OPA683IDG4

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The OPA683IDG4 is a high-performance operational amplifier. This device is an ideal choice for designers that require the highest levels of accuracy and stability for precision-control applications. It is suitable for instrumentation, linear and buffer amplifier applications. In this article, we will discuss the application field, performance and working principle of the OPA683IDG4.

Applications

The OPA683IDG4 is designed for a wide range of instrumentation and buffer amplifier applications such as:

• Low noise, high accuracy differential amplifier circuits
• Signal conditioning circuits
• Data convertors
• Industrial control systems and analog circuit applications
• High current driver circuits and low impedance transimpedance amplifier circuits

Performance

The OPA683IDG4 features low noise, high precision and stability. It features an excellent common mode rejection ratio (CMRR) of -80 dB at a gain of 1 V/V, and a low offset drift of 0.016 μV/°C. It has a maximum power supply of + 16V and a single supply operation down to 4.5V. Its total current consumption is only 8 mA.

Working Principle

The OPA683IDG4 is a monolithic integrated circuit (CMOS) implemented with an OP-amp, resistors, capacitors and signal conditioning components. Like other OP-amps, it consists of three main components: an amplifier, an input stage, and an output stage.

In the input stage, the OPA683IDG4 uses a differential amplifier circuit, combining N-type and P-type MOSFET transistors to amplify the input signal. The signal is then transferred through a number of high-gain resistor and capacitor combinations.

The amplifier stage consists of an N-type MOSFET and capacitor which act together to manipulate the gain of the amplifier circuit. The gain of the circuit is determined by the size of the MOSFET, the value of the capacitor and the resistance of the resistor.

In the output stage, the signal is amplified and then sent to the positive and negative output terminals. The signal is protected by the feedback resistor which can be adjusted to maintain a stable output signal.

Conclusion

The OPA683IDG4 is an excellent choice for instrumentation, linear and buffer amplifier applications. It features low noise and high precision, high stability and low offset drift, and can be operated on a single power supply. Its unique amplifier design achieves high gain while consuming low power.

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