Overview
The INA126P, produced by Texas Instruments, is a precision instrumentation amplifier renowned for its high accuracy, low power consumption, and versatility in various applications. This amplifier is designed to enhance signal clarity and reduce noise, making it a crucial component in precision electronic systems. The INA126P features a dual operational amplifier design, which efficiently consumes only 175µA per channel, making it ideal for portable and battery-powered devices. Its wide supply voltage range from ±1.35V to ±18V and adjustable gain settings from 5V/V to 10,000V/V with a single external resistor further enhance its applicability across different sectors.
Key Specifications
| Specification | Details |
|---|---|
| Low Quiescent Current | 175µA/channel |
| Wide Supply Range | ±1.35V to ±18V |
| Low Offset Voltage | 250µV max |
| Low Offset Drift | 3µV/°C max |
| Low Noise | 35nV/√Hz |
| Low Input Bias Current | 25nA max |
| Package Options | 8-pin DIP, SO-8, MSOP-8, SSOP-16, SO-16 |
| Operating Temperature | –40°C to +85°C |
| Common Mode Rejection Ratio | 83 dB |
| Power Supply Rejection Ratio (PSRR) | 106 dB |
| Bandwidth | 200 kHz |
| Slew Rate | 0.4 V/μs |
| Output Current per Channel | 10 mA |
Key Features
- Low Power Consumption: The INA126P operates with an ultra-low quiescent current of 175µA per channel, making it ideal for battery-powered and portable applications.
- High Accuracy: It features a low offset voltage of 250µV and a low offset drift of 3µV/°C, ensuring accurate measurements even in fluctuating environments.
- Wide Input Voltage Range: The amplifier supports a wide supply voltage range from ±1.35V to ±18V, enhancing its versatility across different applications.
- Adjustable Gain: Gain can be set from 5V/V to 10,000V/V with a single external resistor, providing flexibility in various system configurations.
- Integrated EMI Filtering: The amplifier includes integrated electromagnetic interference (EMI) filtering to minimize noise and interference in electrically noisy environments.
- Multiple Package Options: Available in various packages such as 8-pin DIP, SO-8, MSOP-8, SSOP-16, and SO-16, catering to different design needs.
Applications
- Medical Devices: The INA126P is used in ECG monitors, blood pressure monitors, and other medical instrumentation due to its high precision and low power consumption.
- Industrial Automation: It is utilized in process control systems, data acquisition systems, and industrial instrumentation for accurate signal amplification.
- Physiological Signal Amplification: The INA126P is recognized for amplifying physiological signals such as ECG, EEG, and EMG, providing essential diagnostic insights in healthcare.
- Multi-Channel Data Acquisition Systems: It facilitates the synchronized capture of multiple signals, making it a preferred choice for systems requiring simultaneous data acquisition from diverse sensors.
- Portable and Battery-Operated Systems: Its minimal power draw makes it suitable for portable monitoring devices and field instrumentation, enhancing operational duration and reducing the need for frequent battery changes.
Q & A
- What is the quiescent current of the INA126P?
The INA126P has a quiescent current of 175µA per channel.
- What is the operating temperature range of the INA126P?
The INA126P operates within a temperature range of –40°C to +85°C.
- What are the package options available for the INA126P?
The INA126P is available in packages such as 8-pin DIP, SO-8, MSOP-8, SSOP-16, and SO-16.
- How can the gain of the INA126P be adjusted?
The gain of the INA126P can be adjusted from 5V/V to 10,000V/V using a single external resistor.
- What is the common mode rejection ratio (CMRR) of the INA126P?
The CMRR of the INA126P is 83 dB.
- What is the power supply rejection ratio (PSRR) of the INA126P?
The PSRR of the INA126P is 106 dB.
- What are some typical applications of the INA126P?
The INA126P is used in medical devices, industrial automation, physiological signal amplification, multi-channel data acquisition systems, and portable battery-operated systems.
- Does the INA126P have integrated EMI filtering?
Yes, the INA126P features integrated electromagnetic interference (EMI) filtering.
- What is the slew rate of the INA126P?
The slew rate of the INA126P is 0.4 V/μs.
- What is the maximum output current per channel of the INA126P?
The maximum output current per channel of the INA126P is 10 mA.
