INA168NA/250

The INA168NA/250 is a precision instrumentation amplifier manufactured by Texas Instruments. It is designed for applications requiring high accuracy and low noise, making it suitable for sensor signal conditioning, medical instrumentation, and industrial process control.

Key Features:

1. Architecture: The INA168 is a three-op-amp instrumentation amplifier, which provides high input impedance and excellent common-mode rejection. This architecture minimizes the loading effect on the input signal source.

2. Gain Configuration: The gain of the INA168 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 various signal levels.

3. Input Voltage Range: The device supports a wide input voltage range, allowing it to handle signals that may be near the power supply rails. This is particularly useful in battery-operated devices and systems with limited voltage headroom.

4. Low Noise: The INA168 features low input voltage noise, which is critical for applications where signal integrity is paramount. This low noise performance helps in achieving high signal-to-noise ratios.

5. Supply Voltage: The amplifier operates on a dual supply voltage, typically ranging from ±2.5V to ±18V, providing flexibility in design and compatibility with various power supply configurations.

6. Output Drive Capability: The INA168 can drive loads with a low output impedance, making it suitable for interfacing with ADCs and other downstream circuitry without significant signal degradation.

7. Temperature Range: The device is rated for operation over an extended temperature range, making it suitable for industrial applications where environmental conditions can vary.

8. Package Options: The INA168NA/250 is available in a standard 8-pin SOIC package, which is compact and suitable for space-constrained designs.

Applications:

• Medical Devices: Used in ECG, EEG, and other medical monitoring equipment where precision and low noise are critical.
• Industrial Sensors: Ideal for interfacing with various sensors, including thermocouples and strain gauges.
• Data Acquisition Systems: Suitable for high-accuracy data acquisition systems that require precise signal amplification.

Conclusion:

The INA168NA/250 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 excellent choice for engineers looking to amplify small differential signals in a variety of demanding environments.