AD8221TRMZ-EP-R7

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AD8221TRMZ-EP-R7 is a single-channel low-noise, low-power instrumentation amplifier from Analog Devices, Inc. It is specifically designed to provide high accuracy and low power consumption in portable and battery-powered applications. The part is offered in a small, 6-pin SC70 package, allowing it to be space-saving and cost-effective in end applications. It also has a -40°C to +85°C operational temperature range, allowing it to be used in a wide range of temperature environments.

Application Field

AD8221TRMZ-EP-R7 is suitable for portable and battery-powered applications, such as low-power instrumentation equipment, handheld test equipment, medical equipment, and more. It can be used as an A/D driver because it has high common-mode gain accuracy and low offset voltage; and because it has excellent common-mode rejection at low frequencies, it is also suitable for AC measurements like true RMS measurement. It can also be used as a programmable low-noise mixer or as an active load in bridge circuits.

Working Principle

The AD8221TRMZ-EP-R7 is an instrumentation amplifier made up of a single gain stage with an overall gain set by a single external resistor. It has an input bias current which is much lower than other amplifiers, allowing it to measure very small signals accurately. This amplifier also has low input offset voltage, low drift, and high accuracy. It is a rail-to-rail device, which means it can operate on full range voltages between the two power supply rails.

The AD8221TRMZ-EP-R7 also has a low power dissipation, amounting only to 1.9 mW maximum, which makes it a very efficient instrumentation amplifier for portable applications that require low power consumption. It has an excellent common-mode rejection ratio (CMRR) that is suitable for AC measurements, and can achieve very low levels of noise, allowing it to be used in very sensitive applications.

Conclusion

AD8221TRMZ-EP-R7 is a single-channel instrumentation amplifier from Analog Devices designed to provide low-noise, low-power performance in portable, battery powered applications. It is packaged in a 6-pin SC70 package which allows it to be space-saving and cost-effective. This part has a wide -40°C to +85°C operational temperature range, and offers very low power dissipation, lower input bias current, low offset voltage, and high gain accuracy, making it suitable for a wide range of applications. Thus, it is an ideal choice for portable, battery powered instrumentation applications.

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