Overview
The OPA211AIDGKT is a precision operational amplifier from Texas Instruments, part of the OPAx211 series. This device is renowned for its extremely low voltage noise of 1.1 nV/√Hz at 1 kHz and low supply current of 3.6 mA per channel. It features rail-to-rail output swing, which maximizes dynamic range, making it an excellent choice for various high-precision applications. The OPA211AIDGKT is available in small packages such as SON-8, VSSOP-8, and SOIC-8, and is specified over a wide dual-power supply range of ±2.25 to ±18 V or single-supply operation from 4.5 to 36 V.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Voltage Noise | 1.1 | nV/√Hz at 1 kHz |
| Input Voltage Noise (0.1 to 10 Hz) | 80 | nVPP |
| THD + N | –136 | dB (G = 1, ƒ = 1 kHz) |
| 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 |
| Supply Range | ±2.25 to ±18 V, 4.5 V to 36 V | V |
| Output Current | 30 | mA |
| Operating Temperature Range | –40 to 125 | °C |
| Package Types | SON-8, VSSOP-8, SOIC-8 |
Key Features
- Low voltage noise: 1.1 nV/√Hz at 1 kHz
- Input voltage noise: 80 nVPP (0.1 to 10 Hz)
- High total harmonic distortion plus noise (THD + N): –136 dB (G = 1, ƒ = 1 kHz)
- Low offset voltage: 125 μV (maximum)
- Low offset voltage drift: 0.35 μV/°C (typical)
- Low supply current: 3.6 mA/Ch (typical)
- Unity-gain stable
- High gain bandwidth product: 45 MHz (G = 1), 80 MHz (G = 100)
- High slew rate: 27 V/μs
- Fast settling time: 700 ns to 16-bit accuracy
- Wide supply range: ±2.25 to ±18 V, 4.5 V to 36 V
- Rail-to-rail output swing
- High output current: 30 mA
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
- Source measurement units (SMUs)
- Loop filter amplifiers in PLL applications
- Driving high-precision 16-bit analog-to-digital converters (ADCs) or buffering the output of high-resolution digital-to-analog converters (DACs)
Q & A
- What is the voltage noise of the OPA211AIDGKT?
The OPA211AIDGKT has a voltage noise of 1.1 nV/√Hz at 1 kHz.
- What is the typical supply current of the OPA211AIDGKT?
The typical supply current is 3.6 mA per channel.
- What are the available package types for the OPA211AIDGKT?
The OPA211AIDGKT is available in SON-8, VSSOP-8, and SOIC-8 packages.
- What is the gain bandwidth product of the OPA211AIDGKT?
The gain bandwidth product is 45 MHz (G = 1) and 80 MHz (G = 100).
- What is the slew rate of the OPA211AIDGKT?
The slew rate is 27 V/μs.
- What is the settling time to 16-bit accuracy for the OPA211AIDGKT?
The settling time is 700 ns to 16-bit accuracy.
- What is the output current capability of the OPA211AIDGKT?
The output current capability is 30 mA.
- What are some common applications of the OPA211AIDGKT?
Common applications include ultrasound scanners, semiconductor test equipment, X-ray systems, data acquisition systems, and more.
- What is the operating temperature range of the OPA211AIDGKT?
The operating temperature range is –40°C to 125°C.
- Is the OPA211AIDGKT unity-gain stable?
Yes, the OPA211AIDGKT is unity-gain stable.
