Supply original INA128UA/2K5E4, Linear - Amplifiers - Instrumentation, Operational Amplifiers, Buffer Amplifiers, by Texas Instruments

The INA128UA/2K5E4 is a precision instrumentation amplifier manufactured by Texas Instruments. It is designed for high-performance applications requiring accurate signal amplification, particularly in low-level signal processing. Here’s a detailed description of its features and specifications:

General Overview:

• Type: Instrumentation Amplifier
• Package: The INA128UA comes 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 +85°C, making it suitable for various industrial and commercial applications.

Key Features:

• High Precision: The INA128 offers low offset voltage (typically 50 µV) and low offset drift, ensuring accurate amplification of small signals.
• Gain Configuration: The gain of the amplifier can be set using a single external resistor, allowing for flexibility in applications. The gain can be adjusted from 1 to 1000, making it versatile for different signal levels.
• Low Noise: The amplifier features low input noise, which is crucial for applications involving weak signals, such as sensor outputs.
• High Common-Mode Rejection Ratio (CMRR): The INA128 has a high CMRR, typically around 120 dB, which helps in rejecting noise and interference from common-mode signals.
• Wide Bandwidth: The device has a bandwidth of approximately 1 MHz at a gain of 100, allowing it to handle a variety of signal frequencies effectively.

Electrical Characteristics:

• Supply Voltage: The INA128 can operate on a dual supply voltage ranging from ±2.5V to ±18V, or a single supply from 5V to 36V, providing flexibility in power supply design.
• Input Impedance: The input impedance is very high, typically around 10^9 ohms, which minimizes the loading effect on the signal source.
• Output Drive Capability: The output can drive loads of up to 10 kΩ, making it suitable for interfacing with various downstream circuits.

Applications:

The INA128 is widely used in applications such as:

• Medical instrumentation (e.g., ECG, EEG)
• Data acquisition systems
• Industrial process control
• Strain gauge and pressure sensor signal conditioning
• Thermocouple and RTD temperature measurement

Conclusion:

The INA128UA/2K5E4 from Texas Instruments is a robust and versatile instrumentation amplifier that excels in precision applications. Its combination of high accuracy, low noise, and flexible gain settings makes it an ideal choice for engineers and designers looking to amplify low-level signals in a variety of fields.