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Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

The ISL28433FBZ-T7A is an integrated amplifier, which is ideal for high precision instrumentation and general purpose current sensing applications, providing circuits with high linearity and reduced stress. This amplifier is based on gain bandwidth product of 7MHz and features low offset voltage and low noise figure. This amplifier can be used in single ended, differential or bidirectional modes, depending on the application.

Application Fields

The ISL28433FBZ-T7A amplifier is intended for a wide range of applications in high precision instrumentation. These include current sensing and power management for HVAC, solar power, and appliances, as well as in low noise audio amplifiers. It can also be used in automotive and other high power industrial settings. For example, it is suitable for driving from a variety of transducers, including strain gauges and pressure sensors. This makes it well suited for the challenging requirements of medical and industrial instrumentation applications.

Working Principle

The ISL28433FBZ-T7A amplifier is a single-ended, low-power, high-precision integrated amplifier based on a P-channel differential amplifier architecture. Its output is a double-ended structure, in which common-mode and differential-mode levels are generated providing outstanding linearity, reducing power dissipation, and allowing it to be used in applications such as current sensing, strain gauges and other transducers, and medical instrumentation. With an input bias current of 250 nA, it is well suited for low power applications.

The amplifier has a common-mode range of -4 V to 6V, an input voltage range of -4 V to 4 V, a differential gain of 0.1 dB, and a CMRR of 99.9 dB. It has low power consumption, low offset voltage, low noise, and low distortion. It operates on supplies as low as 1.2 V and as high as 5.5 V and has a bandwidth of 7 MHz. Other features include a feedback resistor, input capacitance, and a power-on reset.

The amplifier offers excellent linearity and low power consumption, making it suitable for a wide range of applications requiring precision measurements. Its low input bias current makes it a good choice for battery-powered applications. Its P-channel architecture also results in a wide common-mode range, high CMRR, and low power consumption. The ISL28433FBZ-T7A is also protected against electrostatic discharge, making it well suited for use in harsh environments.

Conclusion

The ISL28433FBZ-T7A is a high-precision, low-power integrated amplifier with excellent linearity. It is intended for a wide range of applications, from current sensing to audio amplifiers. Its P-channel architecture offers many advantages over other amplifier architectures, including a wide common-mode range, high CMRR, and low power consumption. It also has excellent electrostatic discharge protection and a wide input voltage range, making it suitable for a variety of applications.

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