Overview
The OPA4991IRUCR is a high-performance operational amplifier designed by Texas Instruments. This device is part of the OPAx991 family, known for its exceptional DC precision and AC performance. It is particularly suited for precision applications in medical and industrial fields due to its low offset voltage, low noise, and high bandwidth. The amplifier operates with a wide supply voltage range and features rail-to-rail input and output, making it versatile for various design needs.
Key Specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package/Case | X2QFN (RUC)-14 |
| Number of Channels | 4 Channel |
| Supply Voltage - Min | 2.7 V |
| Supply Voltage - Max | 40 V |
| GBP - Gain Bandwidth Product | 4.5 MHz |
| SR - Slew Rate | 21 V/µs |
| Vos - Input Offset Voltage | ±125 µV |
| Minimum Operating Temperature | -40°C |
| Maximum Operating Temperature | +125°C |
| Ib - Input Bias Current | ±10 pA |
| CMRR - Common Mode Rejection Ratio | 130 dB |
| en - Input Voltage Noise Density | 10.8 nV/√Hz at 1 kHz |
| Operating Supply Current | 560 µA per amplifier |
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
- Robust EMIRR performance: EMI/RFI filters on input and supply pins
Applications
The OPA4991IRUCR is ideal for various industrial and medical applications where high precision and performance are required. It is suitable for use in precision voltage regulation, high-speed data transmission, and other applications that demand low noise and high bandwidth. The device's ability to operate over a wide temperature range and its robust EMIRR performance make it a reliable choice for demanding environments.
Q & A
- What is the OPA4991IRUCR used for?
The OPA4991IRUCR is a high-performance operational amplifier used in precision applications, particularly in medical and industrial fields. - What is the supply voltage range of the OPA4991IRUCR?
The supply voltage range is from 2.7 V to 40 V. - What is the gain bandwidth product (GBP) of the OPA4991IRUCR?
The GBP is 4.5 MHz. - What is the slew rate of the OPA4991IRUCR?
The slew rate is 21 V/µs. - What is the input offset voltage of the OPA4991IRUCR?
The input offset voltage is ±125 µV. - Can the OPA4991IRUCR be used as a comparator?
Yes, the amplifier can be used in open-loop or as a comparator. - What is the common-mode rejection ratio (CMRR) of the OPA4991IRUCR?
The CMRR is 130 dB. - What is the operating supply current per amplifier?
The operating supply current is 560 µA per amplifier. - Is the OPA4991IRUCR suitable for high capacitive loads?
Yes, it can drive high capacitive loads up to 1 nF. - Does the OPA4991IRUCR have EMI/RFI protection?
Yes, it has robust EMIRR performance with EMI/RFI filters on input and supply pins.
