Overview
The OPA379AIDCKR is a precision operational amplifier (op-amp) produced by Texas Instruments. This model is part of the OPAx379 series, known for its low offset voltage, low noise, and high precision. It is designed for applications requiring high accuracy and stability, such as industrial control systems, medical instrumentation, and test and measurement equipment. The OPA379AIDCKR is packaged in a small SC-70 (DCK) package, making it suitable for space-constrained applications. Its unique selling points include ultra-low offset voltage, low quiescent current, and wide supply voltage range, making it a competitive choice for precision analog designs.
Key Specifications
| Parameter | Value | Unit | Notes |
|---|---|---|---|
| Supply Voltage Range | 1.8 to 5.5 | V | |
| Input Offset Voltage | ±10 | µV | Max |
| Quiescent Current | 17 | µA | Typical |
| Gain Bandwidth Product | 1 | MHz | |
| Slew Rate | 0.6 | V/µs | |
| Operating Temperature Range | -40 to 125 | °C | |
| Package | SC-70 (DCK) | 5-pin | |
| Common Mode Rejection Ratio (CMRR) | 120 | dB | Typical |
| Power Supply Rejection Ratio (PSRR) | 120 | dB | Typical |
| Input Bias Current | ±0.1 | pA | Typical |
Key Features
- Ultra-low offset voltage (±10 µV max) for high precision.
- Low quiescent current (17 µA typical) for power-sensitive applications.
- Wide supply voltage range (1.8 V to 5.5 V) for versatility.
- High CMRR and PSRR (120 dB typical) for noise immunity.
- Small SC-70 package for space-constrained designs.
- Low input bias current (±0.1 pA typical) for high-impedance applications.
Applications
The OPA379AIDCKR is ideal for a wide range of precision applications, including:
- Industrial Control Systems: Used in sensor signal conditioning and process control due to its high accuracy and stability.
- Medical Instrumentation: Suitable for low-power, high-precision medical devices such as patient monitors and diagnostic equipment.
- Test and Measurement Equipment: Ensures accurate signal amplification in multimeters, oscilloscopes, and data acquisition systems.
- Portable Electronics: Its low quiescent current and small package make it ideal for battery-powered devices.
Q & A
1. What is the input offset voltage of the OPA379AIDCKR?
The input offset voltage is ±10 µV maximum.
2. What is the typical quiescent current of this op-amp?
The typical quiescent current is 17 µA.
3. What is the operating voltage range of the OPA379AIDCKR?
It operates from 1.8 V to 5.5 V.
4. What package does the OPA379AIDCKR come in?
It is available in a 5-pin SC-70 (DCK) package.
5. What is the gain bandwidth product of this op-amp?
The gain bandwidth product is 1 MHz.
6. Is the OPA379AIDCKR suitable for low-power applications?
Yes, its low quiescent current makes it ideal for low-power designs.
7. What is the typical CMRR of this op-amp?
The typical common mode rejection ratio (CMRR) is 120 dB.
8. Can this op-amp operate in harsh environments?
Yes, it has an operating temperature range of -40°C to 125°C.
9. What is the typical input bias current of the OPA379AIDCKR?
The typical input bias current is ±0.1 pA.
10. What are the key applications of this op-amp?
It is used in industrial control systems, medical instrumentation, test and measurement equipment, and portable electronics.
