Overview
The INA321EA/2K5 is a precision, low-power, rail-to-rail output instrumentation amplifier produced by Texas Instruments. This product is designed for applications requiring high accuracy and low power consumption, making it ideal for portable and battery-powered devices. The INA321EA/2K5 is part of Texas Instruments' extensive portfolio of analog ICs, targeting industries such as medical instrumentation, industrial automation, and consumer electronics. Its unique selling points include its low quiescent current, wide supply voltage range, and excellent DC precision, which make it a competitive choice for precision signal conditioning tasks.
Key Specifications
| Parameter | Value | Unit | Notes |
|---|---|---|---|
| Supply Voltage Range | 2.7 to 5.5 | V | |
| Quiescent Current | 60 | µA | |
| Gain Bandwidth Product | 350 | kHz | |
| Input Offset Voltage | 250 | µV | Max |
| Input Bias Current | 0.5 | nA | Max |
| Common-Mode Rejection Ratio (CMRR) | 100 | dB | Min |
| Operating Temperature Range | -40 to +125 | °C | |
| Package | SOT-23-5 |
Key Features
- Low quiescent current of 60 µA for power-sensitive applications.
- Rail-to-rail output swing for maximum dynamic range.
- Wide supply voltage range (2.7 V to 5.5 V) for versatile use.
- High CMRR of 100 dB minimizes common-mode interference.
- Small SOT-23-5 package for space-constrained designs.
Applications
The INA321EA/2K5 is widely used in various precision signal conditioning applications. In medical instrumentation, it is employed in portable devices such as blood glucose meters and ECG monitors due to its low power consumption and high accuracy. In industrial automation, it is utilized for sensor signal amplification in pressure, temperature, and strain gauge systems. Additionally, its compact size and low power make it suitable for consumer electronics, including wearable devices and IoT sensors.
Q & A
1. What is the supply voltage range of the INA321EA/2K5?
The supply voltage range is 2.7 V to 5.5 V.
2. What is the quiescent current of this amplifier?
The quiescent current is 60 µA.
3. What is the typical gain bandwidth product?
The gain bandwidth product is 350 kHz.
4. What is the maximum input offset voltage?
The maximum input offset voltage is 250 µV.
5. What is the input bias current?
The input bias current is 0.5 nA (max).
6. What is the CMRR of the INA321EA/2K5?
The CMRR is 100 dB (min).
7. What is the operating temperature range?
The operating temperature range is -40°C to +125°C.
8. What package does the INA321EA/2K5 come in?
It comes in an SOT-23-5 package.
9. Is this amplifier suitable for battery-powered devices?
Yes, its low quiescent current and wide supply voltage range make it ideal for battery-powered devices.
10. What are the typical applications of the INA321EA/2K5?
Typical applications include medical instrumentation, industrial automation, and consumer electronics.
