Overview
The OPA211ID, produced by Texas Instruments, is a precision operational amplifier known for its exceptional low noise and high performance. This device is part of the OPAx211 series, which offers very low voltage noise of 1.1 nV/√Hz at 1 kHz and a supply current of only 3.6 mA per channel. The OPA211ID is designed to provide rail-to-rail output swing, maximizing dynamic range, and is suitable for a wide range of applications requiring high precision and low noise.
Key Specifications
| Parameter | Typical Value | Unit |
|---|---|---|
| Input Voltage Noise Density | 1.1 | nV/√Hz at 1 kHz |
| Input Voltage Noise (0.1 to 10 Hz) | 80 | nVPP |
| Offset Voltage | 125 | μV (maximum) |
| Offset Voltage Drift | 0.35 | μV/°C (typical) |
| Supply Current | 3.6 | mA/Ch (typical) |
| Gain Bandwidth Product | 45 MHz (G = 1), 80 MHz (G = 100) | MHz |
| Slew Rate | 27 | V/μs |
| Settling Time (16-bit accuracy) | 700 ns | ns |
| Supply Range | ±2.25 to ±18 V, 4.5 V to 36 V | V |
| Output Current | 30 | mA |
| Package Options | SON-8, VSSOP-8, SOIC-8 |
Key Features
- Low voltage noise: 1.1 nV/√Hz at 1 kHz
- High precision with low offset voltage (125 μV maximum) and low offset voltage drift (0.35 μV/°C typical)
- Low supply current: 3.6 mA per channel (typical)
- Unity-gain stable with high gain bandwidth product (45 MHz at G = 1, 80 MHz at G = 100)
- High slew rate: 27 V/μs
- Fast settling time: 700 ns to 16-bit accuracy
- Rail-to-rail output swing
- Wide supply range: ±2.25 to ±18 V, 4.5 V to 36 V
- Shutdown function with low shutdown current
Applications
- Ultrasound scanners
- Semiconductor test equipment
- X-ray systems
- Lab and field instrumentation
- Data acquisition (DAQ) systems
- Radar systems
- Wireless communications test equipment
- Seismic data acquisition
- DC power supplies, AC sources, electronic loads
- Power analyzers and source measurement units (SMUs)
Q & A
- What is the input voltage noise density of the OPA211ID?
The input voltage noise density of the OPA211ID is 1.1 nV/√Hz at 1 kHz.
- What is the typical supply current of the OPA211ID?
The typical supply current of the OPA211ID is 3.6 mA per channel.
- What are the package options available for the OPA211ID?
The OPA211ID is available in SON-8, VSSOP-8, and SOIC-8 packages.
- What is the gain bandwidth product of the OPA211ID?
The gain bandwidth product of the OPA211ID is 45 MHz at a gain of 1 and 80 MHz at a gain of 100.
- What is the slew rate of the OPA211ID?
The slew rate of the OPA211ID is 27 V/μs.
- What is the settling time of the OPA211ID to 16-bit accuracy?
The settling time of the OPA211ID to 16-bit accuracy is 700 ns.
- What is the output current capability of the OPA211ID?
The output current capability of the OPA211ID is 30 mA.
- Does the OPA211ID have a shutdown function?
- What are some common applications of the OPA211ID?
The OPA211ID is commonly used in ultrasound scanners, semiconductor test equipment, X-ray systems, lab and field instrumentation, and more.
- What is the operating temperature range of the OPA211ID?
The operating temperature range of the OPA211ID is from –40°C to +125°C.
