Overview
The OPA4991QPWRQ1 is a high-performance, quad-channel operational amplifier (op-amp) manufactured by Texas Instruments. Designed specifically for automotive applications, this op-amp offers exceptional DC precision and AC performance, making it a reliable choice for high-voltage environments. Its key features include rail-to-rail input/output, low offset voltage, and high output current, which ensure robust performance in demanding conditions. The OPA4991QPWRQ1 is ideal for automotive systems, industrial controls, and other applications requiring precision and stability.
Key Specifications
| Parameter | Value | Unit | Notes |
|---|---|---|---|
| Channels | 4 | Quad-channel | |
| Supply Voltage (Max) | 40 | V | |
| Gain Bandwidth Product (GBP) | 4.5 | MHz | |
| Slew Rate (SR) | 21 | V/µs | |
| Input Offset Voltage (Vos) | 125 | µV | Typical |
| Input Bias Current (Ib) | 10 | pA | |
| Quiescent Current | 560 | µA | Per channel |
| Common Mode Rejection Ratio (CMRR) | 130 | dB | |
| Input Voltage Noise Density (en) | 10.8 | nV/√Hz | |
| Operating Temperature Range | -40 to +125 | °C |
Key Features
- Rail-to-rail input and output for maximum dynamic range.
- Low offset voltage and low drift ensure high DC precision.
- High output current (±75mA) for driving heavy loads.
- High slew rate (21V/µs) for fast signal response.
- Stable operation with capacitive loads up to 1nF.
- Designed for automotive applications, ensuring reliability in harsh environments.
Applications
The OPA4991QPWRQ1 is widely used in automotive systems, including battery management, motor control, and sensor signal conditioning. Its high voltage capability and precision make it suitable for industrial applications such as power supplies, test and measurement equipment, and process control systems. Additionally, it is used in audio amplifiers, data acquisition systems, and other applications requiring high-performance op-amps.
Q & A
1. What is the supply voltage range for the OPA4991QPWRQ1?
The supply voltage range is from 2.7V to 40V.
2. Is the OPA4991QPWRQ1 suitable for automotive applications?
Yes, it is specifically designed for automotive applications, ensuring reliability in high-voltage and harsh environments.
3. What is the gain bandwidth product of this op-amp?
The gain bandwidth product is 4.5MHz.
4. Can the OPA4991QPWRQ1 drive capacitive loads?
Yes, it can drive capacitive loads up to 1nF without instability.
5. What is the typical input offset voltage?
The typical input offset voltage is ±125µV.
6. Does this op-amp support rail-to-rail operation?
Yes, it supports rail-to-rail input and output operation.
7. What is the maximum output current?
The maximum output current is ±75mA.
8. What is the operating temperature range?
The operating temperature range is -40°C to +125°C.
9. Is the OPA4991QPWRQ1 available in surface-mount packaging?
Yes, it is available in a TSSOP-14 surface-mount package.
10. What is the quiescent current per channel?
The quiescent current per channel is 560µA.
