ISL28107FRTZ-T13

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ISL28107FRTZ-T13 Introduction and Working Principle

ISL28107FRTZ-T13 is an auto-zero amplifier which is designed for both precision and low powerperformance. This auto-zero amplifier is designed in an operational amplifier architecture andoperates from a wide supply voltage range from 2.7 V to 5.5 V and is stable over a wide temperature range. It features low quiescent current, low offset voltage and wide bandwidth, making it suitable for a wide range of applications.

Features:

• Low noise: 7.5nV/ √Hz
• Low distortion: -80dBc
• Wide bandwith: 4MHz
• Low offset voltage: 0.5uV
• High linearity: 98.5dB
• Low quiescent current: ≤2.1mA
• Power Supply Range: 2.7V-5.5V
• Wide temperature range: -40°C~105°C

Application Field:

The ISL28107FRTZ-T13 can be widely used in various applications because of its features, like medical instrument, contactless power supply, energy metering, optical Communications and so on. With excellent flatness, low noise and wide bandwidth, the amplifier can meet the needs in a number of demanding applications, such as high-pressure measurement, security surveillance and digital interface.

Working principle

The ISL28107FRTZ-T13 features auto zero technique for cleaning up low frequency noise and improving linearity. To begin with, during the power-on sequence, the amplifier will start up by drawing current from both positive and negative supplies to activate the auto-zeroing function. Next, a switching circuit is employed to switch the full-scale input to the non-inverting input terminal. The non-inverting input terminal is then auto zero-ed against the inverting input terminal. Once auto-zeroing is completed, the amplifier begins normal operation with the inputs connected to the non-inverting and inverting terminals. During this time, the auto-zero circuit remains active and continuously monitors the input signals for low-frequency noise which is then filtered using the auto-zero circuitry. This enables the amplifier to achieve high linearity performance.

Conclusion:

In conclusion, the ISL28107FRTZ-T13 is an auto-zero amplifier which is designed for both precision and low power performance. It features low noise, low distortion, low offset voltage, and high linearity performance, making it suitable for a wide range of applications, such as medical instrument, contactless power supply, energy metering, and optical Communications.

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