INA121UA/2K5

The INA121UA/2K5 is a precision, low power instrumentation amplifier with a gain range of 1 to 10000. It features low offset voltage, low quiescent current, and low total harmonic distortion, making it suitable for a wide range of precision measurement and sensor signal conditioning applications.

Pinout

(Note: The pin configuration below is a general representation. Refer to the specific datasheet for precise details.)

• RG: Gain setting resistor
• V+: Positive supply voltage
• V-: Negative supply voltage
• OUTPUT: Amplifier output
• -IN: Inverting input
• +IN: Non-inverting input
• REF: Reference voltage
• NC: No connection

Circuit Diagram

Include a circuit diagram illustrating the connections and operation of the INA121UA/2K5 for a visual representation.

Key Features

• Wide Gain Range: The INA121UA/2K5 offers a configurable gain range from 1 to 10000, providing flexibility for various signal amplification requirements.
• Precision Performance: With low offset voltage and low total harmonic distortion, this instrumentation amplifier ensures accurate signal amplification and measurement.
• Low Quiescent Current: The low power consumption makes it suitable for battery-powered and portable applications.
• High Common-Mode Rejection Ratio (CMRR): Ensures effective rejection of common-mode noise for precise signal conditioning.
• Wide Supply Voltage Range: Operates effectively within a wide supply voltage range, enhancing its compatibility with different systems.
• Small Footprint: Available in a compact integrated circuit package, saving board space in design implementations.

Note: For detailed technical specifications, please refer to the INA121UA/2K5 datasheet.

Application

• Strain Gauge Signal Conditioning: Ideal for conditioning and amplifying signals from strain gauge sensors for force and pressure measurements.
• Temperature Measurement: Suitable for precision temperature measurement applications requiring high accuracy and stability.
• Biomedical Instrumentation: Used in medical devices and instruments for amplifying and processing biological signals with precision.

Functionality

The INA121UA/2K5 is a precision instrumentation amplifier designed to accurately amplify small signals from sensors and transducers. It provides high gain with low noise and distortion, making it suitable for demanding measurement applications.

Usage Guide

• Power Supply: Connect V+ (Pin 2) to the positive supply voltage and V- (Pin 3) to the negative supply voltage.
• Signal Connections: Connect the input signals to the +IN (Pin 5) and -IN (Pin 6) terminals for proper signal amplification.
• Gain Configuration: Use an external gain setting resistor (RG) connected to the RG pin to configure the desired gain.

Frequently Asked Questions

Q: What is the typical gain range used for sensor signal conditioning with the INA121UA/2K5?
A: The typical gain range varies based on the sensor output, but it can be configured from 1 to 10000 to suit different sensor signal amplitudes.

Q: Can the INA121UA/2K5 operate with a single power supply?
A: Yes, the INA121UA/2K5 can operate with a single supply voltage, simplifying its integration in various systems.