Overview
The OPA4991QDRQ1 is a high-performance, quad-channel operational amplifier (op-amp) produced by Texas Instruments. Designed for industrial and automotive applications, this op-amp offers exceptional DC precision and AC performance, making it suitable for a wide range of high-voltage and high-precision applications. Its key features include rail-to-rail input/output, low noise, and high output current, making it a robust choice for demanding environments. The OPA4991QDRQ1 is particularly well-suited for use in data acquisition systems, test and measurement equipment, and other applications requiring high reliability and precision.
Key Specifications
| Parameter | Value | Unit | Notes |
|---|---|---|---|
| Number of Channels | 4 | ||
| Supply Voltage Range | ±1.35V to ±20V, 2.7V to 40V | V | |
| Bandwidth | 4.5 | MHz | |
| Slew Rate | 21 | V/µs | |
| Input Offset Voltage | ±125 | µV | Typical |
| Input Offset Voltage Drift | ±0.3 | µV/°C | Typical |
| Noise Density | 10.5 | nV/√Hz | At 1 kHz |
| Output Current | ±75 | mA | |
| Operating Temperature Range | -40 to +125 | °C | |
| Package | TSSOP-14 |
Key Features
- Rail-to-rail input and output for maximum dynamic range.
- Low input offset voltage and drift for high DC precision.
- Low noise and high bandwidth for superior AC performance.
- High output current capability for driving capacitive loads.
- Wide supply voltage range for versatile applications.
- Robust EMI/RFI filtering for enhanced reliability in noisy environments.
Applications
The OPA4991QDRQ1 is widely used in industrial and automotive applications, including data acquisition systems, test and measurement equipment, and programmable logic controllers. Its high precision and reliability make it ideal for use in low-power audio preamplifiers, ADC driver amplifiers, and high-side/low-side current sensing circuits. Additionally, its robust performance in high-voltage environments makes it suitable for use in industrial automation and control systems.
Q & A
1. What is the supply voltage range of the OPA4991QDRQ1?
The supply voltage range is ±1.35V to ±20V, or 2.7V to 40V.
2. What is the typical input offset voltage?
The typical input offset voltage is ±125µV.
3. What is the bandwidth of the OPA4991QDRQ1?
The bandwidth is 4.5 MHz.
4. Can the OPA4991QDRQ1 drive capacitive loads?
Yes, it can drive capacitive loads up to 1nF.
5. What is the operating temperature range?
The operating temperature range is -40°C to +125°C.
6. Is the OPA4991QDRQ1 suitable for automotive applications?
Yes, it is designed for both industrial and automotive applications.
7. What is the typical noise density of the OPA4991QDRQ1?
The typical noise density is 10.5nV/√Hz at 1 kHz.
8. Does the OPA4991QDRQ1 support rail-to-rail operation?
Yes, it supports rail-to-rail input and output.
9. What is the slew rate of the OPA4991QDRQ1?
The slew rate is 21V/µs.
10. What package does the OPA4991QDRQ1 come in?
It comes in a TSSOP-14 package.
