INA327EA/250G4

Product Overview

Category

The INA327EA/250G4 belongs to the category of integrated circuits (ICs) specifically designed for instrumentation amplifiers.

Use

This product is commonly used in applications that require precise and accurate amplification of small signals, such as in medical devices, industrial automation, and scientific instruments.

Characteristics

• High precision: The INA327EA/250G4 offers high accuracy and low offset voltage, ensuring reliable signal amplification.
• Low noise: It features a low noise figure, enabling clear signal amplification without introducing additional interference.
• Wide bandwidth: With a wide frequency response range, this amplifier can handle signals across various frequencies.
• High common-mode rejection ratio (CMRR): The CMRR ensures effective rejection of common-mode noise, enhancing the quality of amplified signals.

Package

The INA327EA/250G4 comes in a small outline package (SOIC) with 8 pins. This package provides ease of integration into circuit boards and facilitates efficient heat dissipation.

Essence

The essence of the INA327EA/250G4 lies in its ability to accurately amplify weak signals while minimizing noise and maintaining signal integrity.

Packaging/Quantity

This product is typically available in reels or tubes containing a specified quantity of ICs, usually ranging from hundreds to thousands per package.

Specifications

• Supply voltage: 2.7V to 36V
• Input offset voltage: ±150µV (maximum)
• Gain bandwidth product: 1MHz
• Common-mode rejection ratio: 120dB (typical)
• Operating temperature range: -40°C to +125°C

Detailed Pin Configuration

The INA327EA/250G4 has the following pin configuration:

1. V+ (Positive supply voltage)
2. V- (Negative supply voltage)
3. REF (Reference voltage)
4. IN- (Inverting input)
5. IN+ (Non-inverting input)
6. OUT (Output)
7. NC (No connection)
8. NC (No connection)

Functional Features

• Differential input: The INA327EA/250G4 amplifies the difference between the non-inverting and inverting inputs, allowing for precise measurement of small signals.
• High gain: It provides a high gain factor to amplify weak signals to a usable level.
• Low power consumption: This amplifier operates with low power consumption, making it suitable for battery-powered applications.
• Overload protection: The INA327EA/250G4 incorporates built-in protection mechanisms to prevent damage from excessive input voltages.

Advantages and Disadvantages

Advantages

• High precision amplification
• Low noise figure
• Wide bandwidth
• Excellent common-mode rejection ratio
• Compact package size

Disadvantages

• Limited gain bandwidth product compared to some other instrumentation amplifiers
• Higher cost compared to general-purpose operational amplifiers

Working Principles

The INA327EA/250G4 utilizes a combination of operational amplifier circuits and precision resistors to amplify differential input signals. It employs a feedback mechanism to maintain accurate amplification while rejecting common-mode noise. By carefully controlling the gain and offset, this amplifier ensures reliable and precise signal amplification.

Detailed Application Field Plans

The INA327EA/250G4 finds extensive use in various fields, including:

1. Medical devices: ECG monitors, blood pressure monitors, and patient monitoring systems.
2. Industrial automation: Process control systems, data acquisition systems, and robotics.
3. Scientific instruments: Oscilloscopes, spectrum analyzers, and laboratory equipment.
4. Automotive electronics: Engine control units, fuel injection systems, and sensor interfaces.

Detailed and Complete Alternative Models

1. INA128P: Similar functionality with a lower gain bandwidth product.
2. AD8221ARZ: Offers higher precision and lower noise figure.
3. MCP6N11-010E/SN: Lower cost alternative with comparable performance.

These alternative models provide similar functionality to the INA327EA/250G4, catering to different application requirements and budget constraints.

In conclusion, the INA327EA/250G4 is a highly precise and reliable instrumentation amplifier suitable for various applications that demand accurate signal amplification. Its compact size, low noise, and wide bandwidth make it an ideal choice for professionals in the medical, industrial, scientific, and automotive fields.