INA2128 DUAL LOW-POWER INSTRUMENTATION AMPLIFIER

The INA2128 is a dual-channel, high-performance instrumentation amplifier offering excellent accuracy and low power consumption. It is designed for precise differential signal amplification with high input impedance and a wide gain range, making it suitable for various applications like medical instrumentation, data acquisition, and sensor signal conditioning.

Key Features of INA2128 Dual Instrumentation Amplifier:

• • Dual Amplifiers: Contains two independent instrumentation amplifiers in a single package, providing a compact and cost-effective solution for multi-channel applications.
  • High Accuracy: Offers low offset voltage (±50 μV typical) and low offset drift (±0.5 μV/°C), ensuring precise signal amplification.
  • Low Power Consumption: Operates with low power requirements, making it ideal for battery-powered and low-power designs.
  • Wide Gain Range: Gain is set with a single external resistor, allowing for flexible gain settings from 1 to 10,000.
  • High Input Impedance: Provides high input impedance with very low bias currents, making it suitable for high-impedance sources.
  • Wide Supply Range: Operates from a single supply voltage of +2.7V to +36V, or dual supplies of ±1.35V to ±18V.
  • Low Noise: Features low noise characteristics (8 nV/√Hz typical at 1kHz), suitable for precision measurements.

Technical Specifications of INA2128 Dual Instrumentation Amplifier:

• • Model: INA2128
  • Operating Voltage: +2.7V to +36V (single supply) or ±1.35V to ±18V (dual supply)
  • Input Offset Voltage: ±50 μV (typical)
  • Input Bias Current: 5 nA (typical)
  • Gain Range: 1 to 10,000 (adjustable via external resistor)
  • Bandwidth: 200 kHz (at gain = 1)
  • Input Impedance: 10^10 Ω (high impedance)
  • Package: SO-16 or PDIP-16
  • Operating Temperature Range: -40°C to 85°C

Mechanical Specifications of INA2128 Dual Instrumentation Amplifier:

• • Package Type: SO-16 or PDIP-16
  • Pin Count: 16 pins
  • Mounting Style: Surface-mount (SO-16) or through-hole (PDIP-16)
  • Dimensions: 10.3 mm x 7.5 mm (SO-16) or 19.3 mm x 6.4 mm (PDIP-16)

Schematic Diagram, Connection, Wiring, and Pinout of INA2128 Dual Instrumentation Amplifier:

• • Pin Configuration:
  • 1: Ref1 – Reference voltage input for amplifier 1.
  • 2: RG1 – Gain setting resistor terminal for amplifier 1.
  • 3: V₊ – Positive power supply.
  • 4: IN1+ – Non-inverting input for amplifier 1.
  • 5: IN1- – Inverting input for amplifier 1.
  • 6: OUT1 – Output of amplifier 1.
  • 7: Ref2 – Reference voltage input for amplifier 2.
  • 8: RG2 – Gain setting resistor terminal for amplifier 2.
  • 9: V- – Negative power supply or ground.
  • 10: IN2+ – Non-inverting input for amplifier 2.
  • 11: IN2- – Inverting input for amplifier 2.
  • 12: OUT2 – Output of amplifier 2.
  • Basic Wiring: Connect the positive and negative inputs (IN+ and IN-) of each amplifier to the differential signal source. The output is connected to the subsequent signal processing stage. Gain is set by an external resistor between RG1 and RG2.

Applications of INA2128 Dual Instrumentation Amplifier:

• • Medical Instrumentation: Ideal for amplifying small bio-signals in ECG, EEG, and EMG applications.
  • Data Acquisition Systems: Used in ADC front-ends for precise signal conditioning.
  • Sensor Signal Conditioning: Suitable for amplifying signals from various sensors, including strain gauges, thermocouples, and pressure sensors.
  • Industrial Process Control: Amplifies differential signals in control systems for monitoring and regulation.
  • Weighing Systems: Used in load cell signal amplification for weighing scales and systems.

Equivalent of INA2128 Dual Instrumentation Amplifier:

• • INA114: A single-channel instrumentation amplifier with similar features.
  • INA118: A single-channel low-power instrumentation amplifier with comparable performance.

Keywords for INA2128 Dual Instrumentation Amplifier:

• • INA2128
  • Instrumentation Amplifier
  • Dual Amplifier
  • Low Power
  • High Accuracy

Package Includes:

• • 1 x INA2128 Dual Low-Power Instrumentation Amplifier