OPA2277U/2K5

The OPA2277U/2K5 is a precision operational amplifier (op-amp) manufactured by Texas Instruments. It is designed for high-performance applications requiring low noise, low offset voltage, and high precision. Here’s a detailed description of its key features and specifications:

General Characteristics:

• Type: Precision Operational Amplifier
• Package: The OPA2277U/2K5 is typically available in a surface-mount package, specifically the SOIC-8 (Small Outline Integrated Circuit) package, which is compact and suitable for space-constrained applications.

Electrical Specifications:

• Supply Voltage: The op-amp can operate with a dual supply voltage ranging from ±2.5V to ±18V, making it versatile for various applications.
• Input Offset Voltage: The OPA2277U boasts a very low input offset voltage, typically around 50 µV, which is crucial for precision applications where small signal variations need to be accurately amplified.
• Input Bias Current: The input bias current is low, typically around 10 pA, which minimizes the impact on the circuit being measured or amplified.
• Common-Mode Rejection Ratio (CMRR): The CMRR is high, typically around 120 dB, ensuring that the op-amp can effectively reject common-mode signals, which is essential in differential signal applications.
• Power Supply Rejection Ratio (PSRR): The PSRR is also high, typically around 120 dB, indicating that the op-amp maintains stable performance despite variations in the supply voltage.

Performance Characteristics:

• Gain Bandwidth Product: The OPA2277U has a gain bandwidth product of approximately 8 MHz, allowing it to handle a wide range of frequencies while maintaining stability.
• Slew Rate: The slew rate is around 0.5 V/µs, which is adequate for many applications, though it may limit performance in very high-speed applications.
• Output Drive Capability: The op-amp can drive loads of up to 600 Ω, making it suitable for a variety of output configurations.

Applications:

The OPA2277U/2K5 is ideal for applications such as:

• Precision instrumentation
• Data acquisition systems
• Medical instrumentation
• High-resolution analog-to-digital converters (ADCs)
• Signal conditioning circuits

Thermal Characteristics:

• Operating Temperature Range: The device is rated for a wide operating temperature range, typically from -40°C to +85°C, making it suitable for industrial and automotive applications.

Additional Features:

• Low Noise: The OPA2277U is designed to minimize noise, making it suitable for sensitive applications where signal integrity is paramount.
• Rail-to-Rail Output: The output stage is designed to provide rail-to-rail performance, allowing the output voltage to swing close to the supply rails, which maximizes dynamic range.

Conclusion:

The OPA2277U/2K5 from Texas Instruments is a high-precision operational amplifier that combines low noise, low offset voltage, and high stability, making it an excellent choice for demanding analog applications. Its robust performance characteristics and versatility make it a popular choice among engineers and designers in various fields.