Overview
The INA129U/2K5 from Texas Instruments is a low-power, general-purpose instrumentation amplifier. It features a versatile three op amp design and a compact size, making it an excellent choice for a wide range of applications. The amplifier offers excellent accuracy and is suitable for various industrial, medical, and automotive uses due to its high performance and reliability.
Key Specifications
| Parameter | Value |
|---|---|
| Package | 8-pin SOIC (D), 8-pin plastic DIP |
| Operating Temperature Range (°C) | –40°C to +85°C |
| Offset Voltage | 50 µV, maximum |
| Drift | 0.5 µV/°C, maximum |
| Input Bias Current | 5 nA, maximum |
| Noise | 8 nV/√Hz, 0.2 µVpp |
| Common Mode Rejection Ratio (CMRR) | 120 dB, minimum |
| Bandwidth | 1.3 MHz (G = 1) |
| Input Protection | ±40 V |
| Supply Range | ±2.25 V to ±18 V |
| Quiescent Current | 700 µA |
Key Features
- Low offset voltage: 50 µV, maximum
- Low drift: 0.5 µV/°C, maximum
- Low input bias current: 5 nA, maximum
- Low noise: 8 nV/√Hz, 0.2 µVpp
- High CMRR: 120 dB, minimum
- Bandwidth: 1.3 MHz (G = 1)
- Inputs protected to ±40 V
- Wide supply range: ±2.25 V to ±18 V
- Low quiescent current: 700 µA
- Current-feedback input circuitry for wide bandwidth even at high gain
- A single external resistor sets any gain from 1 to 10,000
Applications
The INA129U/2K5 is suitable for a wide range of applications, including industrial automation, medical devices, automotive systems, and any scenario requiring precise signal amplification. Its high accuracy, low noise, and wide bandwidth make it particularly useful in data acquisition systems, sensor interfaces, and other precision measurement applications.
Q & A
- What is the maximum offset voltage of the INA129U/2K5?
The maximum offset voltage is 50 µV. - What is the drift specification of the INA129U/2K5?
The drift is 0.5 µV/°C, maximum. - What is the input bias current of the INA129U/2K5?
The input bias current is 5 nA, maximum. - What is the noise specification of the INA129U/2K5?
The noise is 8 nV/√Hz, 0.2 µVpp. - What is the common mode rejection ratio (CMRR) of the INA129U/2K5?
The CMRR is 120 dB, minimum. - What is the bandwidth of the INA129U/2K5 at a gain of 1?
The bandwidth is 1.3 MHz at a gain of 1. - How are the inputs of the INA129U/2K5 protected?
The inputs are protected to ±40 V. - What is the supply voltage range of the INA129U/2K5?
The supply voltage range is ±2.25 V to ±18 V. - What is the quiescent current of the INA129U/2K5?
The quiescent current is 700 µA. - How is the gain of the INA129U/2K5 set?
A single external resistor sets any gain from 1 to 10,000.
