Overview
The OPA191IDBVR is a high-performance, low-power operational amplifier from Texas Instruments. It is part of the OPAx191 family, which includes the OPA191, OPA2191, and OPA4191. This device is known for its outstanding DC precision and AC performance, making it suitable for a wide range of high-voltage industrial applications. The OPA191IDBVR features e-trim™ technology, which ensures precise internal device parameters, and it operates with a rail-to-rail input/output configuration. This amplifier is available in a SOT-23 package and is specified to operate over a temperature range of –40°C to +125°C.
Key Specifications
| Parameter | Typical | Minimum | Maximum | Unit |
|---|---|---|---|---|
| Total Supply Voltage | 8 to 36 | 4.5 | 36 | V |
| Input Offset Voltage | ±5 µV | ±10 µV | ±125 µV | µV |
| Input Offset Voltage Drift | ±0.15 µV/°C | ±0.1 µV/°C | ±1.2 µV/°C | µV/°C |
| Unity Gain Bandwidth | 2.5 MHz | - | - | MHz |
| Slew Rate | 5.5 V/µs | - | - | V/µs |
| Output Current | ±65 mA | - | - | mA |
| Common-Mode Rejection Ratio (CMRR) | 140 dB | 120 dB | - | dB |
| Input Bias Current | 20 pA | - | - | pA |
| Quiescent Current per Channel | 0.14 mA | - | 0.2 mA | mA |
| Operating Temperature Range | -40°C to +125°C | -40°C | +125°C | °C |
| Package Type | SOT-23 | - | - | - |
Key Features
- Rail-to-Rail Input/Output: The OPA191IDBVR offers rail-to-rail input and output capabilities, ensuring maximum signal range.
- Low Offset Voltage and Drift: With a typical input offset voltage of ±5 µV and a drift of ±0.15 µV/°C, this amplifier provides high DC precision.
- High Output Current and Capacitive Load Drive: It can drive high capacitive loads up to 1 nF and deliver an output current of ±65 mA.
- High Slew Rate: A slew rate of 5.5 V/µs ensures fast response times.
- EMI Hardened: The device is designed to be resilient against electromagnetic interference.
- Low Power Consumption: With a typical quiescent current per channel of 0.14 mA, it is energy-efficient.
Applications
- Data Acquisition (DAQ): Suitable for precision data acquisition systems.
- Source Measurement Units (SMU): Ideal for source measurement applications.
- Pressure Transmitters: Used in industrial pressure measurement systems.
- Train Control and Management Systems: Applied in railway control and management systems.
- Lab and Field Instrumentation: Utilized in various laboratory and field instrumentation applications.
Q & A
- What is the typical input offset voltage of the OPA191IDBVR?
The typical input offset voltage is ±5 µV. - What is the maximum output current of the OPA191IDBVR?
The maximum output current is ±65 mA. - What is the unity gain bandwidth of the OPA191IDBVR?
The unity gain bandwidth is 2.5 MHz. - What is the slew rate of the OPA191IDBVR?
The slew rate is 5.5 V/µs. - What is the operating temperature range of the OPA191IDBVR?
The operating temperature range is –40°C to +125°C. - What package type is the OPA191IDBVR available in?
The OPA191IDBVR is available in a SOT-23 package. - Is the OPA191IDBVR EMI hardened?
Yes, the OPA191IDBVR is EMI hardened. - What is the common-mode rejection ratio (CMRR) of the OPA191IDBVR?
The typical CMRR is 140 dB. - What is the input bias current of the OPA191IDBVR?
The input bias current is 20 pA. - What is the quiescent current per channel of the OPA191IDBVR?
The typical quiescent current per channel is 0.14 mA.
