Overview
The OPA211AIDGKR is a precision operational amplifier from Texas Instruments, part of the OPAx211 series. This amplifier is distinguished by its extremely low noise density of 1.1 nV/√Hz at 1 kHz and a low supply current of only 3.6 mA per channel. It offers rail-to-rail output swing, which maximizes dynamic range, and is suitable for a variety of high-precision applications. The OPA211AIDGKR is available in an 8-pin VSSOP package and operates over a wide temperature range of -40°C to 125°C.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Noise Density | 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 | 80 MHz (G = 100), 45 MHz (G = 1) | 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 | 8-pin VSSOP | |
| Operating Temperature Range | -40 to 125 | °C |
Key Features
- Low voltage noise: 1.1 nV/√Hz at 1 kHz
- Input voltage noise: 80 nVPP (0.1 to 10 Hz)
- High THD + N performance: -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: 80 MHz (G = 100), 45 MHz (G = 1)
- 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
- Loop filter amplifiers in PLL applications
- Precision data acquisition (DAQ)
- Driving high-precision 16-bit analog-to-digital converters (ADCs)
- Buffering the output of high-resolution digital-to-analog converters (DACs)
- Ultrasound scanners
- Semiconductor test equipment
- X-ray systems
- Lab and field instrumentation
- Radar systems
- Wireless communications test equipment
- Seismic data acquisition
- DC power supplies, AC sources, and electronic loads
- Power analyzers and source measurement units (SMUs)
Q & A
- What is the noise density of the OPA211AIDGKR?
The noise density of the OPA211AIDGKR is 1.1 nV/√Hz at 1 kHz.
- What is the typical supply current of the OPA211AIDGKR?
The typical supply current is 3.6 mA per channel.
- What is the gain bandwidth product of the OPA211AIDGKR?
The gain bandwidth product is 80 MHz (G = 100) and 45 MHz (G = 1).
- What is the slew rate of the OPA211AIDGKR?
The slew rate is 27 V/µs.
- What is the settling time to 16-bit accuracy for the OPA211AIDGKR?
The settling time is 700 ns.
- What is the output current capability of the OPA211AIDGKR?
The output current is up to 30 mA.
- What are the available package options for the OPA211AIDGKR?
The OPA211AIDGKR is available in an 8-pin VSSOP package, as well as SON-8 and SOIC-8 packages.
- What is the operating temperature range of the OPA211AIDGKR?
The operating temperature range is -40°C to 125°C.
- What are some common applications for the OPA211AIDGKR?
Common applications include loop filter amplifiers in PLL applications, precision data acquisition, driving high-precision ADCs and DACs, and various test and measurement equipment.
- Does the OPA211AIDGKR support rail-to-rail output swing?
- What is the typical offset voltage of the OPA211AIDGKR?
The typical offset voltage is 125 µV.
