INA118UB/2K5

The INA118UB/2K5 is a precision instrumentation amplifier manufactured by Texas Instruments, designed for high-performance applications requiring accurate signal amplification. This device is particularly well-suited for low-level signal processing, such as sensor signal conditioning, medical instrumentation, and data acquisition systems.

Key Features:

1. Architecture: The INA118 is a three-op-amp instrumentation amplifier, which provides high input impedance and excellent common-mode rejection ratio (CMRR). This architecture minimizes the loading effect on the input signal source.

2. Input Voltage Range: The amplifier can handle a wide input voltage range, making it versatile for various applications. It is capable of amplifying small differential signals while rejecting large common-mode voltages.

3. Gain Configuration: The gain of the INA118 can be set using a single external resistor, allowing for a wide range of gain settings from 1 to 1000. This flexibility makes it suitable for different applications where varying levels of amplification are required.

4. Low Noise: The INA118 features low noise characteristics, which is crucial for applications dealing with weak signals. This ensures that the amplified output remains clean and accurate.

5. Power Supply: The device operates on a dual power supply, typically ranging from ±2.5V to ±18V, which provides flexibility in design and integration into various systems.

6. Temperature Range: The INA118 is designed to operate over an extended temperature range, making it suitable for industrial and automotive applications where environmental conditions can vary significantly.

7. Package Options: The INA118UB/2K5 is available in various package types, including the standard 8-pin DIP and surface-mount options, facilitating easy integration into different circuit designs.

8. Applications: Common applications include medical devices (such as ECG and EEG), industrial process controls, strain gauge amplifiers, and any application requiring precise measurement of small differential signals.

Performance Specifications:

• Input Impedance: Very high input impedance (typically in the range of megaohms), which helps in minimizing the loading effect on the signal source.
• Common-Mode Rejection Ratio (CMRR): High CMRR, typically around 100 dB, ensuring that common-mode signals do not affect the output.
• Offset Voltage: Low input offset voltage, which contributes to the accuracy of the amplified signal.
• Bandwidth: Sufficient bandwidth for most applications, allowing for the amplification of signals without significant distortion.

Conclusion:

The INA118UB/2K5 from Texas Instruments is a robust and versatile instrumentation amplifier that excels in precision applications. Its combination of high input impedance, low noise, and flexible gain settings makes it an ideal choice for engineers and designers looking to amplify low-level signals accurately and reliably.