MAX421CPD+

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The MAX421CPD+ is a low-cost, high-speed, CMOS single-supply instrumentation amplifier. The device is unity-gain stable, has a gain accuracy of 0.001%, and has a wideband voltage-follower output capability. The device offers a fast settling time of 1.50 microseconds, a low drift of 0.005%, and a high common-mode rejection (CMRR) of 60 dB. The MAX421CPD+ has a low DC offset voltage of 1 mV and a low DC offset drift of 0.1 mV/°C.

MAX421CPD+

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MAX421CPD+ Working Principle

The MAX421CPD+ is a unity-gain stable, low-cost instrumentation amplifier that is based on CMOS technology. It is designed for applications where precision signal conditioning and low power dissipation is required.The MAX421CPD+ can be used in a wide variety of instrumentation applications, including signal conditioning, data acquisition, power supply amplifiers, low-noise amplifiers, signal tracking, current bridges, filters, oscilloscope signal sources and other common instrumentation applications.The MAX421CPD+ works by presenting input signals to two series-matched input amplifiers, which then feed the signals to two common-mode gain stages. The two common-mode gain stages then combine to form a single differential signal which is amplified by the main amplifier stage. The input signal is then fed to the output buffer, which drives a unity-gain stable voltage follower output.The MAX421CPD+ has a wide bandwidth with a fast settling time of 1.50 microseconds. It also has a low drift of 0.005% and a high CMRR (common-mode rejection ratio) of up to 60 dB. The device also has a low DC offset voltage of 1 mV and a low DC offset drift of 0.1 mV/°C.

Conclusion

The MAX421CPD+ is a low-cost, high-speed, CMOS single-supply instrumentation amplifier. Its wideband voltage-follower output capability, low power dissipation, high CMRR, fast settling time, and low drift make it an ideal choice for many instrumentation applications. The device can be used in signal conditioning, data acquisition, power supply amplifiers, low-noise amplifiers, signal tracking, current bridges, filters, oscilloscope signal sources and other typical instrumentation applications.

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