Overview
The OPA991QDBVRQ1 is a high-performance, automotive-grade operational amplifier designed by Texas Instruments. It is part of the OPAx991-Q1 family, which includes the OPA991-Q1, OPA2991-Q1, and OPA4991-Q1. This single-channel op-amp is optimized for automotive applications, offering exceptional DC precision and AC performance. It is housed in a compact SOT-23 (DBV) package, making it suitable for space-constrained applications. The device operates from a single 40-V supply rail and is AEC-Q100 qualified, ensuring reliability and robustness in high-voltage automotive environments.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package | SOT-23 (DBV) | - |
| Pins | 5 | - |
| Operating Temperature Range | -40 to 125 | °C |
| Supply Voltage Range | ±1.35V to ±20V, 2.7V to 40V | V |
| Offset Voltage | ±125µV | µV |
| Offset Voltage Drift | ±0.3µV/°C | µV/°C |
| Noise | 10.8nV/√Hz at 1kHz | nV/√Hz |
| Common-Mode Rejection Ratio | 130dB | dB |
| Bias Current | ±10pA | pA |
| Bandwidth | 4.5MHz | MHz |
| Slew Rate | 21V/µs | V/µs |
| Capacitive Load Drive | 1nF | nF |
| Quiescent Current per Amplifier | 560µA | µA |
Key Features
- AEC-Q100 qualified for automotive applications with a temperature grade 1: –40°C to +125°C.
- Low offset voltage: ±125µV and low offset voltage drift: ±0.3µV/°C.
- Low noise: 10.8nV/√Hz at 1kHz and high common-mode rejection ratio: 130dB.
- Rail-to-rail input and output, and high slew rate: 21V/µs.
- High capacitive load drive: 1nF and low quiescent current: 560µA per amplifier.
- MUX-friendly/comparator inputs and the ability to operate with differential inputs up to the supply rail.
- High output current (±75mA) and robust EMIRR performance.
Applications
- Infotainment and cluster systems
- Passive safety systems
- Body electronics and lighting
- HEV/EV inverter and motor control
- On-board (OBC) and wireless chargers
- Powertrain current sensors
- Advanced driver assistance systems (ADAS)
- High-side current sensing
Q & A
- What is the operating temperature range of the OPA991QDBVRQ1?
The operating temperature range is –40°C to +125°C.
- What is the supply voltage range for the OPA991QDBVRQ1?
The supply voltage range is ±1.35V to ±20V, and 2.7V to 40V.
- What is the typical offset voltage of the OPA991QDBVRQ1?
The typical offset voltage is ±125µV.
- What is the bandwidth of the OPA991QDBVRQ1?
The bandwidth is 4.5MHz.
- Is the OPA991QDBVRQ1 AEC-Q100 qualified?
Yes, it is AEC-Q100 qualified for automotive applications.
- What is the slew rate of the OPA991QDBVRQ1?
The slew rate is 21V/µs.
- Can the OPA991QDBVRQ1 drive high capacitive loads?
Yes, it can drive up to 1nF capacitive loads.
- What is the quiescent current per amplifier for the OPA991QDBVRQ1?
The quiescent current per amplifier is 560µA.
- In what package is the OPA991QDBVRQ1 available?
The OPA991QDBVRQ1 is available in a SOT-23 (DBV) package with 5 pins.
- What are some typical applications for the OPA991QDBVRQ1?
Typical applications include infotainment and cluster systems, passive safety systems, body electronics, HEV/EV inverter and motor control, and more.
