain control and high slew rate with its low power supply voltage operation. It is a versatile and reliable amplifier suitable for a variety of applications.

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