ISL55290IUZ

The ISL55290IUZ is a high performance, low-noise, current-feedback instrumentation amplifiers for precise signal conditioning. This instrumentation amplifier is ideal for medical, process control, industrial, and scientific applications. It has a wide gain bandwidth of up to 30MHz while operating from a single supply voltage of 2.7V to 8.5V.

Features

• Wide gain bandwidth:30MHz
• Low input noise: 4nV/Hz
• High output current: 300mA
• High slew rate: 350V/μs
• Low distortion: 0.002%
• Low input offset voltage: 15mV
• Operating temperature range: -40°C to +125°C

Application Field and Working Principle

The ISL55290IUZ is suitable for a variety of applications, such as medical and process control, industrial sensing, and scientific measurements. Its wide gain bandwidth and high slew rate make it ideal for high speed or high frequency measurements or application requiring precision and accuracy. This instrumental amplifier can also be used to isolate input and output signals. The instrumentation amplifier uses a transconductance approach to produce a low noise, distortion-free output.

The principle of operation of the instrumentation amplifier is based on the linear combination of two amplifier stages that are connected in series. The two stages provide the high gain, and the feedback resistor network sets the differential input resistance. The output stage is connected to the common mode input, which helps control and minimize the common mode voltage. The feedback network also helps to provide high common mode and input offset voltage rejection.

The amplifier stages are configured as a current-feedback amplifier. This configuration allows for high gain and wide bandwidth, as well as high slew rate, low noise, and low distortion. The current-feedback amplifier includes an input stage with error-correction circuitry and an output stage with gain-boosting circuitry. The current-feedback structure provides an exact voltage output that is proportional to the input current.

The ISL55290IUZ is optimized for applications requiring low noise and high accuracy. The device provides a wide common mode input range and a wide output voltage swing that is independent of the supply voltage. This makes the amplifier suitable for applications such as strain gauge and bridge measurement signals, as well as high impedance sensing applications.

Conclusion

The ISL55290IUZ is a high performance, low-noise and current-feedback instrumentation amplifier that is ideal for a variety of medical, industrial, process control, and scientific applications. With its wide gain bandwidth, high slew rate and low distortion, the device can handle high speed and high frequency measurements. The amplifier is also well-suited for low-noise, isolated input and output signals with high common mode and input offset voltage rejection. In summary, the ISL55290IUZ is perfectly suited for applications requiring precision and accuracy.