Overview
The OPA2991-Q1 is a high-voltage, dual-channel operational amplifier designed by Texas Instruments for automotive applications. It is part of the OPAx991-Q1 family, which includes single, dual, and quad-channel variants. This device is optimized for AEC-Q100 grade 1 applications, ensuring high reliability and performance in harsh automotive environments. The OPA2991-Q1 offers exceptional DC precision and AC performance, making it suitable for a wide range of automotive systems.
Key Specifications
| Parameter | Test Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Input Offset Voltage (VOS) | VCM = V–, TA = –40°C to 125°C | ±125 | ±895 | ±925 | µV |
| Input Offset Voltage Drift (dVOS/dT) | TA = –40°C to 125°C | ±0.3 | µV/°C | ||
| Power Supply Rejection Ratio (PSRR) | VCM = V–, VS = 4 V to 40 V | ±0.3 | ±1 | ±5 | µV/V |
| Quiescent Current per Amplifier (IQ) | VCM = V–, IO = 0 A | 560 | 685 | 750 | µA |
| Bandwidth | 4.5 | MHz | |||
| Slew Rate | 21 | V/µs | |||
| Output Current | ±75 | mA | |||
| Operating Temperature Range | –40 | 125 | °C | ||
| Package Types | VSSOP, TSSOP, SOIC |
Key Features
- High voltage operation: Up to 40V differential swing and rail-to-rail input or output.
- Exceptional DC precision: Low input offset voltage (±125µV typical) and low offset drift (±0.3µV/°C typical).
- High AC performance: 4.5MHz bandwidth, high slew rate (21V/µs), and low noise (10.8nV/√Hz and 1.8µVPP).
- High output current: ±75mA and high capacitive load drive (1nF).
- Shutdown feature: Low quiescent current during shutdown (30µA typical) and high output impedance during shutdown (320MΩ || 2pF).
- Compact packaging: Available in VSSOP, TSSOP, and SOIC packages.
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 maximum differential swing of the OPA2991-Q1?
The OPA2991-Q1 can tolerate a maximum differential swing of up to 40V.
- What are the typical input offset voltage and drift for the OPA2991-Q1?
The typical input offset voltage is ±125µV, and the typical offset drift is ±0.3µV/°C.
- What is the bandwidth of the OPA2991-Q1?
The bandwidth of the OPA2991-Q1 is 4.5MHz.
- What are the package options available for the OPA2991-Q1?
The OPA2991-Q1 is available in VSSOP, TSSOP, and SOIC packages.
- What is the operating temperature range of the OPA2991-Q1?
The operating temperature range is from –40°C to 125°C.
- Does the OPA2991-Q1 have a shutdown feature?
- What are some typical applications of the OPA2991-Q1 in automotive systems?
Typical applications include infotainment and cluster systems, passive safety, body electronics, HEV/EV inverter and motor control, and advanced driver assistance systems (ADAS).
- What is the slew rate of the OPA2991-Q1?
The slew rate of the OPA2991-Q1 is 21V/µs.
- How much output current can the OPA2991-Q1 provide?
The OPA2991-Q1 can provide up to ±75mA of output current.
- What is the noise performance of the OPA2991-Q1?
The noise performance includes 10.8nV/√Hz and 1.8µVPP.
