LT1228IS8#PBF

Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

The LT1228IS8#PBF is a precision monolithic operational amplifier designed specifically for use in demanding and critical instrumentation, OP amps, and buffer amp applications. The LT1228IS8#PBF is specifically designed for low-noise and low-power operation, and includes on-chip voltage feedback and gain-setting resistors. With its highly-stable, guaranteed high CMRR and excellent dynamic performance, it is ideally suited for low-power and high-precision applications such as test and instrumentation, A/D converter level-shift circuits, precision current sources, and laboratory instrumentation.

Functions and features

The LT1228IS8#PBF includes a wide range of features, including:

• High CMRR performance: >100dB over temperature and PSRR (Power Supply Rejection Ratio) of >100dB for 5V supplies.
• Power Consumption: Less than 5 mW at specified conditions.
• Low Noise: Typical 1 µV/VHz at 0.1kHz, making it ideal for high-precision applications.
• Low Distortion: Exceptional THD performance, making it suitable for high-precision audio applications.
• Wide Bandwidth: 5MHz for ±5V supplies.
• High Slew Rate: 2V/µs.
• Small Package: Packaging options include 8-pin SOIC and 4-pin SOT-23 packages.

Applications

The LT1228IS8#PBF is ideal for applications in test and instrumentation, A/D converter level-shift circuits, precision current sources, laboratory instrumentation and general-purpose audio and video applications. TheLT1228IS8#PBF is also suitable for low-power, low-voltage applications such as battery-powered systems. The device is designed to operate from ±3.3V to ±5V supplies and accepts a wide variety of input and output signals.

Working Principle

The LT1228IS8#PBF has been designed to ensure maximum performance for industry-leading measurement accuracy and reliability. The dual-mode input stage is highly configurable, allowing the user to select either a single-ended or differential-mode input. It is designed to have a low input bias current (<1pA at 25ºC), low input offset voltage (<3mV) and excellent noise rejection. The device features low-noise, low-power operation courtesy of its extended-bandwidth buffer stage circuitry and feedback configuration, which provides excellent CMRR, PSRR and dynamic response. The end result is a robust, reliable and low-noise amplifier solution.

Conclusion

The LT1228IS8#PBF is an ideal choice for precision instrumentation and control systems. With its highly-stable CMRR, excellent dynamic performance and low noise operation, it is ideal for applications in test and instrumentation, A/D converter level-shift circuits, precision current sources, and laboratory instrumentation. The device is also suitable for low-power and low-voltage applications, such as battery-powered systems.