INA2128U/1K

Product Overview

Category

The INA2128U/1K belongs to the category of integrated circuits (ICs) specifically designed for precision instrumentation amplifiers.

Use

This product is commonly used in applications that require accurate amplification of small differential signals, such as in medical equipment, industrial automation, and scientific research.

Characteristics

• High precision: The INA2128U/1K offers exceptional accuracy in amplifying differential signals, ensuring reliable measurement and data acquisition.
• Low noise: This IC minimizes unwanted noise interference, enabling precise signal amplification even in noisy environments.
• Wide input voltage range: The INA2128U/1K can handle a wide range of input voltages, making it versatile for various applications.
• Low power consumption: This product is designed to operate efficiently with low power consumption, making it suitable for battery-powered devices.
• Temperature stability: The INA2128U/1K exhibits excellent temperature stability, ensuring consistent performance across different operating conditions.

Package and Quantity

The INA2128U/1K is available in a compact surface-mount package. Each package contains one unit of the IC.

Specifications

• Supply Voltage Range: 2.7V to 36V
• Input Offset Voltage: ±150µV (maximum)
• Gain Bandwidth Product: 1MHz
• Common Mode Rejection Ratio: 120dB (minimum)
• Operating Temperature Range: -40°C to +125°C

Pin Configuration

The INA2128U/1K has a total of eight pins, which are assigned specific functions:

1. V+
2. V-
3. REF
4. IN-
5. IN+
6. OUT
7. RG
8. GND

Functional Features

• Differential Amplification: The INA2128U/1K amplifies the difference between the IN+ and IN- inputs, allowing precise measurement of small differential signals.
• High Common Mode Rejection Ratio (CMRR): This IC suppresses common-mode noise, ensuring accurate amplification of the desired signal while rejecting unwanted noise.
• Adjustable Gain: The gain of the amplifier can be adjusted by selecting appropriate external resistors connected to the RG pin.
• Low Power Consumption: The INA2128U/1K operates efficiently with low power consumption, making it suitable for battery-powered applications.

Advantages and Disadvantages

Advantages

• High precision amplification
• Low noise performance
• Wide input voltage range
• Temperature stability
• Compact package size

Disadvantages

• Limited gain bandwidth product compared to some other instrumentation amplifiers
• Requires external resistors for gain adjustment

Working Principles

The INA2128U/1K utilizes a combination of operational amplifier circuits and precision resistors to achieve accurate differential signal amplification. It employs a feedback mechanism to maintain precise gain and reject common-mode noise.

Detailed Application Field Plans

The INA2128U/1K is widely used in various fields, including: - Medical equipment: ECG monitors, blood pressure monitors - Industrial automation: Process control systems, data acquisition systems - Scientific research: Precision measurement instruments, laboratory equipment

Alternative Models

For those seeking alternative options, the following models offer similar functionality: - INA2134U/1K - AD8221ARZ - MCP6N11-010E/SN

These alternatives provide comparable performance and can be considered based on specific application requirements.

In conclusion, the INA2128U/1K is a precision instrumentation amplifier that offers high accuracy, low noise, and wide input voltage range. Its compact package and temperature stability make it suitable for various applications in medical, industrial, and scientific fields. While it has some limitations, alternative models are available to meet specific needs.