INA168NA/250

Product Overview

• Category: Integrated Circuit (IC)
• Use: Instrumentation Amplifier
• Characteristics:
  • High precision and accuracy
  • Low noise and distortion
  • Wide input voltage range
  • High common-mode rejection ratio
• Package: DIP-8 (Dual Inline Package)
• Essence: Amplification of small differential signals with high accuracy
• Packaging/Quantity: Available in reels of 250 units

Specifications

• Supply Voltage: ±2.25V to ±18V
• Input Offset Voltage: ±0.5mV (maximum)
• Input Bias Current: ±1nA (maximum)
• Gain Bandwidth Product: 1MHz (typical)
• Common-Mode Rejection Ratio: 100dB (typical)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The INA168NA/250 IC has a total of 8 pins arranged as follows:

```

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| | --| V+ OUT |-- --| V- REF |-- --| GND IN- |-- --| GND IN+ |-- |___________| ```

Pin Description: - V+: Positive supply voltage - V-: Negative supply voltage - OUT: Output pin - REF: Reference pin - GND: Ground - IN-: Inverting input - IN+: Non-inverting input

Functional Features

• High gain and accuracy amplification of small differential signals
• Excellent rejection of common-mode noise and interference
• Low output impedance for easy interfacing with other circuits
• Wide operating voltage range allows flexibility in power supply selection
• Low power consumption for energy-efficient applications

Advantages and Disadvantages

Advantages: - High precision and accuracy - Low noise and distortion - Wide input voltage range - High common-mode rejection ratio

Disadvantages: - Limited gain bandwidth product compared to some alternative models - Higher cost compared to basic operational amplifiers

Working Principles

The INA168NA/250 is an instrumentation amplifier that amplifies small differential signals with high accuracy. It consists of three operational amplifiers configured in a specific way to provide high gain, high common-mode rejection, and low output impedance. The inverting and non-inverting inputs are used to measure the differential signal, while the reference pin helps reject common-mode noise. The amplified output is then available at the OUT pin.

Detailed Application Field Plans

The INA168NA/250 is widely used in various applications that require accurate amplification of small differential signals. Some common application fields include:

1. Medical Devices: ECG (Electrocardiogram) amplification, EEG (Electroencephalogram) amplification, etc.
2. Industrial Automation: Sensor signal conditioning, strain gauge amplification, etc.
3. Test and Measurement Equipment: Data acquisition systems, precision instrumentation, etc.
4. Audio Systems: Microphone preamplifiers, audio signal processing, etc.

Detailed and Complete Alternative Models

1. AD620: Instrumentation amplifier with similar characteristics and package options.
2. INA114: Precision instrumentation amplifier with higher gain bandwidth product.
3. AD8221: Low power instrumentation amplifier with lower supply voltage requirements.

These alternative models offer similar functionality and can be considered based on specific application requirements.

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