Overview
The INA114BU is a precision instrumentation amplifier manufactured by Texas Instruments, designed for applications requiring high accuracy and low noise. This model is part of the INA114 series, known for its versatility and compact design. It is particularly suitable for amplifying small differential signals in the presence of large common-mode voltages, making it ideal for industrial, medical, and scientific instrumentation.
Key Specifications
| Parameter | Value | Unit | Notes |
|---|---|---|---|
| Offset Voltage | 150 | µV | Max |
| Bandwidth | 1 | MHz | |
| Gain Range | 1 to 10,000 | V/V | Set by external resistor |
| Common-Mode Rejection Ratio (CMRR) | 115 | dB | Min at G = 1000 |
| Supply Voltage | ±2.25 to ±18 | V | |
| Quiescent Current | 3 | mA | Max |
| Operating Temperature | -40 to 85 | °C | |
| Package | PDSO16 | Surface Mount |
Key Features
- High accuracy with low offset voltage and drift
- Wide gain range adjustable by a single external resistor
- High common-mode rejection ratio for noise reduction
- Input protection against overvoltage up to ±40V
- Low quiescent current suitable for battery-powered applications
Applications
The INA114BU is widely used in various fields such as industrial automation for sensor signal amplification, medical devices for bio-signal processing, and scientific instruments for precise measurement tasks. Its ability to handle large common-mode voltages and provide high gain accuracy makes it a preferred choice in environments where signal integrity is critical.
Q & A
What is the gain range of the INA114BU?
The gain range of the INA114BU is from 1 to 10,000 V/V, which can be set using an external resistor.
How does the INA114BU handle common-mode voltages?
The INA114BU features a high common-mode rejection ratio (CMRR) of 115 dB at a gain of 1000, effectively minimizing the impact of common-mode voltages.
Can the INA114BU be used in battery-powered devices?
Yes, the INA114BU's low quiescent current of up to 3 mA makes it suitable for battery-powered applications.
What is the operating temperature range of the INA114BU?
The INA114BU operates within a temperature range of -40°C to 85°C.
What package does the INA114BU come in?
The INA114BU is available in a PDSO16 surface mount package.
What is the maximum offset voltage of the INA114BU?
The maximum offset voltage of the INA114BU is 150 µV.
How is the gain of the INA114BU set?
The gain of the INA114BU is set by an external resistor connected to the amplifier.
What is the bandwidth of the INA114BU?
The bandwidth of the INA114BU is 1 MHz.
Is the INA114BU suitable for medical applications?
Yes, the INA114BU is suitable for medical applications, particularly in bio-signal amplification due to its high accuracy and low noise.
What is the supply voltage range for the INA114BU?
The supply voltage range for the INA114BU is from ±2.25 V to ±18 V.
