OPA2197IDGKR

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The OPA2197IDGKR is an instrumentation amplifier integrated circuit (IC) used for low-energy and low-noise signal processing, offering excellent common-mode rejection (CMRR) and high-voltage gain. This IC is specifically designed for applications requiring high input impedance, high accuracy, and low offset voltage, making it suitable for use in audio signal conditioning, sound measurement, and active filters. This article provides an overview of the OPA2197IDGKR application field and working principle.

OPA2197IDGKR Application Field

The primary application field for the OPA2197IDGKR is any application requiring low-noise and low-energy signal processing. This IC is specifically designed to handle single or dual-channel signals, providing excellent common-mode rejection (CMRR) and high-voltage gain. The IC is suitable for use in audio signal conditioning, sound measuring, and active filters in a wide variety of applications, such as:

• Consumer electronics
• Medical and research instruments
• Computer and network-based systems
• Automotive audio systems
• Industrial process monitoring

The OPA2197IDGKR is also an ideal choice for applications requiring high input impedance, high accuracy, and low offset voltage, such as digital-to-analog and analog-to-digital converters and audio/video measuring instruments.

OPA2197IDGKR Working Principle

The OPA2197IDGKR is an instrument-level amplifier designed to provide low-noise and low-energy signal conditioning. It features two independent amplifiers, each with its own input, output, and feedback path. The amplifiers use an open-loop gain of 104 dB and a gain bandwidth product of 50 MHz. This allows for a wide bandwidth, low noise operation, and an excellent common-mode rejection ratio (CMRR) of up to 95 dB.

The IC also features an integrated common-mode gain block, providing a gain of up to 50V/V, while keeping the input and output noise levels to a minimum. The differential gain and common-mode rejection of the IC also helps to reduce the problem of input/output offsets within the system. The IC is designed to operate from a supply voltage of 4.5V to 20V and can source up to 200 mA of current. The output slew rate is also adjustable, allowing for fine adjustment of the output level.

Conclusion

The OPA2197IDGKR is a low-noise, low-energy instrumentation amplifier IC designed for a wide range of applications. It provides excellent CMRR, high input impedance, high accuracy, and low offset voltage, making it ideal for audio signal conditioning, sound measurement, and active filters in a variety of applications. The IC can operate from a supply voltage of 4.5V to 20V and can source up to 200 mA of current, making it suitable for a wide range of applications.

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