OPA340NA/3KG4

The OPA340NA/3KG4 is a precision operational amplifier (op-amp) manufactured by Texas Instruments. It is designed for a variety of applications, including signal conditioning, data acquisition, and active filtering. Here’s a detailed description of its key features and specifications:

General Characteristics:

• Type: Precision Operational Amplifier
• Package: The OPA340 is typically available in an 8-pin SOIC (Small Outline Integrated Circuit) package, which is compact and suitable for surface-mount applications.
• Temperature Range: The device operates over a wide temperature range, typically from -40°C to +125°C, making it suitable for industrial and automotive applications.

Electrical Specifications:

• Supply Voltage: The OPA340 can operate with a single supply voltage ranging from 2.7V to 5.5V, or dual supply voltages of ±1.35V to ±2.75V.
• Input Offset Voltage: It features a low input offset voltage, typically around 0.5 mV, which enhances its precision in applications requiring accurate signal amplification.
• Input Bias Current: The input bias current is low, typically around 10 pA, which minimizes the loading effect on the input signal source.
• Gain Bandwidth Product: The gain bandwidth product is approximately 1 MHz, allowing for sufficient bandwidth in many applications.
• Slew Rate: The slew rate is about 0.1 V/µs, which is adequate for many low-frequency applications.

Performance Features:

• Low Noise: The OPA340 is designed to provide low noise performance, making it suitable for sensitive applications such as audio processing and instrumentation.
• Rail-to-Rail Output: The output stage is designed to be rail-to-rail, allowing the output voltage to swing very close to the supply rails, maximizing the dynamic range of the output signal.
• Common-Mode Rejection Ratio (CMRR): The CMRR is high, typically around 100 dB, ensuring that variations in the common-mode voltage do not significantly affect the output.

Applications:

The OPA340 is ideal for a variety of applications, including:

• Signal conditioning in sensor applications
• Active filters in audio and communication systems
• Data acquisition systems
• Medical instrumentation
• Battery-powered devices due to its low power consumption

Power Consumption:

• The OPA340 is designed for low power consumption, typically drawing around 100 µA of supply current, which is beneficial for battery-operated devices.

Conclusion:

The OPA340NA/3KG4 from Texas Instruments is a versatile and high-performance operational amplifier that combines precision, low power consumption, and a wide operating range. Its features make it suitable for a broad spectrum of applications, particularly where accuracy and reliability are paramount.