OPA2354AIDDAG3

Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

The OPA2354AIDDAG3 is a high performance, integrated circuit low power dual rail-to-rail, high output current instrumentation amplifier with a lumped, fully integrated precision resistor network. It is designed to provide enhanced performance in a wide range of applications, including communications, data acquisition, and instrumentation systems. It provides low noise, wide bandwidth, low input bias current, high common-mode rejection, and high common-mode voltage range operation. It is ideal for use in medical and industrial applications.

Features

The OPA2354AIDDAG3 includes a precision, integrated resistor network which helps to provide accurate gain settings without the need for external components. This resistor network includes a unique resistor matching scheme that permits precise gain settings of less than 2dB. The 2GHz GBW also provides excellent performance in high frequency, wideband applications.

The low input bias current of 100pA and the low power consumption of 480μA/amplifier make the OPA2354AIDDAG3 ideal for low power, low noise applications. The wide power supply range from 2.7V to 5.5V coupled with the low power consumption makes this instrumentation amplifier suitable for battery operated applications. The OPA2354AIDDAG3 also features a wide common-mode voltage range of -0.2 to 6.7V, providing for maximum dynamic range in applications.

Application Field

The OPA2354AIDDAG3 is an ideal component for a wide range of instrumentation and industrial applications such as medical instrumentation, datalogging amplifiers, gas chromatographs, industrial controls, sensor conditioning, and portable power monitoring devices. It is also widely used in instrumentation, precision, and medical crossover designs, providing excellent low voltage performance combined with low input noise and high distortion performance. It is an ideal component for application where high CMRR and low noise are required.

Working Principle

The OPA2354AIDDAG3 features a low noise, dual rail-to-rail input amplifier and a precision integrated resistor network. This amplifier is designed to improve the input noise, reduce the input bias current, and provide excellent performance in applications with varying levels of power and gain requirements. The inputs consist of a positive and negative input, both of which can accept signals up to the full power supply voltage range.

The OPA2354AIDDAG3 also features a differential output stage which provides excellent common-mode rejection and excellent power supply rejection. The output stage is dual rail-to-rail and can source up to 1.8mA of current with a total output swing of 601mVpp (at a 1kHz signal). The overall gain can be adjusted by the integrated resistor network by dividing the device part number with a gain setting (see table in datasheet).

The OPA2354AIDDAG3 also features high common-mode rejection, low input bias current, low power consumption and lower distortion compared with typical instrumentation amplifiers. The wideband gain flatness and low noise emphasis with frequency response are also superior compared to similar devices, making the OPA2354AIDDAG3 ideal for professional audio applications such as recording, mixing and sound design.

Conclusion

The OPA2354AIDDAG3 is a high performance, integrated circuit low power dual rail-to-rail, high output current instrumentation amplifier with a lumped, fully integrated precision resistor network. It is designed to provide enhanced performance in a wide range of applications, and is ideal for use in medical and industrial applications. It provides low noise, wide bandwidth, excellent power supply rejection, low input bias current, high common-mode rejection, and high common-mode voltage range operation, making it an ideal choice for applications where high CMRR and/or low noise are required.