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INA128UA

Name: INA128UA
Rating: 4.7 (12 reviews)

IC INST AMP 1 CIRCUIT 8SOIC

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Mfr。パート #INA128UA
パッケージ SOIC (D)-8
データシート
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仕様

Package	Tube
ProductStatus	Active
AmplifierType	Instrumentation
NumberofCircuits	1
SlewRate	4V/µs
-3dbBandwidth	1.3 MHz
Current-InputBias	2 nA
Voltage-InputOffset	25 µV
Current-Supply	700µA
Current-Output/Channel	15 mA
Voltage-SupplySpan(Min)	4.5 V
Voltage-SupplySpan(Max)	36 V
OperatingTemperature	-40°C ~ 125°C
MountingType	Surface Mount
Package/Case	8-SOIC (0.154, 3.90mm Width)

概要

Description

The INA128UA is a precision instrumentation amplifier designed for accurate and low-noise amplification of small differential signals. It features a low offset voltage, high common-mode rejection ratio (CMRR), and low gain drift, making it ideal for applications in medical instrumentation, strain gauge sensors, and data acquisition systems.
Key specifications include a supply voltage range of ±2.5V to ±18V, a typical gain of 100, and excellent linearity. The amplifier can be configured with external resistors to achieve various gain settings. Its low input bias current ensures minimal error in high-impedance signal applications.
The INA128UA is housed in an 8-lead SOIC package, making it suitable for space-constrained environments. With its high performance and versatility, the INA128UA is widely used in industrial, automotive, and consumer electronics applications where precision signal processing is critical.

Features

The INA128UA is an ultra-precision instrumentation amplifier designed for high-performance applications. Key features include:
1. High Accuracy: Offers a typical offset voltage of 50 µV and low offset drift of 0.2 µV/°C.
2. Gain Configuration: Provides adjustable gain from 1 to 1000, set with a single external resistor.
3. Low Noise: Low input voltage noise of 100 nV/√Hz at 1 kHz ensures high accuracy in low-level signal amplification.
4. Wide Supply Voltage: Operates on a dual supply voltage range of ±2.5V to ±18V, allowing flexibility in various applications.
5. High Common-Mode Rejection Ratio (CMRR): Typical CMRR of 130 dB enhances performance in noisy environments.
6. Low Power Consumption: Consumes only 1.2 mA of supply current, making it suitable for battery-operated devices.
7. Input Impedance: High input impedance (10 MΩ) minimizes loading on the source.
These features make the INA128UA ideal for medical instrumentation, data acquisition, and other precision measurement applications.

Package

The INA128UA is available in a dual in-line package (DIP) with a 8-pin configuration. It is designed for precision instrumentation and signal conditioning applications, providing a high level of accuracy and low noise performance.

Pinout

The INA128UA is a precision instrumentation amplifier with an 8-pin dual in-line package (DIP).
### Pin Count and Functions:
1. Pin 1 (R_G): Gain setting resistor connection.
2. Pin 2 (V-): Negative power supply input.
3. Pin 3 (Vout): Output voltage.
4. Pin 4 (Non-inverting Input, +): Positive input for the differential signal.
5. Pin 5 (Inverting Input, -): Negative input for the differential signal.
6. Pin 6 (V+): Positive power supply input.
7. Pin 7 (NC): No connection (not used).
8. Pin 8 (NC): No connection (not used).
This configuration allows the INA128UA to amplify small differential signals while rejecting common-mode noise, making it suitable for various applications such as sensor signal conditioning. The gain can be set using an external resistor connected to pin 1.

Manufacturer

The INA128UA is manufactured by Texas Instruments (TI), a leading global technology company. Texas Instruments is known for designing and producing a wide range of analog and digital semiconductors, as well as embedded processors. The company focuses on developing innovative solutions for various applications, including automotive, industrial, communications, and consumer electronics. Founded in 1930, TI has established itself as a major player in the semiconductor industry, emphasizing research and development to drive advancements in technology. The INA128UA itself is a precision instrumentation amplifier, widely used in various electronic circuits for applications that require accurate signal amplification.

Application

The INA128UA is a precision instrumentation amplifier commonly used in medical instrumentation, such as biopotential measurements (ECG, EEG), sensor signal conditioning (strain gauges, thermocouples), and data acquisition systems. Its high input impedance, low noise, and ability to amplify low-level signals make it ideal for applications requiring accurate and reliable signal processing in industrial, automotive, and consumer electronics as well.

Equivalent

Equivalent products to the INA128UA instrumentation amplifier include the INA126, INA137, and AD620. Other options are the LT1167 and the MCP6004 for general applications. While these alternatives share similar functionalities, it's essential to compare specifications like gain bandwidth, input offset voltage, and supply voltage to ensure compatibility with your specific application.