Overview
The OPA991IDBVR, produced by Texas Instruments, is a high-performance operational amplifier that belongs to the OPAx991 family. This device is known for its exceptional DC precision and AC performance, making it suitable for a wide range of high-voltage industrial applications. The OPA991IDBVR features rail-to-rail input and output, low offset voltage, low noise, and high common-mode rejection, among other key characteristics. It is available in a compact SOT-23 (DBV) package with 5 pins and operates over a temperature range of -40°C to 125°C.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Offset Voltage | ±125 µV | - |
| Offset Voltage Drift | ±0.3 µV/°C | - |
| Noise | 10.8 nV/√Hz at 1 kHz | - |
| Common-Mode Rejection | 130 dB | - |
| Bias Current | ±10 pA | - |
| Bandwidth | 4.5 MHz GBW | - |
| Slew Rate | 21 V/µs | - |
| Capacitive Load Drive | 1 nF | - |
| Quiescent Current | 560 µA per amplifier | - |
| Supply Voltage Range | ±1.35 V to ±20 V, 2.7 V to 40 V | - |
| Operating Temperature Range | -40°C to 125°C | - |
Key Features
- Low offset voltage: ±125 µV
- Low offset voltage drift: ±0.3 µV/°C
- Low noise: 10.8 nV/√Hz at 1 kHz
- High common-mode rejection: 130 dB
- Low bias current: ±10 pA
- Rail-to-rail input and output
- Wide bandwidth: 4.5 MHz GBW
- High slew rate: 21 V/µs
- High capacitive load drive: 1 nF
- MUX-friendly/comparator inputs
- Amplifier operates with differential inputs up to supply rail
- Amplifier can be used in open-loop or as comparator
- Low quiescent current: 560 µA per amplifier
- Wide supply voltage range: ±1.35 V to ±20 V, 2.7 V to 40 V
Applications
- Low-power audio preamplifiers
- Multiplexed data-acquisition systems
- Test and measurement equipment
- ADC driver amplifiers
- SAR ADC reference buffers
- Programmable logic controllers
- High-side and low-side current sensing
Q & A
- What is the maximum differential swing the OPA991IDBVR can tolerate?
The OPA991IDBVR can tolerate a maximum differential swing of up to 40 V.
- What is the typical offset voltage of the OPA991IDBVR?
The typical offset voltage is ±125 µV.
- What is the common-mode rejection ratio (CMRR) of the OPA991IDBVR?
The CMRR is 130 dB.
- What is the bandwidth of the OPA991IDBVR?
The bandwidth is 4.5 MHz GBW.
- What is the slew rate of the OPA991IDBVR?
The slew rate is 21 V/µs.
- Can the OPA991IDBVR drive high capacitive loads?
- What is the quiescent current of the OPA991IDBVR?
The quiescent current is 560 µA per amplifier.
- What is the operating temperature range of the OPA991IDBVR?
The operating temperature range is -40°C to 125°C.
- In what package is the OPA991IDBVR available?
The OPA991IDBVR is available in a SOT-23 (DBV) package with 5 pins.
- Can the OPA991IDBVR be used as a comparator?
